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Oracle 1Z1-083 (Oracle Database Administration II) Certification Exam is a professional certification exam designed for individuals seeking to advance their career in database administration. 1Z0-083 Exam is targeted at database administrators, database developers, and technical support professionals who want to prove their competency in Oracle database administration.

Oracle Database Administration II Sample Questions (Q170-Q175):

NEW QUESTION # 170
Which three are true about Optimizer Statistics Advisor? (Choose three.)

A. It always analyzes all schemas in the database.
B. It can recommend changes to improve the statistics gathering process.
C. It is part of the DBMS_STATS package.
D. It runs automatically every night by default.
E. It is part of the DBMS_ADVISOR package.
F. It can be run only manually.

Answer: B,C,F

Explanation:
Explanation
https://mikedietrichde.com/2017/08/22/oracle-optimizer-statistics-advisor-in-oracle-database-12-2-0-1/
https://www.oracle.com/technetwork/database/bi-datawarehousing/twp-bp-for-stats-gather-19c-5324205.pdf

NEW QUESTION # 171
Which three actions are performed by the Oracle Preinstallation RPM, oracle-database-server-xxxx- preinstall, for Oracle Grid Infrastructure, where xxxx is the Oracle version and release? (Choose three.)

A. performing checks to ensure minimum configuration requirements for Oracle Grid Infrastructure are met
B. creating the OSDBA (dba) group
C. creating the oracleOS user
D. creating the grid OS user
E. configuring the OS for Oracle Automatic Storage Management shared storage access
F. creating thte oraInventory (oinstall) group

Answer: B,E,F

Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E11882_01/install.112/e41961/prelinux.htm#CWLIN2932

NEW QUESTION # 172
Examine this configuration: While CDB1 is open, '/u02/app/oracle/fast_recover_area/cdb1/CDB1/ controlfile02.ctl'is accidentally deleted. To recover from this critical failure, you execute these commands:
What will be the outcome?

A. It will fail because there is no autobackup of the controlfiles.
B. It will create '/u01/app/oralce/oradata/CDB1/controlfile/controlfile02.ctl'.
C. It will create '$ORACLE_HOME/dbs/cdb1/CDB1/controlfile02.ctl'
D. It will create '/u01/app/oracle/product/12.2.0.1/db_1/dbs/snapcf_cdb1control02.ctl'.
E. It will re-create '/u02/app/oracle/fast_recover_area/cdb1/CDB1/controlfile02.ctl'

Answer: E

NEW QUESTION # 173
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 joins always do more physical I/O than single table queries.
C. SQL statements doing only logical reads never require tuning because they do no physical I/O.
D. The solution that best optimizes one SQL statement can degrade the performance of others.
E. Poorly performing SQL statements can be tuned automatically by the Oracle server.

Answer: D,E

NEW QUESTION # 174
After implementing full Oracle Data Redaction, you change the default value for the number data type as follows:
SQL> SELECT NUMBER_VALUE FROM REDACTION_VALUES_FOR_TYPE_FULL;
NUMBER_VALUE
-------------------------
SQL> EXEC DBMS_REDACT.UPDATE_FULL_REDACTI0N_VALUES(-1)
PL/SQL procedure successfully completed.
SQL> select number_value from redaction_values_for_type_full;
NUMBER VALUE
------------------------
After changing the value, you notice that FULL redaction continues to redact numeric data with a zero.
What must you do to activate the new default value for numeric full redaction?

A. Restart the database instance.
B. Re-enable redaction policies that use FULL data redaction.
C. Re-create redaction policies that use FULL data redaction.
D. Re-connect the sessions that access objects with redaction policies defined on them.
E. Flush the shared pool.

Answer: A

Explanation:
About Altering the Default Full Data Redaction Value
You can alter the default displayed values for full Data Redaction polices. By default, 0 is the redacted value when Oracle Database performs full redaction (DBMS_REDACT.FULL) on a column of the NUMBER data type. If you want to change it to another value (for example, 7), then you can run the DBMS_REDACT.UPDATE_FULL_REDACTION_VALUES procedure to modify this value.
The modification applies to all of the Data Redaction policies in the current database instance.
After you modify a value, you must restart the database for it to take effect.

NEW QUESTION # 175
......

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