Free Access Oracle.1Z1-083.v2022-05-30.q253 Practice Test (Page 19)

Question 86

Choose the best answer. Examine this configuration: 1. CDB1 is a container database. 2.
COMMON_USER_PREFIX is set to an empty string. 3. PDB1 is a pluggable database in CDB1. 4. APP1_ROOT is an application container in CDB1. 5. APP1_PDB1 is an application PDB in APP1_ROOT. You execute these commands: S sqlplus sys/oracle@localhost:1521/cdb1 as sysdba SQL> CREATE ROLE role1 CONTAINER=CURRENT; Which is true?

A.ROLE1 will be created only in CDB$ROOT and APP1_ROOT.

B.ROLE1 will be created in CDB$ROOT, PDB1, APP1_ROOT, and APP1_PDB1.

C.ROLE1 will be created only in CDB$ROOT.

D.It will return an error because creation of a local role is not allowed in CDB$ROOT.

E.It will return an error because common roles must start with C##.

Question 87

Which two are true about poorly performing SQL statements and their tuning in Oracle database instances?

A.SQL statements performing many physical I/Os can always have their performance improved by creating indexes.

B.SQL statements doing only logical reads never require tuning because they do no physical I/O.

C.The solution that best optimizes one SQL statement can degrade the performance of others.

D.SQL statements doing joins always do more physical I/O than single table queries.

E.Poorly performing SQL statements can be tuned automatically by the Oracle server.

Question 88

T schema owned by the RC12C user. The RCAT11 database contains an Oracle Database version 11g catalog schema owned by the RC11 user in which several databases are registered. Both the databases are open. You execute the RMAN commands: RMAN> CONNECT CATALOG rcl2c/passl2c@catdbl2c RMAN> IMPORT CATALOG rcll/pwdcatll@ractll Which two tasks are performed as part of the import?

A.All databases registered in the RC11 catalog are registered in the RC12C catalog.

B.Imported databases are unregistered from the RC11 catalog.

C.Databases from the RC12C catalog are implicitly unregistered if the RC11 catalog has registered databases with same name.

D.Local and global stored scripts that have the same name as existing scripts in the RC12C catalog are automatically renamed.

E.Recovery catalog is resynchronized with the control files of the registered databases.

Question 89

Choose three. Which three are true about the tools for diagnosing Oracle Database failure situations?

A.The Automatic Diagnostic Repository (ADR) has a separate home directory for each instance of each Oracle product that is installed and uses it.

B.Flashback commands help with repairing physical errors.

C.RMAN can always repair corrupt blocks.

D.The ADR can store metadata in an Oracle Database repository.

E.The Data Recovery Advisor uses the ADR.

F.The ADR command-line utility (ADRCI) can package incident information to send to Oracle Support.

Question 90

Choose two. Which two are true about monitoring waits for sessions and services?

A.V$SESSION_WAIT and V$SESSION both contain details of the event on which a waiting session is currently waiting.

B.V$SESSION_WAIT_CLASS displays waits broken down by wait class only for terminated sessions.

C.V$SESSION_EVENT displays all waits events for those events that have occurred at least once for sessions that have now terminated.

D.V$SESSION_WAIT and V$SESSION both contain details of the event on which a non-waiting session last waited.

E.V$SERVICE_EVENT displays wait counts for every wait event for each service even including counts of zero for waits that never occurred.

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