Free Access Oracle.1Z0-083.v2025-05-02.q283 Practice Test (Page 33)

Question 156

RMAN has just been connected to a target database and the recovery catalog database.
In which two cases would an automatic partial resynchronization occur between this target database's control file and the RMAN recovery catalog?

A.When any control file metadata for data file backups or image copies is now older than CONTROL_FILE_RECORD_KEEP_TIME.

B.When a new data file is added to a tablespace in a registered target database.

C.When a backup of the current SPFILE is created.

D.When the target is first registered.

E.When any control file metadata for archive log backups or image copies is now older than CONTROL_FILE_RECORD_KEEP_TIME.

Question 157

Which two are true about the Oracle Optimizer?

A.It can re-write a statement internally in order to generate a more optimal plan.

B.It always generates an index access operation when a statement filters on an indexed column with an equality operator.

C.It can automatically re-optimize execution plans that were detected to be sub-optimal when executing.

D.It ignores stale object statistics in the Data Dictionary.

E.It requires system statistics when generating SQL execution plans.

Question 158

Choose two. Which two are true about an Oracle gold image-based installation in Oracle 18c and later releases?

A.It uses a single RPM that automatically extracts and installs the Oracle Database software.

B.It can be used for both Oracle Database and Oracle Grid Infrastructure installation.

C.It does not require the setup wizard.

D.It can be used to install and upgrade Oracle Database for single-instance and cluster configurations.

E.It can only install and configure Oracle Database software. The database has to be created separately.

Question 159

Which two are true about gathering optimizer statistics? (Choose two.)

A.Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open PDBs except PDB$SEED.

B.Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to a PDB opened in read/write mode gathers object statistics for that PDB.

C.Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics only in CDB$ROOT.

D.System statistics can be gathered only while connected to CDB$ROOT.

E.Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open pluggable databases (PDBs)

Question 160

Which two are true about SQL Performance Analyzer (SPA)? (Choose two.)

A.It offers fine-grained analysis of all the SQL statements in the analysis task as a group.

B.SQL statements that were originally run concurrently are run concurrently by SPA.

C.It is integrated with the SQL Access Advisor.

D.It provides before and after execution statistics for each SQL statement in the analysis task

E.It predicts the impact of system changes on SQL workload response time.

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Question 156

Question 157

Question 158

Question 159

Question 160

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