Free Access Oracle.1z0-062.v2022-06-21.q305 Practice Test (Page 30)

Question 141

Which two statements are true concerning the Resource Manager plans for individual pluggable databases (PDB plans) in a multitenant container database (CDB)? (Choose two.)

A.If no PDB plan is enabled for a pluggable database, then all sessions for that PDB are treated to an equal degree of the resource share of that PDB.

B.In a PDB plan, subplans may be used with up to eight consumer groups.

C.If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups across all PDBs in the CDB.

D.If no PDB plan is enabled for a pluggable database, then the PDB share in the CDB plan is dynamically calculated.

E.If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups based on the shares provided to the PDB in the CDB plan and the shares provided to the consumer groups in the PDB plan.

Question 142

Identify two prerequisites for configuring Enterprise Manager Database Express (EM Express).

A.Use the DBMS_XDB_CONFIG.SETHTTPPORT procedure to configure a port number for Oracle HTTP Server.

B.Create a SYSMANuser with the SYSDBAprivilege as an administrator for EM Express.

C.Grant the APEX_PUBLIC_USER role to the SYSMANuser.

D.Install Oracle HTTP Server.

E.Configure at least one dispatcher for the TCP/IP protocol.

Question 143

Your database is open in read/write mode and multiple users are connected to the database instance.
You execute the following command:
SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION;
What would be the effect on current sessions?

A.They are not affected.

B.They are terminated immediately.

C.They are terminated after completing the transaction.

D.They are not terminated but may only issue queries.

Question 144

You performed an incremental level 0 backup of a database:
RMAN > BACKUP INCREMENTAL LEVEL 0 DATABASE;
To enable block change tracking after the incremental level 0 backup, you issued this command:
SQL > ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE
'/mydir/rman_change_track.f';
To perform an incremental level 1 cumulative backup, you issued this command:
RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;
Which three statements are true?

A.Backup change trackingwill sometimes reduce I/O performed during cumulative incremental backups.

B.The change tracking file must always be backed up when you perform a full database backup.

C.Block change tracking will always reduce I/O performed during cumulative incrementalbackups.

D.More than one database block may be read by an incremental backup for a change made to a single block.

E.The incremental level 1 backup that immediately follows the enabling of block change tracking will not read the change tracking file to discover changed blocks.

Question 145

Which three statements are true about checkpointing? (Choose three.)

A.It ensures that all dirty buffers are written to data files during consistent shutdown.

B.It reduces the time required for recovery in case of an instance failure.

C.It prompts the Checkpoint (CKPT) process to write data to the data files and redo information to the online redo log files.

D.It prompts the Database Writer (DBWn) process to write checkpoint information into data file headers and the control file.

E.Frequent thread checkpoints can degrade database performance.

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