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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
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