1Z0-083 Training & Certification Get Latest Oracle Database 19c Updated on Aug 30, 2021 [Q22-Q47]

1Z0-083 Training & Certification Get Latest Oracle Database 19c Updated on Aug 30, 2021

Certification Training for 1Z0-083 Exam Dumps Test Engine

NEW QUESTION 22
Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.)

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

Answer: D,G

 

NEW QUESTION 23
Which three are true about thresholds, metrics, and server-generated alerts? (Choose three.)

• A. STATISTICS_LEVEL must be set to ALL to generate alerts.
• B. All metrics are instance related.
• C. Metrics are statistical counts for a specific unit.
• D. Cleared stateful alerts are displayed by querying DBA_ALERT_HISTORY.
• E. A space usage management alert is automatically cleared after the underlying problem is resolved.
• F. They are generated by SMON when a tablespace is 97% full.

Answer: A,C,E

 

NEW QUESTION 24
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? (Choose three.)

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

Answer: A,C,F

 

NEW QUESTION 25
Which three are true about transporting databases across platforms using Recovery Manager (RMAN) image copies? (Choose three.)

• A. By default, the transported database will use Oracle Managed Files (OMF)
• B. Databases can be transported between systems with different endian formats.
• C. The password file is automatically converted by RMAN.
• D. A new DBID is automatically created for the transported database.
• E. Data files can be converted on the source system.
• F. Data files can be converted on the destination system.

Answer: B,C,E

Explanation:
Explanation
Password file is automatically converted by RMAN.

 

NEW QUESTION 26
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 database link must exist in the remote CDB referring to the local CDB.
• B. PDB3's application root replica must exist in the local CDB.
• C. The HR_ROOT replica must exist in the remote CDB.
• D. A proxy PDB must exist in the application root in the local CDB.
• E. A proxy PDB must exist in the application root in the remote CDB.
• F. A database link must exist in the local CDB root referring to the remote CDB.

Answer: A,C,D

 

NEW QUESTION 27
Which four are true about duplicating a database using Recovery Manager (RMAN)? (Choose four.)

• A. A backup of the target database is always required.
• B. A connection to an auxiliary instance is always required.
• C. Duplication can be done by having the auxiliary database instance pull backup sets from the target database instance.
• D. A new DBID is always created for the duplicated database.
• E. A subset of the target database can be duplicated.
• F. A connection to the target database instance is always required.
• G. A connection to the recovery catalog instance is always required.
• H. Duplication can be done by having the target database instance push copies to the auxiliary database instance.

Answer: B,C,E,H

Explanation:
Explanation
A duplicate database is a copy of your target database. With the FOR STANDBY clause, it keeps the same unique database identifier(DBID); If FOR STANDBY not specified it creates a new DBID. The duplicate database can include the same content or only a subset from the source database. It can be in the same host or a separate host. The principal work of the duplication is performed by the auxiliary channels.These channels correspond to a server session on the auxiliary instance on the destination host for backup based duplication.
For active database duplication the target channels perform the work of pushing data file copies to the auxiliary instance (if number of allocated target channels is greater than the number of allocated auxiliary channels).

 

NEW QUESTION 28
A container database (CDB) contains two pluggable databases PDB1 and PDB2.
The LOCAL_UNDO_ENABLEDdatabase property is set to FALSEin the CDB.
Data file 24 of PDB2was deleted and you need to restore and recover it.
The only RMAN backup that exists was created with the BACKUP DATABASEcommand while connected to CDB$ROOT.
Which three are true? (Choose three.)

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

Answer: A,C,F

 

NEW QUESTION 29
Which two are true about automatic block repair?

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

 

NEW QUESTION 30
Which four are true about duplicating a database using Recovery Manager (RMAN)? (Choose four.)

• A. A backup of the target database is always required.
• B. A connection to an auxiliary instance is always required.
• C. Duplication can be done by having the auxiliary database instance pull backup sets from the target database instance.
• D. A new DBID is always created for the duplicated database.
• E. A subset of the target database can be duplicated.
• F. A connection to the target database instance is always required.
• G. A connection to the recovery catalog instance is always required.
• H. Duplication can be done by having the target database instance push copies to the auxiliary database instance.

Answer: B,C,E,H

Explanation:
A duplicate database is a copy of your target database. With the FOR STANDBY clause, it keeps the same unique database identifier(DBID); If FOR STANDBY not specified it creates a new DBID. The duplicate database can include the same content or only a subset from the source database. It can be in the same host or a separate host. The principal work of the duplication is performed by the auxiliary channels.These channels correspond to a server session on the auxiliary instance on the destination host for backup based duplication. For active database duplication the target channels perform the work of pushing data file copies to the auxiliary instance (if number of allocated target channels is greater than the number of allocated auxiliary channels).

 

NEW QUESTION 31
Which three are true about block media recovery? (Choose three.)

• A. The data file containing the block being recovered remains online.
• B. It cannot repair logical corruption.
• C. It can be performed on noncorrupt blocks.
• D. To use it, Flashback Database must be enabled.
• E. A block being recovered is not accessible.
• F. The target database for which one or more blocks are to be recovered must be in the OPEN state.

Answer: A,D,F

 

NEW QUESTION 32
Which three are true about using an RMAN Recovery Catalog with a pluggable database (PDB) target connection in Oracle Database 19c and later releases? (Choose three.)

• A. The base catalog must be enabled for Virtual Private Catalog use.
• B. The base catalog must be used by RMAN when performing point-in-time recovery for the PDB registered in the Virtual Private Catalog.
• C. The target PDB must be registered in both the base catalog and the Virtual Private Catalog.
• D. The base catalog owner must give the Virtual Private Catalog access to metadata for one or more PDBs.
• E. The target PDB must be registered in a Virtual Private Catalog.
• F. The target PDB must be registered in a base catalog.

Answer: B,D,E

 

NEW QUESTION 33
Which three are true about opatchauto? (Choose three.)

• A. It must be invoked by a user with root user privileges.
• B. It requires the Oracle Grid Infrastructure and Oracle Database instances to be shut down before being invoked.
• C. It applies patches in nonrolling mode by default.
• D. It is used to apply interim patches to Oracle Grid Infrastructure and Oracle Database home combinations.
• E. Patches are applied via opatchauto.
• F. It performs a shutdown and then a restart of all processes in both Oracle Grid Infrastructure and Oracle Database home during the patching process.
• G. Users must always input patch plans to opatchauto.

Answer: A,D,F

 

NEW QUESTION 34
Examine this configuration:
CDB1 is a container database.
PDB1 and PDB2 are pluggable databases in CDB1.
PDB1 and PDB2 are OPEN in READ WRITE mode.
You execute these commands successfully:

Which two are true? (Choose two.)

• A. Uncommitted transactions in CDB1 and PDB1 have been rolled back.
• B. Uncommitted transactions in PDB1 have been rolled back.
• C. CDB1 is shut down.
• D. PDB1 is closed.
• E. CDB1 is in MOUNT state

Answer: B,D

 

NEW QUESTION 35
Which three are true about an application seed pluggable database (PDB)? (Choose three.)

• A. A new application PDB created by cloning an application seed PDB can have an old version of the application installed after cloning completes.
• B. It is not required in an application container.
• C. A new application PDB created by cloning an application seed PDB can have an up-to-date version of the application installed after cloning completes.
• D. It cannot be added to an application container after the application container has already been created.
• E. It is automatically synchronized with its application root PDB when an application is upgraded.
• F. It is automatically synchronized with its application root PDB when an application is installed.
• G. It cannot be dropped from its application container.

Answer: B,C,F

 

NEW QUESTION 36
For which two requirements can you use the USER_TABLESPACE clause with the CREATE PLUGGABLE DATABASE command? (Choose two.)

• A. to exclude a temp tablespace when plugging in a PDB
• B. to specify the list of user tablespaces to include when moving a non-CDB to a PDB
• C. to include specific user tablespaces only when relocating a PDB
• D. to specify the list of tablespaces to include when creating a PDB from the CDB seed
• E. to exclude all tablespaces except SYSTEM, SYSAUX, and TEMP when plugging in a PDB
• F. to specify a default tablespace in a PDB cloned from another PDB in the same CDB.

Answer: B,E

Explanation:
Reference:
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/admin/creating-and-removing- pdbs-with-sql-plus.html#GUID-1C47D543-8376-48AE-A1AE-632316731D59

 

NEW QUESTION 37
Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.)

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

Answer: D,G

Explanation:
Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/18/multi/administering-pdb- snapshots.html#GUID-35B03C37-00BA-4945-BF20-9A7C4C541955

 

NEW QUESTION 38
Which four are true about RMAN backup sets?

• A. A backup piece can belong to only one backup set.
• B. Blocks from multiple data files can be contained in one backup set.
• C. A backup set can contain only one backup piece.
• D. A backup set must be written to disk.
• E. Blocks from multiple data files can be contained in one backup piece.
• F. A data file can be split into multiple sections stored in different backup sets.
• G. A backup set must be written to media.
• H. A data file can be split into multiple sections stored in different backup pieces in the same backup set.

Answer: A,D,E,F

 

NEW QUESTION 39
Which three are true about managing memory components in an Oracle database instance? (Choose three.)

• A. With Automatic Shared Memory Management, the database instance can increase the Large Pool size by reducing the Shared Pool size.
• B. Automatic Memory Management must be used together with locking the System Global Area into physical memory.
• C. With Automatic Shared Memory Management, the database instance can increase the Program Global Area size by reducing the System Global Area size.
• D. Automatically tuned and resized System Global Area components will always revert to their initial sizes after an instance restart.
• E. With Automatic Memory Management, the database instance can increase the System Global Area size by reducing the Program Global Area size.
• F. On Line Transaction Processing systems often use less Program Global Area than Decision Support Systems.

Answer: A,C,F

 

NEW QUESTION 40
Your database is in ARCHIVELOG mode and you plan to use Flashback Database.
Which two features or parameters manage space availability in the fast recovery area? (Choose two.)

• A. the backup optimization policy
• B. the DB_RECOVERY_FILE_DEST parameter setting
• C. the DB_CREATE_ONLINE_LOG_DEST_n parameter setting
• D. the archived log deletion policy
• E. using guaranteed UNDO retention
• F. the backup retention policy

Answer: C,F

 

NEW QUESTION 41
Which two are true about gathering optimizer statistics?

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

Answer: B,C

 

NEW QUESTION 42
Examine these actions:
1.Create a new database for a recovery catalog.
2.Create a tablespace with sufficient space in the catalog database for the recovery catalog.
3.Configure ARCHIVELOG mode for the catalog database.
4.Create a user to own the recovery catalog schema with quota on the tablespace that will contain the catalog.
5.Grant the RECOVERY_CATALOG_OWNER role to the recovery catalog schema owner.
6.Grant the SYSBACKUP privilege to the recovery catalog schema owner.
Which are the minimum actions that must be performed before executing the CREATE CATALOG command?

• A. 1, 3, 4, 5
• B. 1, 2, 3, 4, 5, 6
• C. 2, 4, 5, 6
• D. 1, 2, 4, 5
• E. 2, 4, 5

Answer: E

 

NEW QUESTION 43
Which two are true about RMAN duplexed backup sets? (Choose two.)

• A. A non-duplexed backup set written to disk can be duplexed to tape by backing up the backup set that is already on disk.
• B. A duplexed backup set always uses twice as many SBT channels as a non-duplexed backup set for the same number of files.
• C. A non-duplexed backup set written to SBT can be duplexed to tape by backing up the backup set that is already on tape.
• D. A non-duplexed backup set written to SBT can be duplexed to disk by backing up the backup set that is already on tape.
• E. A duplexed backup set uses the same number of SBT channels as a non-duplexed backup set for the same number of files.
• F. A non-duplexed backup set written to disk can be duplexed to disk by backing up the backup set that is already on disk.

Answer: A,B

 

NEW QUESTION 44
Which three are true about the SQL Tuning Advisor? (Choose three.)

• A. It checks each query being analyzed for missing statistics.
• B. It can recommend semantic changes to SQL statements.
• C. It considers all SQL statements being analyzed by the advisor task as a group.
• D. It checks each query being analyzed for stale statistics.
• E. It builds SQL profiles for each poorly performing SQL statement to prevent regressions.
• F. It only recommends syntactic changes to SQL statements.

Answer: A,D,E

 

NEW QUESTION 45
The USERS tablespace consists of data files 3 and 4 and must always be online in read/write mode.
Which two are true about using RMAN to perform an open database back up of this tablespace? (Choose two.)

• A. Backups can be done incrementally.
• B. Backups must be done incrementally.
• C. Backups must be contained in backup sets.
• D. Backups can be taken only if the database is in ARCHIVELOG mode.
• E. The database must be registered in an RMAN catalog.
• F. Only consistent backups can be created.

Answer: D,E

 

NEW QUESTION 46
Which operating system group is NOT needed to perform an Oracle Database installation?

• A. OSRACDBA
• B. OSKMDBA
• C. OSDBA
• D. OSASM
• E. OSOPER

Answer: A

 

NEW QUESTION 47
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