Free Access Oracle.1Z1-083.v2022-05-30.q253 Practice Test (Page 32)

Question 151

choose four Which four are true about performance-related Oracle tools?

A.The Active Session History (ASH) report is based on wait event samples.

B.SQL Performance Analyzer can suggest schema changes.

C.Database Replay always uses one replay client for all the original database sessions.

D.Database Replay always uses one replay client for each original database session.

E.The Automatic Database Diagnostic Monitor (ADDM) Compare Period report can compare two non-consecutive periods.

F.The Automatic Database Diagnostic Monitor (ADDM) Compare Period report can compare two consecutive periods.

G.SQL Performance Analyzer can identify regressed SQL statements.

Question 152

Automatic Shared Memory Management is disabled for one of your database instances.
Some SQL statements perform poorly due to excessive hard parse activity, thereby degrading performance.
What would be your next step?

A.Run the Memory Advisor for the shared pool.

B.Run the SQL Access Advisor.

C.Run the SQL Tunning Advisor.

D.Run the Memory Advisor for the System Global Area.

E.Run the Memory Advisor for the Program Global Area.

Question 153

Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.)

A.A snapshot copy PDB can be created from a stand-alone clone PDB.

B.A snapshot copy PDB depends on a storage snapshot which can be stored on any file system.

C.A PDB snapshot is always a full copy of the source PDB.

D.A PDB snapshot is always a sparse copy of the source PDB.

E.A PDB snapshot depends on a storage snapshot which can be stored on any file system.

F.A PDB snapshot depends on a storage snapshot which can only be stored on specific file systems.

G.A snapshot copy PDB depends on a storage snapshot which can only be stored on specific file systems.

Question 154

Which two are true about common objects? (Choose two.)

A.They can be created only in an application root.

B.They can exist in user-defined schemas only in application containers.

C.They can be extended data-linked in CDB$ROOT.

D.They can be created only in CDB$ROOT.

E.They can exist in CDB$ROOT and an application root.

F.They can be only metadata-linked in an application container.

Question 155

A container database (CDB) contains two pluggable databases PDB1 and PDB2.
The LOCAL_UNDO_ENABLED database property is set to FALSE in the CDB. Data file 24 of PDB2 was deleted and you need to restore and recover it.
The only RMAN backup that exists was created with the BACKUP DATABASE command while connected to CDB$ROOT.
Which three are true? (Choose three.)

A.Data file 24 can be recovered only while connected to PDB2.

B.Data file 24 can be restored only while connected to PDB2.

C.Data file 24 can be restored and recovered while connected to CDB$ROOT.

D.Data file 24 can be recovered while connected to CDB$ROOT.

E.Data file 24 can be recovered while connected to PDB2.

F.Data file 24 can be restored only while connected to CDB$ROOT.

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