[Q126-Q140] 1Z0-083 Certification – The Ultimate Guide [Updated 2025]

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1Z0-083 Certification – The Ultimate Guide [Updated 2025]

1Z0-083 Practice Exam and Study Guides – Verified By DumpsTorrent

NEW QUESTION 126
Which three are true about an application seed pluggable database (PDB)? (Choose three.)

It is automatically synchronized with its application root PDB when an application is upgraded.

It cannot be added to an application container after the application container has already been created.

A new application PDB created by cloning an application seed PDB can have an old version of the application installed after cloning completes.

It is automatically synchronized with its application root PDB when an application is installed.

It cannot be dropped from its application container.

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.

It is not required in an application container.

NEW QUESTION 127
Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases?

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

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 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 PDB snapshot is always a sparse copy of the source PDB

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

NEW QUESTION 128
A user complains about poor database performance.
You want to verify if the user’s session has waited for certain types of I/O activity.
Which view displays all waits waited on by a session at least once?

V$SESSION_EVENT

V$SESSTAT

V$SESSION_WAIT

V$SESSION_WAIT_CLASS

V$SESSION

NEW QUESTION 129
You notice that the performance of your production 24×7 Oracle 12c database has significantly degraded. Sometimes, you are not able to connect to the database instance because it hangs. How can you detect the cause of the degraded performance?

by performing emergency monitoring using Real-Time Automatic Database Diagnostic Monitor (ADDM) to fetch data directly from SGA for analysis

by running ADDM to fetch information from the latest Automatic Workload Repository (AWR) snapshots

by using Active Session History (ASH) data and performing hang analysis

by running ADDM in diagnostic mode

NEW QUESTION 130
Which three are true about recovery operations done without using Recovery Manager (RMAN)?
(Choose three.)

A lost SPFILE can be recovered from memory using SQL*PLUS.

A lost password file can be re-created with SQL*PLUS.

A lost TEMPFILE must always be re-created manually.

A lost password file can be manually re-created with the orapwd utility.

A lost PFILE can be re-created alert.log using SQL*PLUS.

A lost index tablespace can be re-created without performing any recovery.

NEW QUESTION 131
Choose the best answer. Examine this configuration: 1. CDB1 is an Oracle Database 12c Release 2 container database (CDB). 2. PDB1 and PDB2 are two pluggable databases (PDBs) in CDB1. After successfully performing all the preupgrade tasks, you execute these commands from the Oracle Database 18c environment: $ export ORACLE_SID=cdb1 $ sqlplus / as sysdba SQL> STARTUP UPGRADE; SQL> SHOW pdbs CON_ID CON_NAME OPEN MODE RESTRICTED —————————————————————2 PDB$SEED 3 PDB1 4 PDB2 MIGRATE YES MOUNTED YES MOUNTED YES SQL> ALTER PLUGGABLE DATABASE pdb1 OPEN UPGRADE; Pluggable database altered. SQL> exit $ $ORACLE_HOME/perl/bin/perl catctl.pl -C ‘PDB2’ What is the outcome?

It fails because PDB$SEED is in MIGRATE state.

Only CDB$ROOT, PDB$SEED, and PDB1 are upgraded.

Only CDB$ROOT, PDB$SEED, and PDB2 are upgraded.

It fails because PDB2 is not in UPGRADE state.

CDB$ROOT, PDB$SEED, PDB1, and PDB2 are upgraded.

Only CDB$ROOT and PDB$SEED are upgraded.

NEW QUESTION 132
Which three RMAN persistent settings can be set explicitly?

SPFILE backup duplexing

control file auto backup formats

archive log deletion policy

image copy duplexing

redo log backup duplexing

archive log backup duplexing

NEW QUESTION 133
Which two are true about flashback features in Oracle Database 19c and later releases?

Flashback logs are monitored and proactively deleted when beyond the retention period defined in DB_flashback_retention_TARGET only after there is space pressure

Flashback logs are monitored and proactively deleted when beyond the retention period defined in db_flashback_retention_target before there is space pressure.

Flashback logs are automatically purged whenever the value
Of DB_FLASHBACK_RETENTION_TARGET is changed.

Flashback logs are monitored for being older than the retention period defined in db_flashback_retention_target and can be deleted by an administrator written event trigger.

Flashback logs are automatically purged when db_flashback_retention_target is set lower than the time they have already been retained.

NEW QUESTION 134
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.

NEW QUESTION 135
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.

NEW QUESTION 136
A database is configured in ARCHIVELOG mode.
Full RMAN backups are taken 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? (Choose two.)

when any archived log from, before, or after the most recent backup is corrupt.

after losing all copies of the control file

after losing an archived log from after the most recent backup

after losing an archived log from before the most recent backup

after losing the SYSTEM tablespace

NEW QUESTION 137
Which four are true about RMAN backup sets? (Choose four.)

A backup piece can belong to only one backup set.

A data file can be split into multiple sections stored in different backup sets.

A data file can be split into multiple sections stored in different backup pieces in the same backup set.

Blocks from multiple data files can be contained in one backup piece,

A backup set can contain only one backup piece.

A backup set must be written to media.

A backup set must be written to disk.

Blocks from multiple data files can be contained in one backup set,

NEW QUESTION 138
Choose two. You plan to perform cross-platform PDB transport using XTTS. Which two are true?

Automatic conversion of endianess occurs.

The source and target platforms must have the same endianess.

The source PDB can be in MOUNT or OPEN state.

The source PDB must not be an application root.

The source PDB must be in MOUNT state.

A backup of the PDB must exist, taken using the BACKUP command with the To PLATFORM clause.

NEW QUESTION 139
Which three are true about requirements for various flashback operations?

flashback version query requires undo to retrieve all versions of a row that existed between two points in time.

flashback drop requires that the recyclebin parameter be set to on.

flashback data archive requires undo to store all versions of all rows of a table being tracked.

flashback transaction query requires undo to retrieve all versions of a row that existed between two points in time.

flashback drop requires undo to retrieve all versions of a row that existed between two points in time.

flashback version query requires that the recyclebin parameter be set to on.

NEW QUESTION 140
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? (Choose two.)

Data file 24 can be recovered while PDB2 is opened.

Data file 24 must be recovered while the CDB is opened.

Data file 24 can be recovered while CDB$ROOT and PDB$SEED are opened.

Data file 24 cannot be recovered while the CDB is opened.

Data file 24 must be recovered while PDB2 is closed.

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[Q126-Q140] 1Z0-083 Certification – The Ultimate Guide [Updated 2025]

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