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NEW QUESTION 27
A container database (CDB) contains two pluggable databases PDB1 and PDB2.
The local_undo_enabled database property is set to false in the CDB.
Data file 24 of PDB2 was deleted and you need to restore and recover it.
The only RMAN backup that exists was created with the backup database command while connected to CDB$ROOT.
Which three are true?

• A. Data file 24 can be restored only while connected to CDB$ROOT.
• B. Data file 24 can be recovered while connected to PDB2.
• C. Data file 24 can be restored only while connected to PDB2.
• D. Data file 24 can be recovered while connected to CDB$ROOT.
• E. Data file 24 can be restored and recovered while connected to CDB$ROOT.
• F. Data file 24 can be recovered only while connected to PDB2.

Answer: A,B,F

 

NEW QUESTION 28
Which two are true about Oracle instance recovery? (Choose three.)

• A. Recovery begins from the last checkpoint position that was recorded in the control file by the checkpoint process (CKPT).
• B. Recovery reads redo until the end of the redo thread. SMON rolls back any dead transactions, and then the datanase is opened.
• C. Recovery begins from the last checkpoint position that was calculated by the Database Writer before instance failure.
• D. Recovery begins from the beginning of the CURRENT redo log group.
• E. Recovery begins from the start of any ACTIVE redo log group or the start of the CURRENT log group if no other group is ACTIV
• F. Recovery reads redo until the end of the redo thread, and then opens the database. SMON then rolls back any dead transactions.

Answer: B,C,F

 

NEW QUESTION 29
Which three are true about requirements for various flashback operations?

• A. flashback drop requires undo to retrieve all versions of a row that existed between two points in time.
• B. flashback transaction query requires undo to retrieve all versions of a row that existed between two points in time.
• C. flashback version query requires undo to retrieve all versions of a row that existed between two points in time.
• D. flashback drop requires that the recyclebin parameter be set to on.
• E. flashback version query requires that the recyclebin parameter be set to on.
• F. flashback data archive requires undo to store all versions of all rows of a table being tracked.

Answer: A,C,F

 

NEW QUESTION 30
Your SALES_ROOT application container has two application PDBs.
The SALES_APP application has a common table, FIN.REVENUE, in the two PDBs.
Examine this query and its output:

Which two are true? (Choose two.)

• A. The REVENUE table must be a list-partitioned table.
• B. The CONTAINERS clause cannot be used in queries on the REVENUE table.
• C. A container map exists for the REVENUE table, but is not enabled.
• D. The MAPTABLE tables defines a logical partition key on a commonly used column for the REVENUE table.
• E. The MAPTABLE table is a metadata-linked table.
• F. The REVENUE table partitions are not pruned across the PDBs automatically.

Answer: C,D

 

NEW QUESTION 31
Which three are true about RMAN archival backups with the RESTORE POINT clause? (Choose three.)

• A. Use of a recovery catalog is always required to support the creation and use of archival backups.
• B. They are never considered obsolete by RMAN.
• C. Archive logs are retained if they are necessary to allow the database to be recovered to a consistent state when an archival backup is restored.
• D. The ARCHIVAL attribute for a backup overrides the RMAN retention policy.
• E. They can optionally be written to a fast recovery area (FRA).
• F. The SPFILE is included in the archival backup.
• G. All archive logs are retained after an archival backup is taken, until the next archival backup is taken of the same database.

Answer: E,F,G

 

NEW QUESTION 32
Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.)

• A. A PDB snapshot depends on a storage snapshot which can be stored on any file system.
• B. A snapshot copy PDB depends on a storage snapshot which can be stored on any file system.
• C. A PDB snapshot is always a sparse copy of the source PDB.
• D. A snapshot copy PDB depends on a storage snapshot which can only be stored on specific file systems.
• E. A PDB snapshot depends on a storage snapshot which can only be stored on specific file systems.
• F. A snapshot copy PDB can be created from a stand-alone clone PDB.
• G. A PDB snapshot is always a full copy of the source PDB.

Answer: D,F

 

NEW QUESTION 33
Which three are true about Recovery Manager (RMAN) in Oracle Database 19c and later releases?

• A. It Is always possible for RMAN to connect to a pluggable database as a target if any RMAN Catalog is used.
• B. A Virtual Private Catalog used to register a container database can be created in a non-container database.
• C. A Virtual Private Catalog used to register a container database can be created in a pluggable database.
• D. A Virtual Private Catalog used to register a container database must be created in a pluggable database.
• E. It Is always possible for RMAN to connect to a pluggable database as a target.
• F. It is only possible for RMAN to connect to a pluggable database as a target if an RMAN Virtual Private Catalog is used.

Answer: A,B,C

 

NEW QUESTION 34
Which two are true about OS groups and users for Oracle Grid Infrastructure and the Oracle Relational Database Management System (RDBMS)? (Choose two.)

• A. The Oracle Grid Infrastructure owner must have OSOPER, OSBACKUPDBA, and OSKMDBA as secondary groups.
• B. The Oracle Grid Infrastructure owner owns Oracle Restart and Oracle Automatic Storage Management binaries.
• C. The same OSDBA group must be used for Automatic Storage Management and the Oracle Database.
• D. The Oracle Grid Infrastructure installation must be owned by the grid user.
• E. The primary group for the Oracle Grid Infrastructure and Oracle Database owners must be the Oracle Inventory group.
• F. By default, members of the OSASM group can access Automatic Storage Management and RDBMS instances.

Answer: A,C

 

NEW QUESTION 35
Which two are true about changing the LOCAL_UNDO_ENABLEDproperty to false in a CDB? (Choose two.)

• A. After the change, only one undo tablespace can exist in CDB$ROOT.
• B. After the change, each existing PDB has to be reopened for the new undo mode to take effect.
• C. After the change, any user with the required privilege can create an undo tablespace in the PDBs.
• D. After the change, only a common user with the required privilege can create an undo tablespace in CDB&ROOT.
• E. Undo tablespaces existing in PDBs must be dropped before the change.
• F. Any new PDB and existing PDBs are automatically configured to use the default undo tablespace in CDB$ROOT.

Answer: C,D

Explanation:
Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/18/multi/creating-and-configuring-a- cdb.html#GUID-12ADA04D-F81D-4579-A68C-0958CC7D6C2F

 

NEW QUESTION 36
Which three actions are performed by Database Upgrade Assistant (DBUA)? (Choose three.)

• A. It sets all user tablespaces to "read-only" before starting the upgrade.
• B. It empties the RECYCLE BIN.
• C. It performs prerequisite checks to verify if the Oracle database is ready for upgrade.
• D. It increases tablespace size, if required, to meet upgrade requirements.
• E. It removes the AUDSYS schema and the AUDIT_ADMIN and AUDIT_VIEWER roles
• F. It recompiles all stored PL/SQL code by using utlrp.sql.

Answer: C,D,F

Explanation:
Reference:
https://oracle-base.com/articles/12c/upgrading-to-12c

 

NEW QUESTION 37
Which three are true about Database Point-in-Time Recovery?

• A. The database must be in archivelog mode.
• B. The database must be in mount state when performing Database Point-in-Time Recovery.
• C. Database Point-in-Time Recovery is performed by the Managed Recovery Process (MRP)
• D. The target point for the recovery must be specified as a time or System Change Number (SCN).
• E. The database must be open resetlogs after Database Point-in-Time Recovery.
• F. The database must have flashback database on to perform Database Point-in-Time Recovery.

Answer: A,D,E

 

NEW QUESTION 38
Which two are true about automatic block repair? (Choose two.)

• A. Real-Time Query must be enabled on a physical standby database for automatic block repair to be done on its primary database.
• B. Real-Time Query must be enabled on a physical standby database for automatic block repair to be done on that physical standby database.
• C. Automatic block repair can repair blocks with no standby database if DB_BLOCK_CHECKING = TRUE.
• D. It is not possible for media corrupt blocks.
• E. Real-Time Query must be enabled on a primary database for automatic block repair to be done on any of its physical standby databases.

Answer: B,E

 

NEW QUESTION 39
A database is configured in archivelog mode.
Full RMAN backups are taken daily and no backup to trace has been taken of the control file.
A media failure has occurred.
In which two scenarios is complete recovery possible?

• A. after losing an archived log from before the most recent backup
• B. when any archived log from, before, or after the most recent backup is corrupt
• C. after losing an archived log from after the most recent backup
• D. after losing the system tablespace
• E. after losing all copies of the control file

Answer: A

 

NEW QUESTION 40
Which two are true about instance recovery?

• A. It is not possible if an archived log is missing.
• B. Setting fast_start_mttr_target to a lower value reduces instance recovery time by causing dirty buffers to be written to disk more frequently, thereby reducing the number of I/Os needed during instance recovery.
• C. It is performed automatically after the database is opened; however, blocks requiring recovery are not available until they are recovered.
• D. It is performed automatically while the database remains in mount state. Then the database is opened.
• E. Setting fast_start_mttr_target to a higher value reduces instance recovery time by causing the log writer to write more frequently, thereby reducing the number of I/Os needed during instance recovery.
• F. It is performed by the Recovery Writer (rvwr) background process.

Answer: A,F

 

NEW QUESTION 41
Which two are true about creating RMAN backups for an Oracle container database?

• A. The backup pluggable database command can be used to back up cdb$root.
• B. The backup database plus archivelog command will back up archive logs when RMAN is connected to a PDB.
• C. spfile backups can be created while connected to an application root PDB.
• D. The backup database command will create a pluggable database (PDB) backup when RMAN is connected to a PDB.
• E. Tablespaces from different PDBs with identical names must be backed up by connecting RMAN separately to each PDB to back up the tablespaces.

Answer: B,D

 

NEW QUESTION 42
Which three are true about using Database Upgrade Assistant (DBUA) to upgrade a database? (Choose three.)

• A. All pluggable databases are automatically upgraded as part of a container database upgrade.
• B. A whole database backup must exist before upgrade
• C. The Pre-Upgrade Information Tool script is executed by DBUA.
• D. DBUA must be launched from the target Oracle Home.
• E. Multiple databases with the same ORACLE_HOME can be upgraded simultaneously.
• F. The database must be opened in read-only mode.

Answer: A,B,C

 

NEW QUESTION 43
The HR_ROOT application container must support the execution of a query on a table shared by application local PDBs PDB1 and PDB2, and remote PDB PDB3.
Which three are true? (Choose three.)

• A. A proxy PDB must exist in the application root in the remote CDB.
• B. The HR_ROOT replica must exist in the remote CDB.
• C. PDB3's application root replica must exist in the local CDB.
• D. A proxy PDB must exist in the application root in the local CDB.
• E. A database link must exist in the remote CDB referring to the local CDB.
• F. A database link must exist in the local CDB root referring to the remote CDB.

Answer: B,D,E

 

NEW QUESTION 44
Examine these queries and their output:

An online RMAN backup of the CDB was taken an hour before Restore Point R1 was 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 SQL while connected to PDB1.
• B. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using RMAN while connected to CDB$ROOT.
• C. This cannot be done due to the lack of a clean restore point.
• D. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using SQL while connected to CDB$ROOT.
• E. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using RMAN while connected to PDB1.

Answer: A

 

NEW QUESTION 45
Which three are true about Optimizer Statistics Advisor? (Choose three.)

• A. It is part of the DBMS_ADVISOR package.
• B. It is part of the DBMS_STATS package.
• C. It can recommend changes to improve the statistics gathering process.
• D. It always analyzes all schemas in the database.
• E. It runs automatically every night by default.
• 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 46
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Understanding functional and technical aspects of Oracle Database Administration II Exam Number: 1Z0-083

The following will be discussed in the ORACLE 1Z0-083 dumps:

• Creating an Oracle Database by using DBCA
• Patching Grid Infrastructure and Oracle Database
• Performing Recovery
• RMAN Troubleshooting and Tuning
• Restore and Recovery Concepts
• Duplicating a Database
• Diagnosing Failures
• Oracle Database: Deploy, Patch and Upgrade Workshop
• Transporting Data
• Using Flashback Technologies

 

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