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Oracle 1Z0-083 Exam Syllabus Topics:

Section	Objectives
Storage and Space Management	- Segment management - Tablespaces and datafiles
Performance Management	- Automatic Workload Repository (AWR) and diagnostics - SQL performance tuning
Database Backup and Recovery	- Database recovery techniques - RMAN configuration and backup strategies
Security Management	- Database auditing and encryption - User management and privileges
Database Architecture and Administration	- Oracle Database architecture components - Multitenant container database (CDB/PDB) concepts

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Oracle Database Administration II Sample Questions (Q97-Q102):

NEW QUESTION # 97
Which two are true about gathering optimizer statistics?

A. Executing dbms_stats.gather_database_stats while connected to cdb$root gathers object statistics only in cdbSroot.
B. Executing dbms_stats.gather_database_stats while connected to a PDBopened in read/write mode gathers object statistics for that PDB.
C. Executing dbms_stats.gather_database_stats while connected to cdb$root gathers object statistics in all open pluggable databases (PDBs).
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 PDBs except pdb$seed.

Answer: A,C

NEW QUESTION # 98
Examine these queries and their output:

An online RMAN backup of the CDB was taken an hour before Restore Point R1was created.
You want to recover PDB1 to Restore Point R1.
How do you achieve this?

A. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using RMAN while connected to PDB1.
B. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using RMAN while connected to CDB$ROOT.
C. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using SQL while connected to PDB1.
D. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using SQL while connected to CDB$ROOT.
E. This cannot be done due to the lack of a clean restore point.

Answer: B

Explanation:
In 19c, you can actually flashback a PDB from a restore point even if it's not clean:
When using restore points, you can perform a flashback database operation either to a CDB restore point, PDB restore point, PDB clean restore point, or PDB guaranteed restore point.
https://docs.oracle.com/en/database/oracle/oracle-database/19/bradv/rman-performing- flashback-dbpitr.html#GUID-C1215E86-9A7B-4EC9-9777-2A18BD627394

NEW QUESTION # 99
Which two are true about Oracle Optimizer Statistics, their use, and their collection?

A. The number of table rows is considered when evaluating the cost of accessing a table using an index.
B. Statistics collected using DBMS_ATATS always yield the best optimizer result.
C. The Statistics Advisor generates actions for all recommendations.
D. Index balanced B*Tree height is considered when evaluating the cost of using an index,
E. The Statistics Advisor can help recommend the best way to gather statistics.

Answer: A,C

NEW QUESTION # 100
Choose the best answer. Examine this configuration: 1. CDB1 is a container database. 2. DEFAULT_SHARING is METADATA.
3. APP_ROOT is an application root contained in CDB1. 4. APP_PDB1 is an application PDB contained in APP_ROOT. 5. COMPANYAPP is an application contained in APP_ROOT. 6. EMP is a common table created in APP_ROOT and all its application PDBs, created when version 1.0 of COMPANYAPP was installed. You execute these commands: $ sqlplus sys/ orac1e@localhost:1521/cdb1 as sysdba SQL> ALTER SYSTEM SET DEFAULT_SHARING=DATA; System altered. SQL> ALTER SESSION SET CONTAINER=app_root; Session altered. SQL> ALTER PLUGGABLE DATABASE APPLICATION companyapp BEGIN UPGRADE '1.0' TO '2.0'; pluggable database altered. SQL> ALTER TABLE emp ADD (sal NUMBER NOT NULL) ; Table altered. SQL> ALTER PLUGGABLE DATABASE APPLICATION companyapp END UPGRADE TO '2.0'; Pluggable database altered. SQL> ALTER SESSION SET CONTAINER=app_pdb1; Session altered. SQL> DESC emp; Name Null? Type --------------------------------------------------------------ENO NUMBER ENAME VARCHAR2 (20) SQL> SELECT * FROM emp; ENO ENAME ---------------------------------100 Alan 200 Ben SQL> ALTER PLUGGABLE DATABASE APPLICATION companyapp SYNC; What will be the outcome and why?

A. It will return an error because EMP.SAL is empty in APP_ROOT.
B. SAL will be added to APP_PDB1.EMP, with 0 in columns of existing rows.
C. SAL will be added to APP_PDB1.EMP, with NULLs in columns of existing rows.
D. It will return an error because EMP is not empty in APP_ROOT.
E. It will return an error because the SYNC operation is not allowed when constraints are added to common objects.

Answer: D

NEW QUESTION # 101
Examine these queries and their output:

After a system crash, an instance restart and an attempted opening of the PDBs result in:

Which two are true?

A. Data file 24 must be recovered while PDB2 is closed.
B. Data file 24 can be recovered while PDB2 is opened.
C. Data file 24 cannot be recovered while the CDB is opened.
D. Data file 24 must be recovered while the CDB is opened.
E. Data file 24 can be recovered while CDB$ROOT and PDB$SEED are opened.

Answer: B,E

NEW QUESTION # 102
......

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