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To prepare for the Oracle 1Z0-083 Certification Exam, candidates should have a thorough understanding of Oracle database administration, including the ability to install and configure Oracle databases, manage backup and recovery operations, manage database security, and tune database performance. Candidates should also have experience working with Oracle databases in a production environment.

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Oracle 1Z0-083 (Oracle Database Administration II) Certification Exam is a professional-level certification offered by Oracle Corporation. 1Z0-083 exam is designed for individuals who are interested in becoming certified database administrators. 1Z0-083 exam focuses on advanced database administration topics such as managing database security, backup and recovery, performance tuning, and database upgrades. Passing 1Z0-083 Exam is a testament to an individual's expertise in Oracle database administration.

Oracle Database Administration II Sample Questions (Q48-Q53):

NEW QUESTION # 48
Choose the best answer. Examine this configuration:
1. CDB1 is a container database.
2. There are several pluggable databases (PDBs) in CDB1.
5. Each PDB has several tables with referential integrity constraints.
6. FLASHBACK DATABASE is ON.
7. UNDO RETENTION GUARANTEE is enabled.
Multiple undesired multitable changes were made in all the PDBs.
Which method can be used to undo the changes using a single command?

A. flashback database
B. restore and recover database
C. flashback table
D. flashback transaction
E. flashback table and transaction

Answer: A

NEW QUESTION # 49
On the 10th of August, you implement an incremental database backup strategy and configure a recovery window of five days.
Level 0 backups are taken on the 10th, 17th, and 24th of August. Differential level 1 incremental backups are taken daily between the level 0 backups.
Today is the 26th of August.
Which backups will be obsolete?

A. all backups prior to 20th of August
B. all backups prior to 17th of August
C. all backups prior to 24th of August
D. all backups prior to 22nd of August
E. all backups prior to 10th of August

Answer: B

NEW QUESTION # 50
Which three are true about Automatic Workload Repository (AWR)? (Choose three.)

A. By default, AWR snapshots are retained for 7 days.
B. The taking of AWR snapshots can be disabled.
C. By default, AWR snapshots are taken every 60 minutes.
D. Its collection level is determined by the value of the STATISTICS_LEVEL database parameter.
E. AWR data is stored in the SYSTEM tablespace.

Answer: B,C,D

NEW QUESTION # 51
Which two are true about unplugging an application container from a container database and plugging it into a different container database?

A. Application PDBs In the applic tion container must be unplugged before the application root Is unplugged.
B. The application root of an application container should be plugged Into the other CDB before Its application PDBs are plugged in.
C. It requires only local undo mode in the database where the application container will be unplugged.
D. Plugging the application root into a different CDB plugs In all its application PDBs.
E. It requires local undo mode in both container databases.
F. Unplugging the application root from a CDB unplugs all its application PDBs.

Answer: A,B

NEW QUESTION # 52
You issued this command:
RMAN> BACKUP RECOVERY AREA FORCE;
Which three are true? (Choose three.)

A. All files in any previous FRA that have been backed up already, are backed up.
B. All files in the current FRA that have been backed up already, are backed up.
C. All files in the current fast recovery area (FRA) that have not yet been backed up, are backed up.
D. All Oracle recovery files normally written to the FRA and which have been backed up already to in any previous FRA, are backed up.
E. All Oracle recovery files normally written to the FRA and which have not yet been backed up, are backed up.
F. All files in any previous FRA that have not yet been backed up, are backed up.
G. All Oracle recovery files normally written to the FRA and which have been backed up already to the current FRA, are backed up.

Answer: D,E,G

Explanation:
By default BACKUP RECOVERY AREA ; command enables backup optimization (do not backup files which are already backed up and not changed since last backup) with FORCE clause backup optimization OFF, i.e. backup oracle all recovery files from current FRA and all Previous FRA whether they are previously backed up or not backed up.

NEW QUESTION # 53
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