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Understanding functional and technical aspects of Oracle Database Administration II Exam Number: 1Z0-083

The following will be discussed in the ORACLE 1Z0-083 exam dumps:

  • Duplicate Databases
  • Diagnosing Database Issues
  • Configure and using an RMAN recovery catalog
  • Employ the best Oracle Database recovery technology for your failure situation
  • Configuring and using RMAN - Oracle Database: Backup and Recovery Workshop
  • Configure RMAN and the Database for Recoverability
  • Describe and use Recovery technology for Crash, Complete, and Point-in-time recovry
  • Perform flashback operations
  • Diagnosing Failures - Oracle Database: Backup and Recovery Workshop
  • Configure your Database to support Flashback

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Oracle Database Administration II Sample Questions (Q77-Q82):

While backing up to an SBT channel, you determine that the read phase of your compressed Recovery Manager (RMAN) incremental level 0 backup is a bottleneck.
FORCE LOGGING is enabled for the database.
Which two could improve read performance? (Choose two.)

  • A. Enable asynchronous disk I/O.
  • B. Increase the size of the database buffer cache.
  • C. Increase the size of tape I/O buffers.
  • D. Increase the level of RMAN multiplexing.
  • E. Disable FORCE LOGGING for the database.

Answer: B,D

Examine this output:
Which two are true? (Choose two.)

  • A. PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.
  • B. PDB1 is always limited to 40% of the available system resources regardless of demand.
  • C. PDB3 can use all available parallel execution processes at times.
  • D. PDB2 is guaranteed at least 25% of the available parallel execution processes if there is enough demand.
  • E. Any PDB not specified in the plan will be unable to execute statements in parallel.
  • F. Any PDB not specified in the plan will be able to use a maximum of 16.5% of the available system resources.

Answer: A,E

In a recent Automatic Workload Repository (AWR) report for your database, you notice a high number of buffer busy waits. The database consists of locally managed tablespaces with free list managed segments. On further investigation, you f ind that buffer busy waits is caused by contention on data blocks. Which option would you consider first to decrease the wait event immediately?

  • A. Decreasing PCTFREE
  • B. Increasing db_buffer_cache based on t he V$DB_CACHE_ADVICE recommendation
  • C. Using Automatic Segment Space Management (ASSM)
  • D. Decreasing PCTUSED
  • E. Increasing the number of DBWN process

Answer: C

You are managing this configuration:
* CDB1 is a container database.
* PDB1 and PDB2 are two pluggable databases in CDB1.
* USER1.EMP is a table in PDB1 and USER2.DEPT is a table in PDB2.
CDB1 user SYS executes these commands after connecting successfully to PDB2:
Which two are true? (Choose two.)

  • A. The insert on USER2.DEPT is uncommitted.
  • B. The inserts on USER1.EMP were committed when the session inserted a row into USER2.DEPT.
  • C. The insert on USER2.DEPT is a recursive autonomous transaction by the child session and is committed.
  • D. The inserts on USER1.EMP remain uncommitted when the session connected to PDB2.
  • E. The inserts on USER1.EMP were rolled back when the session connected to PDB2.
  • F. The insert on USER2.DEPT fails because of the active transaction in the parent container.
  • G. The inserts on USER1.EMP were committed when the session connected to PDB2.

Answer: C,E

Oracle Data Redaction is active on the SCOTT.EMP table. You queried the table twice. SQL> SELECT ENAME, SAL, COMM, MGR, HIREDATE FROM EMP WHERE DEPTNO=30; SQL> SELECT ENAME, SAL, COMM, MGR, HIREDATE FROM EMP WHERE DEPTNO=30; Which is guaranteed to be true concerning the redaction policy?

  • A. PARTIAL redaction is active on the MGR column.
  • B. RANDOM redaction is active on the MGR column
  • C. FULL redaction is active on the SAL column
  • D. PARTIAL redaction is active of the HIREDATE column.
  • E. RANDOM redaction is active on the HIREDATE column

Answer: E


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