Free Access Oracle.1Z0-083.v2022-02-19.q163 Practice Test (Page 18)

Question 81

A user complains about poor database performance.
You want to verify if the user's session has waited for certain types of I/O activity.
Which view displays all waits waited on by a session at least once?

A.VSSESSION_EVENT

B.VSSESSION_WAIT_CLASS

C.V$SESSION_WAIT

D.VSSESSTAT

E.VSSESSION

Question 82

Which three are true about patchsets? (Choose three.)

A.They are installed via OPatch or OPatchAuto.

B.They are only released quarterly.

C.They can be applied in a rolling fashion for Clusterware and the databases.

D.A base release is not needed to install patchsets.

E.Installing a patchset is considered an "upgrade".

F.They can introduce new features.

Question 83

Which two are true about Oracle Flashback features? (Choose two.)

A.After a database is restored from flashback logs using the FLASHBACK DATABASE command, it is sometimes rolled forward using redo logs.

B.FLASHBACK TABLE can undrop a column.

C.FLASHBACK QUERY can retrieve REDO records from ONLINE and ARCHIVED REDO LOG files.

D.FLASHBACK DROP can undrop an index when undropping a table.

E.FLASHBACK VERSION QUERY can retrieve REDO records from ONLINE and ARCHIVED REDO LOG files.

Question 84

Which two are true about RMAN backups when using a media manager to write backups to tape when there are only two tape drives?

A.SBT tape compression and RMAN backup compression should be used in parallel.

B.Any backup written to the SBT device in this configuration can contain a maximum of two backup sets.

C.SBT tape compression can be used even if no RMAN compression is configured.

D.The SBT device should be configured to use parallelism 2 to allow both tape drives to be used simultaneously

E.Any backup set written to the SBT device in this configuration can contain a maximum of two backup pieces.

Question 85

Which four are true about duplicating a database using Recovery Manager (RMAN)? (Choose four.)

A.Duplication can be done by having the auxiliary database instance pull backup sets from the target database instance.

B.A connection to an auxiliary instance is always required.

C.A subset of the target database can be duplicated.

D.A new DBID is always created for the duplicated database.

E.A connection to the recovery catalog instance is always required.

F.A backup of the target database is always required.

G.Duplication can be done by having the target database instance push copies to the auxiliary database instance.

H.A connection to the target database instance is always required.

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