Oracle Oracle Certifications 1Z0-063 Questions & Answers

• Question 71:

  Examine the commands executed in the root container of your multitenant container database (CDB) that

  has multiple pluggable databases (PDBs):

  SQL> CREATE USER c##a_admin IDENTIFIED BY orcl123;

  SQL> CREATE ROLE c##role1 CONTAINER=ALL;

  SQL> GRANT CREATE VIEW TO C##roleI CONTAINER=ALL;

  SQL> GRANT c##role1 TO c##a_admin CONTAINER=ALL;

  SQL> REVOKE c##role1 FROM c##a_admin;

  What is the result of the revoke command?

  A. It executes successfully and the c##role1 role is revoked from the c##a_admin user only in the root container.

  B. It fails and reports an error because the container=all clause is not used.

  C. It executes successfully and the c##rocl1 role is revoked from the c##a_admin user in the root database and all the PDBs.

  D. It fails and reports an error because the container=current clause is not used.

  Correct Answer: B

• Question 72:

  Examine the command:

  SQL> RECOVER DATABASE USING BACKUP CONTROLFILE UNTIL CANCEL;

  In which two scenarios is this command required? (Choose two.)

  A. The current online redo log file is missing.

  B. A data file belonging to a noncritical tablespace is missing.

  C. All the control files are missing.

  D. The control file backup is older than the database backup.

  E. All the data files are missing.

  Correct Answer: CD

  Reference: http://searchoracle.techtarget.com/answer/Recover-database-using-backup-controlfile-until-cancel

• Question 73:

  Which two are prerequisites for setting up Flashback Data Archive? (Choose two.)

  A. Fast Recovery Area should be defined.

  B. Undo retention guarantee should be enabled.

  C. Supplemental logging should be enabled.

  D. Automatic Undo Management should be enabled.

  E. All users using Flashback Data Archive should have unlimited quota on the Flashback Data Archive tablespace.

  F. The tablespace in which the Flashback Data Archive is created should have Automatic Segment Space Management (ASSM) enabled.

  Correct Answer: DF

• Question 74:

  The environmental variable oracle_Base is set to /u01/app/oracle and oracle_home is set to /u01/app/ oracle/product/12.1.0/db 1.

  You want to check the diagnostic files created as part of the Automatic Diagnostic Repository (ADR). Examine the initialization parameters set in your database.

  NAME TYPE VALUE

  audit_file_dest string /u01/app/oracle/admin/eml2rep/adump background_dump_dest string core_dump_dest string db_create_file_dest string db_recovery_file_dest string /u01/app/oracle/fast_recovery_area diagnostic_dest string

  What is the location of the ADR base?

  A. It is set to /u01/app/oracle/product:/12.1.0/db_1/log.

  B. It is set to /u01/app/oracle/admin/enl2randp/adump.

  C. It is set to /u01/app/oracle.

  D. It is set to /u01/app/oracle/flash_recovery_area.

  Correct Answer: C

  http://docs.oracle.com/cd/B28359_01/server.111/b28310/diag001.htm#ADMIN11008

  The Automatic Diagnostic Repository (ADR) is a directory structure that is stored outside of the database.

  It is therefore available for problem diagnosis when the database is down. The ADR root directory is known

  as ADR base. Its location is set by the DIAGNOSTIC_DEST initialization parameter. If this parameter is

  omitted or left null, the database sets DIAGNOSTIC_DEST upon startup as follows:

  If environment variable ORACLE_BASE is set, DIAGNOSTIC_DEST is set to the directory designated by

  ORACLE_BASE.

  If environment variable ORACLE_BASE is not set, DIAGNOSTIC_DEST is set to ORACLE_HOME/log.

• Question 75:

  A complete database backup to media is taken for your database every day. Which three actions would you take to improve backup performance? (Choose three.)

  A. Set the backup_tape_io_slaves parameter to true.

  B. Set the dbwr_io_slaves parameter to a nonzero value if synchronous I/O is in use.

  C. Configure large pool if not already done.

  D. Remove the rate parameter, if specified, in the allocate channel command.

  E. Always use RMAN compression for tape backups rather than the compression provided by media manager.

  F. Always use synchronous I/O for the database.

  Correct Answer: BCD

  Reference: http://docs.oracle.com/cd/B19306_01/backup.102/b14191/rcmtunin.htm

• Question 76:

  For which three pieces of information can you use the RMAN list command? (Choose three.)

  A. stored scripts in the recovery catalog

  B. available archived redo log files

  C. backup sets and image copies that are obsolete

  D. backups of tablespaces

  E. backups that are marked obsolete according to the current retention policy

  Correct Answer: ABD

  Reference: http://docs.oracle.com/cd/B19306_01/backup.102/b14192/bkup007.htm http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmreprt.htm#BRADV89585 The primary purpose of the LIST command is to list backup and copies. For example, you can list: ?Backups and proxy copies of a database, tablespace, datafile, archived redo log, or control file ?Backups that have expired ?Backups restricted by time, path name, device type, tag, or recoverability ?Archived redo log files and disk copies

• Question 77:

  You notice performance degradation in your production Oracle 12c database. You want to know what caused this performance difference.

  Which method or feature should you use?

  A. Database Replay

  B. Automatic Database Diagnostic Monitor (ADDM) Compare Period report

  C. Active Session History (ASH) report

  D. SQL Performance Analyzer

  Correct Answer: B

• Question 78:

  Which three statements are true about a job chain? (Choose three.)

  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.

  Correct Answer: ABE

  Reference: http://docs.oracle.com/cd/B28359_01/server.111/b28310/scheduse009.htm#ADMIN12459

• Question 79:

  Because of logical corruption of data in a table, you want to recover the table from an RMAN backup to a specified point in time.

  Examine the steps to recover this table from an RMAN backup:

  1.

  Determine which backup contains the table that needs to be recovered.

  2.

  Issue the recover table RMAN command with an auxiliary destination defined and the point in time specified.

  3.

  Import the Data Pump export dump file into the auxiliary instance.

  4.

  Create a Data Pump export dump file that contains the recovered table on a target database. Identify the required steps in the correct order.

  A. 1, 4, 3

  B. 1, 2

  C. 1, 4, 3, 2

  D. 1, 2, 4

  Correct Answer: B

  Reference: https://docs.oracle.com/database/121/BRADV/rcmresind.htm#BRADV689

• Question 80:

  As part of a manual upgrade process, after installing the software for Oracle Database 12c and preparing the new Oracle home, you shut down the existing single-instance database.

  Which step should you perform next to start the upgrade of the database?

  A. Start up the database instance by using the new location of the server parameter file and run the catuppst.sqi script to generate informational messages and log files during the upgrade.

  B. Start up the database instance by using the new location of the server parameter file and run the cact1.pl script from the new Oracle home to use parallel upgrade options that reduce down time.

  C. Start up the database instance by using the STARTUP UPGRADE command and gather fixed object statistics to minimize the time needed for recompilation.

  D. Start up the database instance by using the STARTUP UPGRADE command, which opens the existing database, and then performs additional upgrade operations.

  Correct Answer: B