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Oracle 1z0-083 Exam Sample Questions


Question # 1

How do you configure a CDB for local undo mode?

A.

Open the CDB instance in upgrade mode. In cdb$root, execute alter database local undo on, and then
restart the CDB instance

B.

Open the CDB in read-only mode. In cdb$root, execute alter database local undo on, and then change
the CDB to read/write mode

C.

Open the CDB instance in restricted mode. In cdb$root, execute alter database local undo on. create an
undo tablespace in each PDB, and then restart the CDB instance

D.

Open the CDB instance in restricted mode. In cdb$root, drop the undo tablespace. Execute alter
database local undo on in each PDB, and then restart the CDB instance.

E.

Open the CDB instance in upgrade mode. In each PDB, execute alter database local undo on, create an
undo tablespace, and then restart the CDB instance.



D.

Open the CDB instance in restricted mode. In cdb$root, drop the undo tablespace. Execute alter
database local undo on in each PDB, and then restart the CDB instance.





Question # 2

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.

Increase the size of tape I/O buffers

B.

Disable FORCE LOGGING for the database.

C.

Increase the size of the database buffer cache

D.

Enable asynchronous disk I/O.

E.

Increase the level of RMAN multiplexing



C.

Increase the size of the database buffer cache


E.

Increase the level of RMAN multiplexing





Question # 3

Which three are true in Oracle 19c and later releases? (Choose three.)

A.

If the password file location changes, then the new location is used automatically by the Oracle Server.

B.

Schema Only accounts can be granted administrator privileges

C.

All the Oracle-supplied accounts are Schema Only accounts.

D.

Privilege Analysis is included in Oracle Enterprise Edition and no longer requires Database Vault.

E.

Unified Auditing can be configured to audit only events that are issued indirectly by an audited user.



B.

Schema Only accounts can be granted administrator privileges


C.

All the Oracle-supplied accounts are Schema Only accounts.


D.

Privilege Analysis is included in Oracle Enterprise Edition and no longer requires Database Vault.





Question # 4

Which two are true about instance recovery? (Choose two.)

A.

It is not possible if an archived log is missing.

B.

It is performed automatically after the database is opened; however, blocks requiring recovery are not
available until they are recovered

C.

Setting FAST_START_MTTR_TARGET to a lower value reduces instance recovery time by causing
dirty buffers to be written to disk more frequently, thereby reducing the number of I/Os needed during
instance recovery.

D.

It is performed by the Recovery Writer (RVWR) background process.

E.

Setting FAST_START_MTTR_TARGET to a higher value reduces instance recovery time bycausing
the log writer to write more frquently, thereby reducing the number of I/Os needed during instance
recovery.



E.

Setting FAST_START_MTTR_TARGET to a higher value reduces instance recovery time bycausing
the log writer to write more frquently, thereby reducing the number of I/Os needed during instance
recovery.






Question # 5

A container database called CDB1 is OMF-enabled.
PDB_FILE_NAME_CONVERT is not configured in CDB1. PDB1 was unplugged from CDB1 earlier in the
week. Examine this command, which will be executed in CDB1:
CREATE PLUGGABLE DATABASE pdb1
USING ‘/u01/app/oracle/oradata/pdb1.xml’
SOURCE_FILE_NAME_CONVERT =
(‘/u01/app/oracle/oradata/’, ‘/u02/app/oracle/oradata/’);
Which two are true? (Choose two.)

A.

PDB1 data files already exist in the correct location.

B.

DBMS_PDB.CHECK_PLUG_COMPATIBILITY must be run in CDB1 before executing the command.

C.

PDB_FILE_NAME_CONVERT must be set before executing the command.

D.

/u01/app/oracle/oradata/pdb1.xml does not contain the current locations of data filesfor PDB1.

E.

PDB1 must be dropped from CDB1.



C.

PDB_FILE_NAME_CONVERT must be set before executing the command.


D.

/u01/app/oracle/oradata/pdb1.xml does not contain the current locations of data filesfor PDB1.




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