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Oracle Database Administration II Sample Questions (Q269-Q274):

NEW QUESTION # 269
Which two are true about gathering optimizer statistics? (Choose two.)

A. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to a PDB opened in read/write mode gathers object statistics for that PDB.
B. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open PDBs except PDB$SEED.
C. System statistics can be gathered only while connected to CDB$ROOT.
D. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics only in CDB$ROOT.
E. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open pluggable databases (PDBs)

Answer: A,E

Explanation:
Explanation
https://mikedietrichde.com/2016/10/21/gather-fixed-objects-stats-in-pdbs-as-well/#:~:text=Yes%2C%20you'll%2
.

NEW QUESTION # 270
Choose three. Which three are true about Audit policies in container databases (CDBs)?

A. All audit records are written to the audit trail in CDB$ROOT .
B. A common unified audit policy can be created at the application root level.
C. An application PDB cannot have a local audit policy.
D. Application-common unified audit policies defined in an application root must be manually synchronized by each application PDB contained in the application root.
E. A common unified audit policy can be created at the CDB level.
F. Fine-grained auditing policies defined in an application root must be manually synchronized by each application PDB contained in the application root.

Answer: B,D,E

NEW QUESTION # 271
Examine this output:

Which two are true? (Choose two.)

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

Answer: A,F

Explanation:
A). Correct as then a PDB will get assigned the default directive with parallel_server_limit set to 0
B). Correct as parallel_server_limit is not specified for PDB3 and it defaults to 100 Quote:
https://docs.oracle.com/database/121/ADMIN/dbrm.htm#ADMIN14008
"If PARALLEL_SERVER_LIMIT is not specified, then it defaults to 100%."
C). Incorrect. A PDB can use more resources:
Quote from
https://docs.oracle.com/database/121/ADMIN/cdb_dbrm.htm#ADMIN13777
"However, any PDB can use more than the guaranteed amount of a resource if there is no resource contention."
D). Incorrect. Shares is a minimum guaranteed value. But a PDB can use more as explained above in C.
E). Incorrect. Nothing confirms that there are only 3 PDBs attached. There may be others using the default pdb directive. Then the share for PDB2 is not 20%
F). Incorrect. parallel_server_limit is an upper limit.

NEW QUESTION # 272
Which three can be done using Oracle Database Configuration Assistant (DBCA) starting from Oracle Database 19c? (Choose three.)

A. relocating a remote container database in interactive mode
B. cloning a remote pluggable database in silent mode
C. relocating a remote container database in silent mode
D. relocating a remote pluggable database in interactive mode
E. cloning a remote container database in interactive mode
F. relocating a remote pluggable database in silent mode
G. cloning a remote container database in silent mode

Answer: B,F,G

NEW QUESTION # 273
Choose three. Which three are true about corrupted data blocks and their recovery in an Oracle Database?

A. If a row lock is held by a nonexistent transaction, the block containing the row is logically corrupt.
B. A media corrupt block is one where the block is not formatted correctly.
C. The ANALYZE TABLE VALIDATE STRUCTURE CASCADE command verifies that each table row has an index entry pointing to it.
D. DB_LOST_WRITE_PROTECT=TYPICAL causes extra logging overhead on the standby database.
E. DB_BLOCK_CHECKING=TRUE causes a check sum to be added to each data block to help detect physical or media corruption.
F. If a row lock is held by a nonexistent transaction, the block containing the row is media corrupt.

Answer: A,C,D

NEW QUESTION # 274
......

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