[2022] Use Valid New Free 1Z0-083 Exam Dumps & Answers [Q39-Q55]

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[2022] Use Valid New Free 1Z0-083 Exam Dumps & Answers

1Z0-083 Braindumps PDF, Oracle 1Z0-083 Exam Cram

Q39. 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?

Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using RMAN while connected to PDB1.

Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using SQL while connected to PDB1.

Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using SQL while connected to CDB$ROOT.

Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by using RMAN while connected to CDB$ROOT.

This cannot be done due to the lack of a clean restore point.

Q40. Which three are true about Automatic Workload Repository (AWR), Automatic Database Diagnostic Monitor (ADDM), and the Manageability Monitor (MMON) background process? (Choose three.)

ADDM can recommend shrinking the buffer cache.

ADDM can recommend extending the buffer cache.

By default, MMON creates an AWR snapshot every 30 minutes.

ADDM performs its analysis only when a DBA requests it.

By default, AWR snapshots are automatically purged after eight days.

AWR snapshots must be deleted when no longer required by ADDM.

Q41. Which three are true about Automatic Workload Repository (AWR) snapshots?

They can be retained forever.

They are always created automatically.

They are always created manually.

They are generated if STATISTICS LEVEL is set to TYPICAL.

They are generated if STATISTICS LEVEL is set to BASIC.

They are generated if STATISTICS LEVEL is set to ALL.

Q42. Which three are true about patchsets? (Choose three.)

They can be applied in a rolling fashion for Clusterware and the databases.

They can introduce new features.

They are installed via OPatch or OPatchAuto.

Installing a patchset is considered an “upgrade”.

They are only released quarterly.

A base release is not needed to install patchsets.

Q43. Which three are true about the FLASHBACK DATABASE feature? (Choose three.)

FLASHBACK LOGS are archived after a log switch.

A database can be flashed back using SQL*PLUS.

Queries and DML have the same FLASHBACK LOG overhead when flashback is enabled for a database.

FLASHBACK DATABASE only uses FLASHBACK LOGS to get the database to the desired flashback time.

It always generates REDO and UNDO.

It requires that the target database be in ARCHIVELOG mode.

Q44. While backing up to the Oracle Fast Recovery Area (FRA), you determined the backup is taking too long and suspect a performance bottleneck.
Which three are true about diagnosing and tuning these problems? (Choose three.)

If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.

Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using synchronous I/O.

If an RMAN BACKUP VALIDATE command takes noticeably less than an actual backup, then write I/O is a likely bottleneck.

If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then read I/O is a likely bottleneck.

Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECOND are a potential performance bottleneck when synchronous I/O is used.

Setting DBWR_IO_SLAVESto a non zero value can improve backup performance when using asynchronous I/O/

Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITS are a potential performance bottleneck when asynchronous I/O is used.

Q45. Choose the best answer. You want to transport the UNIVERSITY tablespace from one database to another. The UNIVERSITY tablespace is currently open read/write. The source and destination platforms have the same endian Examine this list of steps:. 1. Make the UNIVERSITY tablespace read-only on the source 2. Export the UNIVERSITY tablespace metadata using EXPDP. 3. Create a cross-platform backup set from the UNIVERSITY source system, using an RMAN command that includes the DATAPUMP clause. 4. Copy the cross-platform backup sets to the destination system. 5. Copy the Data Pump dump set from the source to the destination system. 6. Restore the cross-platform backup set on the destination system using an RMAN command that includes the DATAPUMP clause. 7. Import the UNIVERSITY tablespace metadata using IMPDP. 8. Make the UNIVERSITY tablespace read/write on the destination system. Which are the minimum number of steps required, in the correct order, to transport the UNIVERSITY tablespace?

3,4,6

2,3,4,5,6,7

1,3,4,6,8

1,2,3,4,5,6,7,8

Q46. A container database called CDB1 is OMF-enabled.
PDB_FILE_NAME_CONVERT is not configured in CDB1. PDB1 was unplugged from CDB1 earlier in the week. Examine this command, which will be executed in CDB1:
CREATE PLUGGABLE DATABASE pdb1
USING ‘/u01/app/oracle/oradata/pdb1.xml’
SOURCE_FILE_NAME_CONVERT =
(‘/u01/app/oracle/oradata/’, ‘/u02/app/oracle/oradata/’);
Which two are true? (Choose two.)

PDB1 data files already exist in the correct location.

DBMS_PDB.CHECK_PLUG_COMPATIBILITY must be run in CDB1 before executing the command.

PDB_FILE_NAME_CONVERT must be set before executing the command.

/u01/app/oracle/oradata/pdb1.xml does not contain the current locations of data files for PDB1.

PDB1 must be dropped from CDB1.

Q47. Automatic Shared Memory Management is disabled for one of your database instances.
Some SQL statements perform poorly due to excessive hard parse activity, thereby degrading performance.
What would be your next step?

Run the Memory Advisor for the System Global Area.

Run the SQL Tuning Advisor.

Run the SQL Access Advisor.

Run the Memory Advisor for the shared pool.

Run the Memory Advisor for the Program Global Area.

Q48. Choose two. Which two are true about Oracle Database Configuration Assistant (DBCA)?

It can only be launched from the command line interface.

It can be launched from both the command line and the Universal Installer (OUI) interfaces.

It can be used to create container databases and non-container databases.

It can be used to change the character set of an existing database.

It can be used to convert a non-container database to a container database.

Q49. Which three actions are performed by Database Upgrade Assistant (DBUA)?

It removes the audsys schema and the audit_admin and audit_viewer roles.

It sets all user tablespaces to “read-only” before starting the upgrade.

It recompiles all stored pl/sql code by using utlrp.sql.

It Increases tablespace size, if required, to meet upgrade requirements.

It empties the recycle bin.

It performs prerequisite checks to verify if the Oracle database is ready for upgrade.

Q50. Which three are true about backup, restore, and recovery operations done without using Recovery Manager (RMAN)?

Oracle archive log backups, copied using an O/S utility, can be added to the RMAN catalog as a backup set.

Backing up a database in archivelog mode using O/S utilities requires that the database instance be started and the database be in mount state.

Backing up a database in noarchivelog mode using O/S utilities requires that the database instance be started and the database be in mount state.

Oracle data file backups, copied using an O/S utility, can be added to the RMAN catalog as image copies.

Backing up a database in noarchivelog mode using O/S utilities requires that the database instance be shut down.

Backing up a database in archivelog mode using O/S utilities requires that the database instance be started and the database be in open state.

An Oracle database can be restored from backup files copied using O/S utilities.

Q51. Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.)

A PDB snapshot is always a full copy of the source PDB.

A PDB snapshot is always a sparse copy of the source PDB.

A snapshot copy PDB depends on a storage snapshot which can only be stored on specific file systems.

A PDB snapshot depends on a storage snapshot which can be stored on any file system.

A PDB snapshot depends on a storage snapshot which can only be stored on specific file systems.

A snapshot copy PDB depends on a storage snapshot which can be stored on any file system.

A snapshot copy PDB can be created from a stand-alone clone PDB.

Q52. Choose two. Some archived log backups have been accidentally deleted from storage. Which two commands should be used to update the status of backups in the recovery catalog to display only the missing backups?

RESYNC CATALOG

CROSSCHECK BACKUP OF ARCHIVELOG ALL

LIST ARCHIVELOG ALL

LIST EXPIRED

LIST ARCHIVELOG

REPORT OBSOLETE

Q53. Examine these queries and their output:

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

Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by Using SQL while connected to CDB$ROOT.

Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by Using RMAN while connected to PDB1.

Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by Using RMAN while connected to CDB$ROOT.

Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by Using SQL while connected to PDB1.

This cannot be done due to the lack of a clean restore point.

Q54. Which two are true about common objects? (Choose two.)

They can be created only in CDB$ROOT.

They can be only metadata-linked in an application container.

They can exist in user-defined schemas only in application containers.

They can exist in CDB$ROOTand an application root.

They can be extended data-linked in CDB$ROOT.

They can be created only in an application root.

Q55. Which two are true about RMAN backups when using a media manager? (Choose two.)

A media manager always writes RMAN requested backups to tape.

By default, a request for a proxy copy may result in a backup set being created.

A media manager is required to create RMAN proxy copies.

A media manager is required to create RMAN image copies.

The media manager layer (MML) routines provided by Oracle support any vendors’ media management products.

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