显示标签为“Oracle”的博文。显示所有博文
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2014年10月21日星期二

Le meilleur matériel de formation examen Oracle 1z0-482 1z1-034

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Code d'Examen: 1z0-482
Nom d'Examen: Oracle (Oracle Data Integrator 11g Certified Implementation Essentials)
Questions et réponses: 71 Q&As

Code d'Examen: 1z1-034
Nom d'Examen: Oracle (Upgrade Oracle9i/10g OCA to Oracle Database 11g OCP)
Questions et réponses: 148 Q&As

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NO.1 Which two ODI knowledge modules are included in the Application Adapter for Hadoop?
A. IKM Oracle Incremental Update
B. IKM Hive Transform
C. IKM SQL to File Append
D. IKM FiletoHive
Answer: B,D

Oracle   1z0-482 examen   certification 1z0-482
Reference:http://docs.oracle.com/cd/E27101_01 /doc.10/e27365 /odi.htm

NO.2 Select the three correct options for Token Checking in the EDQ parser.
A. Checking against a list of values.
B. Checking for duplicates.
C. Checking against a list of patterns.
D. Checking for typing errors.
E. Checking against a list of regular expressions.
Answer: A,B,E

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NO.3 Identify three objects from which scenarios can be generated.
A. Interface
B. Variable
C. Package
D. Knowledge modules
E. Trail
F. Extract
Answer: A,B,C

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Reference:http://docs.oracle.com/cd/E23943_01 /integrate.1111 /e12643 /scenarios.htm#BACDFAH
D(see topic 13.2)

NO.4 Do all project developers using ODI need to consolidate their own local metadata repositories?
A. No, ODI uses a centralized relational metadata repository that all the developers share.
B. No, ODI proprietary metadata server allows all developers to share the common metadata of a
specific project.
C. Yes, you have to invoke a dedicated web service to synchronize the metadata using the Oracle
Service Bus.
D. Yes, the local metadata needs to be transmitted via FTP and synchronized with a dedicated
proprietary engine, creating a common metadata model for all developers.
Answer: A

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NO.5 When working with delimited flat files, is it possible to enforce primary key on a flat file using
a CKM?
A. No, it is not possible to enforce constraints on some technologies such as flat files and JMS
queues.
B. No, it is not possible to enforce constraints on any technology.
C. Yes, it is possible also to forward-engineer it to the flat file definition.
D. Yes, but you have to save it as a fixed file.
Answer: A

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NO.6 Select the two correct statements about the Date Profiler.
A. It can profile string dates written in a variety of formats, such as DD/MM/YYYY or MM/DD/YYYY .
B. It provides a distribution for the day in the year, such as February 21, regardless of the year.
C. It allows the EDQ user to define a valid range of dates.
D. By clicking a date in blue, the user can drill down to the records that carried that value.
E. It rejects February 29 as an invalid date.
Answer: A,D

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NO.7 In an ODI interface, to declare a lookup, is there a dedicated graphical object?
A. No, in ODI you can declare a lookup only using a join definition.
B. No, in ODI you can declare a lookup only using an ODI procedure.
C. Yes, there is a specific object, you click it and a wizard helps the developer to set the lookup.
D. Yes, there is a specific object and you need to prepare a configuration file to use it.
Answer: C

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NO.8 You want to add a new CDC subscriber in ODI after you have started the Journal process, what
steps do you need to go through in order to use this new subscriber?
A. Drop Journal, remove existing subscribers, add a new subscriber, start Journal, and edit the
default Journalizing filter in your Interfaces
B. Drop Journal,add anew subscriber, start Journal, and remove the default Journalizing filter in your
Interfaces
C. Drop Journal, add a new subscriber, start Journal, and edit the default Journalizing filter in your
Interfaces
D. Add anew subscriber and edit the default Journalizing filter in your Interfaces
Answer: C

Oracle examen   1z0-482   certification 1z0-482

2014年9月29日星期一

Certification Oracle de téléchargement gratuit pratique d'examen 1z0-100 1z0-062, questions et réponses

1z0-100 est un test de Oracle Certification, donc réussir 1z0-100 est le premier pas à mettre le pied sur la Certifiction Oracle. Ça peut expliquer certiainement pourquoi le test Oracle 1z0-100 devient de plus en plus chaud, et il y a de plus en plus de gens qui veulent participer le test 1z0-100. Au contraire, il n'y a que pas beaucoup de gens qui pourrait réussir ce test. Dans ce cas, si vous vous réfléchissez étudier avec une bonne Q&A?

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Code d'Examen: 1z0-100
Nom d'Examen: Oracle (Oracle Linux 5 and 6 System Administration)
Questions et réponses: 108 Q&As

Code d'Examen: 1z0-062
Nom d'Examen: Oracle (Oracle Database 12c: Installation and Administration)
Questions et réponses: 166 Q&As

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NO.1 Which three factors influence the optimizer's choice of an execution plan?
A. the optimizer_mode initialization parameter
B. operating system (OS) statistics
C. cardinality estimates
D. object statistics in the data dictionary
E. fixed baselines
Answer: A,B

Oracle   certification 1z0-062   1z0-062
Reference: http://docs.oracle.com/cd/B19306_01 /server.102 /b14211 /optimops.htm

NO.2 The hr user receiver, the following error while inserting data into the sales table: ERROR at line
1:
ORA-01653; unable to extend table HR.SALES by 128 in tablespace USERS
On investigation, you find that the users tablespace uses Automnrif Segment Space Management
(ASSM). It is the default tablespace for the HR user with an unlimited quota on it.
Which two methods would you use to resolve this error?
A. Altering the data life associated with the USERS tablespace to ex automatically
B. Adding a data life to the USERS tablespace
C. Changing segment space management for the USERS tablespace to manual
D. Creating a new tablespace with autoextend enabled and changing the default tablespace of the
HR user to the new tablespace
E. Enabling resumable space allocation by setting the RESUMABLE_TIMEOUT parameter to a
nonzero value
Answer: A,D

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NO.3 Which three statements are true about a job chain?
A. It can contain a nested chain of jobs.
B. It can be used to implement dependency-based scheduling.
C. It cannot invoke the same program or nested chain in multiple steps in the chain.
D. It cannot have more than one dependency.
E. It can be executed using event-based or time-based schedules.
Answer: A,B,E

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Reference:
http://docs.oracle.com/cd/B28359_01 /server.111 /b28310/scheduse009.htm#ADMIN12459
12. Which two tasks can be performed on an external table?
A. partitioning the table
B. creating an invisible index
C. updating the table by using an update statement
D. creating a public synonym
E. creating a view
Answer: C,D

Oracle examen   certification 1z0-062   1z0-062 examen   1z0-062 examen
13. A user establishes a connection to a database instance by using an Oracle Net connection.
You want to ensure the following:
1.The user account must be locked after five unsuccessful login attempts.
2.Data read per session must be limited for the user. 3- The user cannot have more than three
simultaneous sessions.
4. The user must have a maximum of 10 minutes session idle time before being logged off
automatically.
How would you accomplish this?
A. by granting a secure application role to the user
B. by implementing Database Resource Manager
C. by using Oracle Label Security options
D. by assigning a profile to the user
Answer: D

Oracle examen   1z0-062 examen   certification 1z0-062   certification 1z0-062
14. Which action takes place when a file checkpoint occurs?
A. The checkpoint position is advanced in the checkpoint queue.
B. All buffers for a checkpointed file that were modified before a specific SCN are written to disk by
DBWn and the SCN is stored in the control file.
C. The Database Writer process (DBWn) writes all dirty buffers in the buffer cache to data files.
D. The Log Writer process (LGWR) writes all redo entries in the log buffer to online redo log files.
Answer: C

Oracle   certification 1z0-062   1z0-062 examen   certification 1z0-062
15. As a user of the ORCL database, you establish a database link to the remote HQ database
such that all users in the ORCL database may access tables only from the SCOTT schema in the HQ
database. SCOTT's password is TIGER. The service mane "HQ" is used to connect to the remote HQ
database.
Which command would you execute to create the database link?
A. CREATE DATABASE LINK HQ USING 'HQ';
B. CREATE DATABASE LINK HQ CONNECT TO CXJRRENT_USER USING HQ' S
C. CREATE PUBLIC DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';
D. CREATE DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';
Answer: B

Oracle examen   1z0-062   1z0-062 examen   1z0-062 examen   1z0-062 examen

NO.4 Which two statements are true about the logical storage structure of an Oracle database?
A. An extent contains data blocks that are always physically contiguous on disk.
B. An extent can span multiple segments,
C. Each data block always corresponds to one operating system block.
D. It is possible to have tablespaces of different block sizes.
E. A data block is the smallest unit of I/O in data files.
Answer: B,D

Oracle examen   1z0-062   certification 1z0-062   certification 1z0-062
Reference: http://docs.oracle.com/cd/E11882_01 /server.112 /e40540/logical.htm#CNCPT250

NO.5 Which statement is true about the Log Writer process?
A. It writes when it receives a signal from the checkpoint process (CKPT).
B. It writes concurrently to all members of multiplexed redo log groups.
C. It writes after the Database Writer process writes dirty buffers to disk.
D. It writes when a user commits a transaction.
Answer: D

Oracle   1z0-062 examen   1z0-062 examen
Reference: http://docs.oracle.com/cd/B19306_01 /server.102 /b14220/process.htm (see log writer
process (LGWR))

NO.6 Examine the parameters for your database instance:
NAMETYPE VALUE
undo_management string AUTO undo_retentioninteger 12 00 undo_tablespace string UNDOTBS1
You execute the following command:
SQL> ALTER TABLESPACE undotbs1 RETENTION NOGUARANTEE;
Which statement is true in this scenario?
A. Undo data is written to flashback logs after 1200 seconds.
B. Inactive undo data is retained for 1200 seconds even if subsequent transactions fail due to lack of
space in the undo tablespace.
C. You can perform a Flashback Database operation only within the duration of 1200 seconds.
D. An attempt is made to keep inactive undo for 1200 seconds but transactions may overwrite the
undo before that time has elapsed.
Answer: A

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NO.7 Which two statements correctly describe the relationship between data files and logical
database structures?
A. A segment cannot span data files.
B. A data file can belong to only one tablespace.
C. An extent cannot span data files.
D. The size of an Oracle data block in a data file should be the same as the size of an OS block.
Answer: B,C

Oracle   certification 1z0-062   1z0-062 examen   1z0-062 examen
Reference: https://mohibalvi.wordpress.com/tag/alter-tablespace/

NO.8 You plan to create a database by using the Database Configuration Assistant (DBCA), with the
following specifications:
-Applications will connect to the database via a middle tier.
-The number of concurrent user connections will be high.
-The database will have mixed workload, with the execution of complex BI queries scheduled at
night.
Which DBCA option must you choose to create the database?
A. a General Purpose database template with default memory allocation
B. a Data Warehouse database template, with the dedicated server mode option and AMM enabled
C. a General Purpose database template, with the shared server mode option and Automatic
Memory Management (AMM) enabled
D. a default database configuration
Answer: C

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Reference:
http://www.oracledistilled.com/oracle-database/administration/creating-a-databaseusing-database
-configuration-assistant/

Guide de formation plus récente de Oracle 1z0-883 1z0-067

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Code d'Examen: 1z0-883
Nom d'Examen: Oracle (MySQL 5.6 Database Administrator)
Questions et réponses: 100 Q&As

Code d'Examen: 1z0-067
Nom d'Examen: Oracle (Upgrade Oracle9i/10g/11g OCA to Oracle Database 12c OCP)
Questions et réponses: 177 Q&As

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NO.1 When designing an InnoDB table, identify an advantage of using the BIT datatype Instead of
one of the integer datatypes.
A. BIT columns are written by InnoDB at the head of the row, meaning they are always the first to be
retrieved.
B. Multiple BIT columns pack tightly into a row, using less space.
C. BIT (8) takes less space than eight TINYINT fields.
D. The BIT columns can be manipulated with the bitwise operators &, |, ~,

2014年9月24日星期三

Le matériel de formation de l'examen de meilleur Oracle 1z0-485 1z0-062 1z1-485

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Code d'Examen: 1z0-485
Nom d'Examen: Oracle (Exadata Database Machine Models X3-2 and X3-8 Implementation Essentials)
Questions et réponses: 71 Q&As

Code d'Examen: 1z0-062
Nom d'Examen: Oracle (Oracle Database 12c: Installation and Administration)
Questions et réponses: 166 Q&As

Code d'Examen: 1z1-485
Nom d'Examen: Oracle (Exadata Database Machine Models X3-2 and X3-8 Implementation Essentials)
Questions et réponses: 71 Q&As

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NO.1 Which two statements are true about the logical storage structure of an Oracle database?
A. An extent contains data blocks that are always physically contiguous on disk.
B. An extent can span multiple segments,
C. Each data block always corresponds to one operating system block.
D. It is possible to have tablespaces of different block sizes.
E. A data block is the smallest unit of I/O in data files.
Answer: B,D

Oracle examen   1z0-062 examen   certification 1z0-062   certification 1z0-062   1z0-062 examen
Reference: http://docs.oracle.com/cd/E11882_01 /server.112 /e40540/logical.htm#CNCPT250

NO.2 Which three statements are true about a job chain?
A. It can contain a nested chain of jobs.
B. It can be used to implement dependency-based scheduling.
C. It cannot invoke the same program or nested chain in multiple steps in the chain.
D. It cannot have more than one dependency.
E. It can be executed using event-based or time-based schedules.
Answer: A,B,E

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Reference:
http://docs.oracle.com/cd/B28359_01 /server.111 /b28310/scheduse009.htm#ADMIN12459
12. Which two tasks can be performed on an external table?
A. partitioning the table
B. creating an invisible index
C. updating the table by using an update statement
D. creating a public synonym
E. creating a view
Answer: C,D

Oracle   certification 1z0-062   1z0-062 examen   1z0-062 examen   1z0-062
13. A user establishes a connection to a database instance by using an Oracle Net connection.
You want to ensure the following:
1.The user account must be locked after five unsuccessful login attempts.
2.Data read per session must be limited for the user. 3- The user cannot have more than three
simultaneous sessions.
4. The user must have a maximum of 10 minutes session idle time before being logged off
automatically.
How would you accomplish this?
A. by granting a secure application role to the user
B. by implementing Database Resource Manager
C. by using Oracle Label Security options
D. by assigning a profile to the user
Answer: D

Oracle   certification 1z0-062   1z0-062 examen
14. Which action takes place when a file checkpoint occurs?
A. The checkpoint position is advanced in the checkpoint queue.
B. All buffers for a checkpointed file that were modified before a specific SCN are written to disk by
DBWn and the SCN is stored in the control file.
C. The Database Writer process (DBWn) writes all dirty buffers in the buffer cache to data files.
D. The Log Writer process (LGWR) writes all redo entries in the log buffer to online redo log files.
Answer: C

Oracle examen   1z0-062   certification 1z0-062   1z0-062 examen   1z0-062 examen
15. As a user of the ORCL database, you establish a database link to the remote HQ database
such that all users in the ORCL database may access tables only from the SCOTT schema in the HQ
database. SCOTT's password is TIGER. The service mane "HQ" is used to connect to the remote HQ
database.
Which command would you execute to create the database link?
A. CREATE DATABASE LINK HQ USING 'HQ';
B. CREATE DATABASE LINK HQ CONNECT TO CXJRRENT_USER USING HQ' S
C. CREATE PUBLIC DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';
D. CREATE DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';
Answer: B

Oracle examen   1z0-062 examen   1z0-062 examen   1z0-062

NO.3 Examine the resources consumed by a database instance whose current Resource Manager
plan is displayed.
SQL> SELECT name, active_sessions, queue_length, Consumed_cpu_time, cpu_waits,
cpu_wait_time FROM v$rsrc_consumer_group;
NAMEACTIVE_SESSIONS QUEUE_LENGTH CONSUMED_CPU_WAITS CPU_WAIT_TIME
OLTP__ORDER__ENTRY1029690 467 6709 OTHES__GROUPS 0 059823664089 60425 SYS_GROUP 1
02420704 914 19540 DS.S_QUERIES4245946603004 55700
Which two statements are true?
A. An attempt to start a new session by a user belonging to DSS_QUERIES fails with an error.
B. An attempt to start a new session by a user belonging to OTHE_GROUPS fails with an error.
C. The CPU_WAIT_TIME column indicates the total time that sessions in the consumer group waited
for the CPU due to resource management.
D. The CPU_WAIT_TIME column indicates the total time that sessions in the consumer group waited
for the CPU due to I/O waits and latch or enqueue contention.
E. A user belonging to the DSS__QUERIES resource consumer group can create a new session but
the session will be queued.
Answer: C,E

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NO.4 Examine the parameters for your database instance:
NAMETYPE VALUE
undo_management string AUTO undo_retentioninteger 12 00 undo_tablespace string UNDOTBS1
You execute the following command:
SQL> ALTER TABLESPACE undotbs1 RETENTION NOGUARANTEE;
Which statement is true in this scenario?
A. Undo data is written to flashback logs after 1200 seconds.
B. Inactive undo data is retained for 1200 seconds even if subsequent transactions fail due to lack of
space in the undo tablespace.
C. You can perform a Flashback Database operation only within the duration of 1200 seconds.
D. An attempt is made to keep inactive undo for 1200 seconds but transactions may overwrite the
undo before that time has elapsed.
Answer: A

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NO.5 Which two statements correctly describe the relationship between data files and logical
database structures?
A. A segment cannot span data files.
B. A data file can belong to only one tablespace.
C. An extent cannot span data files.
D. The size of an Oracle data block in a data file should be the same as the size of an OS block.
Answer: B,C

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Reference: https://mohibalvi.wordpress.com/tag/alter-tablespace/

NO.6 You plan to create a database by using the Database Configuration Assistant (DBCA), with the
following specifications:
-Applications will connect to the database via a middle tier.
-The number of concurrent user connections will be high.
-The database will have mixed workload, with the execution of complex BI queries scheduled at
night.
Which DBCA option must you choose to create the database?
A. a General Purpose database template with default memory allocation
B. a Data Warehouse database template, with the dedicated server mode option and AMM enabled
C. a General Purpose database template, with the shared server mode option and Automatic
Memory Management (AMM) enabled
D. a default database configuration
Answer: C

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Reference:
http://www.oracledistilled.com/oracle-database/administration/creating-a-databaseusing-database
-configuration-assistant/

NO.7 The ORCL database is configured to support shared server mode. You want to ensure that a
user connecting remotely to the database instance has a one-to-one ratio between client and server
processes.
Which connection method guarantees that this requirement is met?
A. connecting by using an external naming method
B. connecting by using the easy connect method
C. creating a service in the database by using the dbms_service.create_service procedure and using
this service for creating a local naming service"
D. connecting by using the local naming method with the server = dedicated parameter set in the
tnsnames.ora file for the net service
E. connecting by using a directory naming method
Answer: C,E

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NO.8 The hr user receiver, the following error while inserting data into the sales table: ERROR at line
1:
ORA-01653; unable to extend table HR.SALES by 128 in tablespace USERS
On investigation, you find that the users tablespace uses Automnrif Segment Space Management
(ASSM). It is the default tablespace for the HR user with an unlimited quota on it.
Which two methods would you use to resolve this error?
A. Altering the data life associated with the USERS tablespace to ex automatically
B. Adding a data life to the USERS tablespace
C. Changing segment space management for the USERS tablespace to manual
D. Creating a new tablespace with autoextend enabled and changing the default tablespace of the
HR user to the new tablespace
E. Enabling resumable space allocation by setting the RESUMABLE_TIMEOUT parameter to a
nonzero value
Answer: A,D

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2014年9月22日星期一

Oracle meilleur examen 1z0-481 1z0-067 1z1-034, questions et réponses

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Code d'Examen: 1z0-481
Nom d'Examen: Oracle (Oracle GoldenGate 11g Certified Implementation Exam Essentials)
Questions et réponses: 79 Q&As

Code d'Examen: 1z0-067
Nom d'Examen: Oracle (Upgrade Oracle9i/10g/11g OCA to Oracle Database 12c OCP)
Questions et réponses: 177 Q&As

Code d'Examen: 1z1-034
Nom d'Examen: Oracle (Upgrade Oracle9i/10g OCA to Oracle Database 11g OCP)
Questions et réponses: 148 Q&As

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NO.1 Which parameter must be set to which value to implement automatic PGA memory
management?
A. Set memory_target to zero.
B. Set STATISTICS_LEVEL to BASIC.
C. Set pga_aggregate_target to a nonzero value.
D. Set pga_aggregate_target and sga_target to the same value.
E. Set sgajtarget to zero.
Answer: C

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Reference:http://docs.oracle.com/cd/B28359_01/server.111/b28310/memory004.htm#ADM
IN11233

NO.2 Which three statements are true regarding the use of the Database Migration Assistant for
Unicode (DMU)?
A. A DBA can check specific tables with the DMU
B. The database to be migrated must be opened read-only.
C. The release of the database to be converted can be any release since 9.2.0.8.
D. The DMUcan report columns that are too long in the converted characterset
E. The DMUcan report columns that are not represented in the converted characterset
Answer: A,D,E

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Explanation:
A: In certain situations, you may want to exclude selected columns or tables from scanning or
conversion steps of the migration process.
D: Exceed column limit
The cell data will not fit into a column after conversion.
E: Need conversion
The cell data needs to be converted, because its binary representation in the target
character set is different than the representation in the current character set, but neither
length limit issues nor invalid representation issues have been found.

NO.3 Which statement is true about the loss or damage of a temp file that belongs to the temporary
tablespace of a pluggable database (PDB)?
A. The PDB is closed and the temp file is re-created automatically when the PDB is opened.
B. The PDB is closed and requires media recovery at the PDB level.
C. The PDB does not close and the temp file is re-created automatically whenever the container
database (CDB) is opened.
D. The PDB does not close and starts by using the default temporary tablespace defined for the CD
Answer: A

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NO.4 You issue the command:
SQL> ALTER DATABASE BACKUP CONTROLFILE TO TRACE;
Which statement is true about the command?
A. It creates a copy of the control file and stores it in the location specifiedin the diagnostic_dest
initialization parameter.
B. It creates a file that contains the SQL statement, which is required to re-create the control file.
C. It updates the alert log file with the location and contents of the control file.
D. It creates a binary backup of the control file.
Answer: A

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NO.5 Which two statements are true about service creation for pluggable databases (PDBs)?
A. When a PDB is created, a service is automatically started in the instance with the same name as
the PDB.
B. The default service that is automatically created by a database at the time of PDB creation can be
dropped, provided a new additional service is created.
C. A database managed by Oracle Restart can have additional services created or existing services
modified by using the srvctl utility for each PDB.
D. Only a common user can create additional services for a PDB.
E. When a PDB is created, a service with the same name as the PDB is created in the PDB.
Answer: C,D

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NO.6 For which two requirements would you use the Database Resource Manager?
A. limiting the CPU used per database call
B. specifying the maximum number of concurrent sessions allowed for a user
C. specifying the amount of private space a session can allocate in the shared pool of the SGA
D. limiting the degree of parallelism of operations performed by a user or group of users
E. specifying an idle time limit that applies to sessions that are idle and blocking other sessions
Answer: B,E

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NO.7 Automatic Undo Management is enabled for your database. You want a user to retrieve
metadata and historical data for a given transaction or for transactions in a given time interval.
Which three are prerequisites to fulfill this requirement?
A. Minimal supplemental logging must be enabled.
B. The database must be running in archivelog mode.
C. Flashback Data Archive must be created and the flashback archive administer system privilege
must be granted to the user.
D. The flashback any table privilege must be granted to the user.
E. The select any transaction privilege must be granted to the user.
F. Therecycle binparameter must be set to on.
Answer: C,D,E

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NO.8 You notice that the performance of your production 24/7 Oracle 12c database has significantly
degraded. Sometimes you are not able to connect to the instance because it hangs. You do not want
to restart the database instance.
How can you detect the cause of the degraded performance?
A. Enable Memory Access Mode, which reads performance data from SGA.
B. Use emergency monitoring to fetch data directly from SGA for analysis.
C. Run Automatic Database Diagnostic Monitor (ADDM) to fetch information from the latest
Automatic Workload Repository (AWR) snapshots.
D. Use Active Session History (ASH) data and hang analysis in regular performance monitoring,
E. Run ADDM in diagnostic mode.
Answer: C

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Explanation:
* In most cases, ADDM output should be the first place that a DBA looks when notified of a
performance problem.
* Performance degradation of the database occurs when your database was performing optimally in
the past, such as 6 months ago, but has gradually degraded to a point where it becomes noticeable to
the users. The Automatic Workload Repository (AWR) Compare Periods report enables you to
compare database performance between two periods of time.
While an AWR report shows AWR data between two snapshots (or two points in time), the AWR
Compare Periods report shows the difference between two periods (or two AWR reports with a total
of four snapshots). Using the AWR Compare Periods report helps you to identify detailed
performance attributes and configuration settings that differ between two time periods.
Reference: Resolving Performance Degradation Over Time

2014年8月17日星期日

Le plus récent matériel de formation Oracle 1z1-485 1z0-485 1z0-100

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Code d'Examen: 1z1-485
Nom d'Examen: Oracle (Exadata Database Machine Models X3-2 and X3-8 Implementation Essentials)
Questions et réponses: 71 Q&As

Code d'Examen: 1z0-485
Nom d'Examen: Oracle (Exadata Database Machine Models X3-2 and X3-8 Implementation Essentials)
Questions et réponses: 71 Q&As

Code d'Examen: 1z0-100
Nom d'Examen: Oracle (Oracle Linux 5 and 6 System Administration)
Questions et réponses: 108 Q&As

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NO.1 Examine this output:
# df -t nfs
FilesystemSizeUsedAvailUse%Mounted on
o16:export30G21G7.6G74%/mnt
# 1s -1 /mnt/nfs.sh
-rwxr-mr-x. 1 root root 22 May 8 16:37 /mnt/nfs.sh
# file /mnt/nfs.sh
/mnt/nfs.sh: Bourne-Again shell script text executables
# /mnt/nfs.sh
bash: /mnt/nfs.sh: Permission denied What is the reason for the error?
A. The file system was exported on host o16 using the ROOT_SQUASH option.
B. The /export filesystem was mounted with the NOEXEC option on host o16.
C. The filesystem mounted on /mnt was mounted with the NOEXEC option.
D. The filesystem was exported on host o16 by using the NO_ROOT_SQUASH option.
Answer: A

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NO.2 You want to display the value of a shell variable called service after assigning a value as
shown:
SERVICE =ACCT S
Which two settings will display the name of the variable and its value?
A. set | grep service
B. echo $SERVICE
C. env | grep SERVICE
D. env $SERVICE
E. set $SERVICE
Answer: B,C

Oracle examen   certification 1z0-100   1z0-100
Explanation:
C: env - set the environment for command invocation
If no utility operand is specified, the resulting environment shall be written to the standard output,
with one name= value pair per line.

NO.3 This MDADM output:
Which two aspects can be determined from this output?
A. A device failed and has been removed from this RAID set.
B. It is no longer possible to write to this RAID set.
C. Read and write performance is no longer optimal on this RAID set.
D. This RAID set was built without a spare device.
E. Only Write performance is no longer optimal on this RAID set.
Answer: A,D

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NO.4 Which statements is true concerning Oracle Linux configuration files for users and groups?
A. The /etc/passwd file contains hashed passwords for each user.
B. The /etc/shadow file contains hashed passwords for each user.
C. The GECOS field in /etc/passwd file may be empty.
D. The /etc/group file contains the group name and the hashed group password.
Answer: B

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Explanation:
/etc/shadow file stores actual password in encrypted (one-way hashed) format for user's account
with additional properties related to user password i.e. it stores secure user account information

NO.5 Which two software packages are prerequisites for enabling the configuration and use of a
Network information Service (Nis) client?
A. nis-tools
B. slapi-nis
C. ypbind
D. nisserv
E. nisbind
F. yp-tools
Answer: C,E

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Explanation:
C: ypbind finds the server for NIS domains and maintains the NIS binding information. The client
(normaly the NIS routines in the standard C library) could get the information over RPC from ypbind
or read the binding files.
E: Setting up a NIS master server:
Required packages: yp-tools ypbind ypserv portmap

NO.6 Examine the command on its output:
[root@FAROUT ~] # modprobe -v nfs
Insmod /lib/modules/ 2.6.39-100.0.12.e16uek.x86_64 /kernel/fs/nfs_common/nfs_acl.ko insmod
/lob/modules/ 2.6.39
100.0.12.e16uek.x86_64 /kernel/net/sunrpc/auth_gss/auth_rpcgss.ko
Insmod /lib/modules/ 2.6.39-100.0.12.e16uek.x86_64 /kernel/fs/fscache/fscache/ko
Insmod /lib/modules/ 2.6.39-100.0.12.e16uek.x86_64 /kernel/fs/locked.ko
Insmod /lib/modules/ 2.6.39-100.0.12.e16uek.x86_64 /kernel/fs/nfs/nfs.ko
Which two statements are true about the modprobe command?
A. It will load the nfs module if all the modules upon which it depends have been loaded.
B. It displays the dependency resolution for the nfs module and loads all the modules upon which
nfs depends before loading the nfs module.
C. It verifies that the nfs module and all other modules that depend on the nfs module are installed.
D. It displays the dependency resolution that would occur if the nfs module were to be loaded using
modprobe nfs.
E. It only loads the nfs module if all the modules upon which it depends have not been loaded yet.
Answer: A

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Reference: http://redhat.activeventure.com/ 8 /customizationguide/ch-kernel-modules.html (kernel
module utilities)

NO.7 What is the main advantage of the Oracle Unbreakable Enterprise Kernel compared with the
Red Hat compatible kernel?
A. It is more secure and, therefore, more difficult to hack.
B. It has a lower Mean Time Between Failures.
C. It provides higher availability for applications by reducing Mean Time to Recovery.
D. It scales better for more CPUS, memory, and Infiniband network connections.
Answer: D

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Explanation:
The Unbreakable Enterprise Kernel, for those who want to leverage the latest
features from
mainline Linux and boost performance and scalability.
The Red Hat Compatible Kernel, for those who prefer strict Red Hat kernel ABI (kABI)
compatibility.

NO.8 Examine these statements and their output taken right after successful install of Oracle Linux:
[root@FAROUT /] rpm -q firstboot
Firstboot -1.110.10-1.0.2.e16.x86_64
[root @FAROUT /] # chkconfig - - list firstboot
Firstboot 0:off 2:off 3:off 4:off 5:off 6;off
[root@FAROUT /] # /etc/sysconfig/firstboot
RUN_FIRSTBOOT=NO
What is the conclusion?
A. The option to run firstboot was deselected during Oracle Linux installation.
B. The system was installed with desktop graphical packages and rebooted and the firstboot utility
ran successful.
C. Firstboot never ran in any run level because the service is turned off for all run levels.
D. The system was installed without selecting desktop graphical packages, thereby disabling
firstboot from running.
Answer: A

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Explanation:
Firstboot is set to off for all levels.
Example:
The rm command below remove or delate the firstboot file in order to make sure the firstboot
program running when we restart or reboot the Fedora machine.
[root@fedora ~]# rm /etc/sysconfig/firstboot
rm: remove regular file `/etc/sysconfig/firstboot'? y
[root@fedora ~]#
Then check and make sure that firstboot program or firstboot service is run when your Fedora
startup/boot up.
Check firstboot services
[root@fedora ~]# chkconfig --list firstboot
firstboot 0:off 1:off 2:off 3:off 4:off 5:off 6:off
[root@fedora ~]#

2014年8月5日星期二

Le matériel de formation de l'examen de meilleur Oracle 1Z0-466 1z0-485 1Z1-465

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Code d'Examen: 1Z0-466
Nom d'Examen: Oracle (Project Lifecycle Management Essentials)
Questions et réponses: 98 Q&As

Code d'Examen: 1z0-485
Nom d'Examen: Oracle (Exadata Database Machine Models X3-2 and X3-8 Implementation Essentials)
Questions et réponses: 71 Q&As

Code d'Examen: 1Z1-465
Nom d'Examen: Oracle (Oracle RightNow CX Cloud Service 2012 Essentials)
Questions et réponses: 80 Q&As

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NO.1 At the end of iteration phase, during Project Execution and Control, which three key tasks
should be conducted?
A. QM.050 Perform Quality Assurance
B. WM.050 ManageApprovals
C. CMM.030 Manage Project Team Communication
D. PKM.020 Conduct Baseline Risk Assessment
E. SM.060 Close Scope management
F. PKM.060 Conduct Post-Production Risk Assessment
G. OCHM.040 Establish Follow-Up process
Answer: A,B,C

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NO.2 What is not true about planning in OUM?
A. OUM has been developed with the intent that the approach for a given project be built up from a
core set of activities.
B. Projects should be tailored down from the full OUM work breakdown structures.
C. OUM takes an iterative and incremental approach to planning a project.
D. Tasks within OUM are considered place holders for work.
Answer: D

certification Oracle   1Z0-466   1Z0-466 examen
Explanation:
Incorrect: Not A:OUM is designed to support a broad range of project types. As such, it must be
flexible andscalable. The appropriate point of balance for a given project will vary based on a
number of project risk and scale factors. The method has been developed with the intent that the
approach for a given project be "built up" from a core set of activities to implement an appropriate
level of discipline, rather than "tailored down".
Not C:OUM recognizes the advantages of an iterative and incremental approach to development
and deployment of information systems. Any of the tasks within OUM may be iterated. Whether or
not to iterate, as well as the number of iterations, varies. Tasks may be iterated to increase quality of
the work products to a desired level, to add sufficient level of detail, or to refine and expand the
work products on the basis of user feedback.

NO.3 According to the recommended training for this exam, what is the definition of a project?
A. A sequence of tasks with a beginning and an end, bound by time, responses, and desired results
B. Anything for which there is an executed contact
C. A sequence of tasks for there is a Statement work
D. A sequence of tasks with a specified end date
Answer: A

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NO.4 Which is the type of closure described as the mechanical an analytical step associated with the
closure of a project or phase?
A. Contractual
B. Typical
C. Intra-business
D. Conventional
Answer: A

Oracle   certification 1Z0-466   certification 1Z0-466

NO.5 Select the three key project roles as prescribed by OUM Manage.
A. Stakeholder
B. Change Control Board
C. Issue Review Board
D. Project Team
E. Testing Committee
Answer: A,B,D

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Explanation:
A:Project managers use OUM to make sure they and their stakeholders develop a shared
understanding of what is needed, choose an appropriate architecture, and transfer the ownership of
the end-product to the stakeholders.
B:CCB(Change Control Board)is a review committee that discusses and approves requests for
changes to On Demand customer system configurations. The change requests are fulfilled in the
following ways:
A work guideline is generated by engineering for operations to use and implement.
The changes are included in Oracle Certified Configurations.
D:Project teams to take advantage of this experience by

NO.6 What is not true about risk management in OUM Manage?
A. The project manager should regularly conduct risk assessments.
B. Risks become even more critical during the Project Execution and Control Phase.
C. Particular attention should be paid to risks prior to production cutover.
D. If a baseline risk assessment is done during the Project Startup phase, there are no further risk
assessment required on the project.
Answer: D

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NO.7 Which is true about OUM Manage?
A. It emphasizes clearly documenting the scope of the project and the exact procedures to
implement changes to this scope.
B. It is not possible to control the project timeline without a detailed project plan.
C. It is necessary to only document the items in the scope.
D. If the project sponsor requires a functional change, the project team must comply with the
request.
Answer: A

Oracle examen   1Z0-466 examen   1Z0-466
Explanation:
The Manage focus area is organized into 13 processes: Bid Transition (A)Scope Management
Financial Management
Work Management Risk Management Issue and Problem Management Staff Management
Communication Management Quality Management Configuration Management Infrastructure
Management Procurement Management Organizational Change Management
Collectively, these processes form a comprehensive set of tasks required to manage Oracle-based
development and implementation projects. Every project includes most, if not all, of these
processes, whether they are the responsibility of a consulting organization, a client organization, or
a third party.

NO.8 What describes the nature of the activities within the Project Execution and Control phase?
A. They are dependent upon one another.
B. They are dependent upon earned value.
C. They are ongoing.
D. They are grouped according to priority.
Answer: A

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Code d'Examen: 1Z1-478
Nom d'Examen: Oracle (Oracle SOA Suite 11g Essentials)
Questions et réponses: 75 Q&As

Code d'Examen: 1z0-062
Nom d'Examen: Oracle (Oracle Database 12c: Installation and Administration)
Questions et réponses: 166 Q&As

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NO.1 When more than one policy is attached to a policy subject, the combination of policies needs
to be valid. Which statement is true about the valid combination of policies for a policy subject?
A. Only one MTOM policy can be attached to a policy subject.
B. More than one Reliable Messaging policy can be attached to a policy subject.
C. Both a Reliable Messaging policy and a WS-Addressing policy cannot be attached to the same
policy subject.
D. Only one security policy can be attached to a policy subject.
Answer: A

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Explanation:
Note:
*Within a SOA composite application, you must attach the Oracle WS-MTOM policy to service and
reference binding components to receive and send MTOM (MIME binary) attachments within
Oracle SOA Suite.
*Message Transmission Optimization Mechanism (MTOM)
Ensures that attachments are in MTOM format. This format enables binary data to be sent to and
from web services. This reduces the transmission size on the wire.
*ReliabilityPolicy
Supports the WS-Reliable Messaging protocol. This guarantees the end-to-end delivery of
messages.
* Addressing Policy Verifies that simple object access protocol (SOAP) messages include
WS-Addressing headers in conformance with the WS-Addressing specification. Transport-level data
is included in the XML message rather than relying on the network-level transport to convey this
information.

NO.2 Which two approaches are valid when using dynamic partner links in a BPEL process?
A. A WSDL file, which contains multiple services that use the same portType, is available at design
time, but the decision to determine which service is used can only be made at runtime.
B. When the BPEL process is designed, the endpoint URL of the WSDL file is known but the services
and port types are not known.
C. When the BPEL process is designed, the services and port types of the WSDL file are known but
the endpoint URI is not known.
D. A WSDL file, which contains multiple services that use different portTypes, is available at design
time, but the decision to determine which server us used can only be made at runtime.
Answer: A,C

certification Oracle   certification 1Z1-478   certification 1Z1-478
Explanation:
A (not D):How To Create a Dynamic Partner Link at Design Time for Use at Runtime
To create a dynamic partner link at design time for use at runtime:
etc
C (not B):The BPEL specification mandates that only the partner endpoint reference (EPR) can be
changed dynamically. In BPEL terms, only the partnerRole of a partner link element can have a new
value assigned. The myRole value doesn't change after the BPEL has been deployed.
Note: *Dynamic Partner Links and Dynamic Addressing During the design-time of an application,
you may need to configure certain services whose endpoints (addresses) are not known beforehand,
or it may be necessary to change an endpoint reference while the application is running. The
Dynamic Partner link feature allows you to dynamically assign an endpoint reference to the partner
link. This means that you can use onepartner link for subsequent calls to different web-services
(provided that the services use the same interface). *For successful deployment of the process, a
partner link should be completely defined. When you deploy the project, the WSDL file for the
partner link should contain and define both the abstract and the concrete information for the
partner link, including address and port, though later the concrete information can be changed
independently from the WSDL file.

NO.3 A partner needs to access services that are defined in one of your Service Composite
Architecture (SCA) applications via a web service interface. Which approach (and accompanying
reasoning) describes a loosely coupled and robust solution?
A. Use Oracle Service Bus to provide an Interface layer over your SCA application. This enables you
to hide the locations of your SCA application, perform load-balancing across those endpoints, and
provide the ability to define service level agreements to help ensure that you are meeting your
contractual obligations to the partner.
B. Use the Mediator component to provide a web service interface to your SCA application. This
arrives you the flexibility of using the industry standard XSLT technology to perform translation and
transformations.
C. Use Oracle Service Bus to provide an interface layer over your SCA application. This enables you
to "skin" your SCA application with a web service interface and still provide a robust experience to
the partner.
D. Allow the partner simply to connect directly to the SCA application. This provides the best
performance and helps keep the partner happy.
Answer: B

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NO.4 You expand a business rule component that a colleague added to the BPEL process. You see an
Assign element named Facts_To_Rule_Service.
Which statement is true bout this Assign element?
A. It was added automatically based on entries that your colleague made in the dialog box that
approved when the business rule component was added to the BPEL model.
B. Your colleague manually added this Assign element after adding the business rule component to
the BPEL Model.
C. This Assign element was automatically added when your colleague manually addedthe
corresponding Rule_Service_To_Facts assign to the BPEL model.
D. You can delete this Assign because it was created for documentation purposes only.
Answer: A

Oracle   certification 1Z1-478   1Z1-478
Explanation:
Note: *Facts_To_Rule_Service: Assigns the facts to a variable.

NO.5 Identify two features of Oracle BAM.
A. Enterprise Manager's monitoring capabilities are central to Oracle BAM's ability to monitor
performance indicators.
B. You can analyze and present Information from activities spanning multiple systems and
applications.
C. Rich browser-based dashboards provide visibility into current values of key performance
indicators (KPIs).
D. There is a built-in trouble ticket system to track assignment and completion of corrective actions.
Answer: A,C

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Explanation:
Note: *Oracle Business Activity Monitoring (Oracle BAM) gives business executives the ability to
monitor their business services and processes in the enterprise, to correlate KPIs down to the actual
business process themselves, and most important, to change business processes quickly or to take
corrective action if the business environment changes.

NO.6 Which two features are provided by decision tables?
A. Sets of input data can be bucketed and reviewed for gaps.
B. Data sets can be reviewed for conflicts.
C. Data can be used for only one rule evaluation.
D. A rule evaluation can be used only to enter new output data.
Answer: A,B

Oracle   1Z1-478 examen   1Z1-478
Explanation:
After you create a Decision Table there are operations that you may want to perform on the
Decision Table, including the following:
(A)Find and fix gaps in a Decision Table (B)Finding and resolving conflicts between rules in a
Decision Table Compact or split cells in a Decision Table Merge a condition or split a condition in a
Decision Table
A: *Compact the Decision Table
In this step you compact the rules to merge from eighteen rules to nine rules. This automatically
eliminates the rules that are not needed and preserves the no gap, no conflict properties for the
Decision Table.
*The Conditions area in a Decision Table includes one or more condition rows. Each condition row
has a condition expression and, for each rule, a condition cell. A condition expression is an
expression that you build in Rules Designer. The condition expression is often a fact property or a
function result, but it can be any expression that has a type that can be associated with a bucketset.
B:A Decision Table displays multiple related rules in a single spreadsheet-style view. In Rules
Designer a Decision Table presents a collection of related business rules with condition rows, rules,
and actions presented in a tabular form that is easy to understand. Business users can compare cells
and their values at a glance and can use Decision Table rule analysis features by clicking icons and
selecting values in Rules Designer to help identify and correct conflicting or missing cases.

NO.7 In your solution, a web service client needs to invoke a series of three web services in support
of a single transaction. The third web service needs the identity of the original web service client.
Which statement describes how the identity is made available by Oracle Web Services Manager
(OWSM)?
A. The transaction manager accesses an internal table that maintains credentials used to invoke
each individual web service in the chain.
B. Each web service in the chain does its own authentication so the third web service handles its
own identity checking.
C. OWSM sets the user in the Java Authentication and Authorization (JAAS) Subject when the first
web service successfully authenticates, and the Java Subject is used by subsequent web services to
access the identity.
D. OWSM stores a SAML token from the first web service invocation in a database table, and that
table is accessed by subsequent web services in the chain to retrieve identity.
Answer: D

Oracle examen   1Z1-478 examen   1Z1-478 examen
Explanation:
Oracle Web Services Manager is a component of the Oracle Enterprise Manager Fusion Middleware
Control, a run-time framework that provides centralized management and governance of Oracle
SOA Suite environments and applications. You create and configureOracle Web Services Manager
policies in Oracle Enterprise Manager, and those policies are persisted in a policy store (a database
is recommended). Oracle Web Services Manager lets you define policies against an LDAP directory
and generate standard security tokens (such as SAML tokens) to propagate identities across multiple
Web services used in a single transaction.

NO.8 Identify two correct descriptions of Oracle Web Services Manager (OWSM).
A. It enables you to externalize web services security from the applications youbuild.
B. It manages policies in a distributed policy manager that serves as a single policy enforcement
point.
C. Use security and management events, captured by OWSM agents, are displayed using Oracle
BAM.
D. It supplies predefined security policies that enable declarative security and management
definition.
E. It uses Oracle Event Processing (OEP) to determine when security violations have occurred.
Answer: B,C

Oracle examen   1Z1-478   1Z1-478 examen   1Z1-478 examen
Explanation:
Note: *Oracle WSM allows companies to (1) centrally define and store declarative policies applied
to the multiple web services making up a SOA infrastructure, (2) locally enforce security and
management policies through configurable agents, and (3) monitor runtime security events such as
failed authentication or authorization.
*Oracle Web Services Manager offers a comprehensive and easy-to-use solution for policy
management and security of service infrastructure. It provides visibility and control of the policies
through a centralized administration interface offered by Oracle Enterprise Manager.

2014年7月14日星期一

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Code d'Examen: 1Z0-117
Nom d'Examen: Oracle (Oracle Database 11g Release 2: SQL Tuning Exam)
Questions et réponses: 125 Q&As

Code d'Examen: 1Z1-052
Nom d'Examen: Oracle (Oracle Database 11g: Administrator I )
Questions et réponses: 188 Q&As

Code d'Examen: 1Z0-204
Nom d'Examen: Oracle (Oracle EBS R12: E-Business Essentials)
Questions et réponses: 199 Q&As

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NO.1 Note the functionalities of various background processes:
1. Perform recovery at instance startup.
2: Free the resources used by a user process when it fails.
3: Cleanup the database buffer cache when a process fails.
4: Dynamically register database services with listeners.
5: Monitor sessions for idle session timeout.
6: Cleanup unused temporary segments.
7: Record the checkpoint information in control file.
Which option has the correct functionalities listed for a background process?
A.Checkpoint (CKPT): 1, 2, 5
B.System Monitor (SMON): 1, 6
C.Process Monitor (PMON): 4, 6, 7
D.Database Writer (DBWR): 1, 3, 4
Answer: B

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NO.2 Which two statements about the background process of the database writer are true? (Choose two.)
A.It is possible to have multiple database writers in an Oracle instance.
B.It writes dirty buffers, if any, to data files whenever a checkpoint occurs.
C.It writes dirty buffers, if any, to data files whenever a transaction commits.
D.It writes dirty buffers, if any, to data files before the log writer (LGWR) writes.
Answer: AB

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NO.3 View the Exhibit and identify the component marked with a question mark.
A.Checkpoint (CKPT)
B.Process Monitor (PMON)
C.Archiver Processes (ARCn)
D.Recoverer Process (RECO)
E.Memory Manager process (MMAN)
Answer: A

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NO.4 Which two statements are true about Shared SQL Area and Private SQL Area? (Choose two.)
A.Shared SQL Area will be allocated in the shared pool.
B.Shared SQL Area will be allocated when a session starts.
C.Shared SQL Area will be allocated in the large pool always.
D.Private SQL Area will be allocated in the Program Global Area (PGA) always.
E.Shared SQL Area and Private SQL Area will be allocated in the PGA or large pool.
F.The number of Private SQL Area allocations is dependent on the OPEN_CURSORS parameter.
Answer: AF

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NO.5 Note the following functionalities of various background processes:
1. Record the checkpoint information in data file headers.
2: Perform recovery at instance startup.
3: Cleanup unused temporary segments.
4: Free the resources used by a user process when it fails.
5: Dynamically register database services with listeners.
6: Monitor sessions for idle session timeout.
Which option has the correct functionalities listed for a background process?
A.Archiver Process (ARCn): 1, 2, 5
B.System Monitor Process (SMON): 1, 4, 5
C.Process Monitor Process (PMON): 4, 5, 6
D.Database Writer Process (DBWn): 1, 3, 4
Answer: C

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NO.6 Identify the memory component from which memory may be allocated for:
1. Session memory for the shared server
2: Buffers for I/O slaves
3: Oracle Database Recovery Manager (RMAN) backup and restore operations
A.Large Pool
B.Redo Log Buffer
C.Database Buffer Cache
D.Program Global Area (PGA)
Answer: A

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NO.7 Which is the correct description of a pinned buffer in the database buffer cache?
A.The buffer is currently being accessed.
B.The buffer is empty and has not been used.
C.The contents of the buffer have changed and must be flushed to the disk by the DBWn process.
D.The buffer is a candidate for immediate aging out and its contents are synchronized with the block
contents on the disk.
Answer: A

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NO.8 View the Exhibit and examine the attributes of an undo tablespace.
In an OLTP system, the user SCOTT has started a query on a large table in the peak transactional hour
that performs bulk inserts. The query runs for more than 15 minutes and then SCOTT receives the
following error:
ORA-01555: snapshot too old
What could be the reason for this error?
A.The query is unable to get a read-consistent image.
B.There is not enough space in Flash Recovery Area.
C.There is not enough free space in the flashback archive.
D.The query is unable to place data blocks in undo tablespace
Answer: A

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Code d'Examen: 1Z0-041
Nom d'Examen: Oracle (Oracle Database 10g: DBA Assessment )
Questions et réponses: 65 Q&As

Code d'Examen: 1z0-062
Nom d'Examen: Oracle (Oracle Database 12c: Installation and Administration)
Questions et réponses: 166 Q&As

Code d'Examen: 1Z0-051
Nom d'Examen: Oracle (Oracle Database: SQL Fundamentals I)
Questions et réponses: 292 Q&As

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NO.1 Which three statements are true about a job chain?
A. It can contain a nested chain of jobs.
B. It can be used to implement dependency-based scheduling.
C. It cannot invoke the same program or nested chain in multiple steps in the chain.
D. It cannot have more than one dependency.
E. It can be executed using event-based or time-based schedules.
Answer: A,B,E

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Reference:
http://docs.oracle.com/cd/B28359_01 /server.111 /b28310/scheduse009.htm#ADMIN12459
12. Which two tasks can be performed on an external table?
A. partitioning the table
B. creating an invisible index
C. updating the table by using an update statement
D. creating a public synonym
E. creating a view
Answer: C,D

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13. A user establishes a connection to a database instance by using an Oracle Net connection.
You want to ensure the following:
1.The user account must be locked after five unsuccessful login attempts.
2.Data read per session must be limited for the user. 3- The user cannot have more than three
simultaneous sessions.
4. The user must have a maximum of 10 minutes session idle time before being logged off
automatically.
How would you accomplish this?
A. by granting a secure application role to the user
B. by implementing Database Resource Manager
C. by using Oracle Label Security options
D. by assigning a profile to the user
Answer: D

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14. Which action takes place when a file checkpoint occurs?
A. The checkpoint position is advanced in the checkpoint queue.
B. All buffers for a checkpointed file that were modified before a specific SCN are written to disk by
DBWn and the SCN is stored in the control file.
C. The Database Writer process (DBWn) writes all dirty buffers in the buffer cache to data files.
D. The Log Writer process (LGWR) writes all redo entries in the log buffer to online redo log files.
Answer: C

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15. As a user of the ORCL database, you establish a database link to the remote HQ database
such that all users in the ORCL database may access tables only from the SCOTT schema in the HQ
database. SCOTT's password is TIGER. The service mane "HQ" is used to connect to the remote HQ
database.
Which command would you execute to create the database link?
A. CREATE DATABASE LINK HQ USING 'HQ';
B. CREATE DATABASE LINK HQ CONNECT TO CXJRRENT_USER USING HQ' S
C. CREATE PUBLIC DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';
D. CREATE DATABASE LINK HQ CONNECT TO scott IDENTIFIED BY tiger USING 'HQ';
Answer: B

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NO.2 Examine the parameters for your database instance:
NAMETYPE VALUE
undo_management string AUTO undo_retentioninteger 12 00 undo_tablespace string UNDOTBS1
You execute the following command:
SQL> ALTER TABLESPACE undotbs1 RETENTION NOGUARANTEE;
Which statement is true in this scenario?
A. Undo data is written to flashback logs after 1200 seconds.
B. Inactive undo data is retained for 1200 seconds even if subsequent transactions fail due to lack of
space in the undo tablespace.
C. You can perform a Flashback Database operation only within the duration of 1200 seconds.
D. An attempt is made to keep inactive undo for 1200 seconds but transactions may overwrite the
undo before that time has elapsed.
Answer: A

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NO.3 The hr user receiver, the following error while inserting data into the sales table: ERROR at line
1:
ORA-01653; unable to extend table HR.SALES by 128 in tablespace USERS
On investigation, you find that the users tablespace uses Automnrif Segment Space Management
(ASSM). It is the default tablespace for the HR user with an unlimited quota on it.
Which two methods would you use to resolve this error?
A. Altering the data life associated with the USERS tablespace to ex automatically
B. Adding a data life to the USERS tablespace
C. Changing segment space management for the USERS tablespace to manual
D. Creating a new tablespace with autoextend enabled and changing the default tablespace of the
HR user to the new tablespace
E. Enabling resumable space allocation by setting the RESUMABLE_TIMEOUT parameter to a
nonzero value
Answer: A,D

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NO.4 Which two statements are true about the logical storage structure of an Oracle database?
A. An extent contains data blocks that are always physically contiguous on disk.
B. An extent can span multiple segments,
C. Each data block always corresponds to one operating system block.
D. It is possible to have tablespaces of different block sizes.
E. A data block is the smallest unit of I/O in data files.
Answer: B,D

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Reference: http://docs.oracle.com/cd/E11882_01 /server.112 /e40540/logical.htm#CNCPT250

NO.5 Which two statements correctly describe the relationship between data files and logical
database structures?
A. A segment cannot span data files.
B. A data file can belong to only one tablespace.
C. An extent cannot span data files.
D. The size of an Oracle data block in a data file should be the same as the size of an OS block.
Answer: B,C

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Reference: https://mohibalvi.wordpress.com/tag/alter-tablespace/

NO.6 The ORCL database is configured to support shared server mode. You want to ensure that a
user connecting remotely to the database instance has a one-to-one ratio between client and server
processes.
Which connection method guarantees that this requirement is met?
A. connecting by using an external naming method
B. connecting by using the easy connect method
C. creating a service in the database by using the dbms_service.create_service procedure and using
this service for creating a local naming service"
D. connecting by using the local naming method with the server = dedicated parameter set in the
tnsnames.ora file for the net service
E. connecting by using a directory naming method
Answer: C,E

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NO.7 What happens if a maintenance window closes before a job that collects optimizer statistics
completes?
A. The job is terminated and the gathered statistics are not saved.
B. The job is terminated but the gathered statistics are not published.
C. The job continues to run until all statistics are gathered.
D. The job is terminated and statistics for the remaining objects are collected the next time the
maintenance window opens.
Answer: D

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NO.8 You plan to create a database by using the Database Configuration Assistant (DBCA), with the
following specifications:
-Applications will connect to the database via a middle tier.
-The number of concurrent user connections will be high.
-The database will have mixed workload, with the execution of complex BI queries scheduled at
night.
Which DBCA option must you choose to create the database?
A. a General Purpose database template with default memory allocation
B. a Data Warehouse database template, with the dedicated server mode option and AMM enabled
C. a General Purpose database template, with the shared server mode option and Automatic
Memory Management (AMM) enabled
D. a default database configuration
Answer: C

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Reference:
http://www.oracledistilled.com/oracle-database/administration/creating-a-databaseusing-database
-configuration-assistant/