Passing Oracle 1Z1-083 Exam Using 2024 Practice Tests [Q41-Q62]

1Z1-083 Oracle

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January 30, 2024

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Passing Oracle 1Z1-083 Exam Using 2024 Practice Tests

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NEW QUESTION 41
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 42
Which two are true about Oracle Database Configuration Assistant (DBCA) templates?

Oracle DBCA templates can store only logical structure and not database files.

The General Purpose or Transaction Processing templates are most suitable when concurrency and recoverability are key criteria.

New templates can only be created by modifying an existing user-created template.

Oracle DBCA templates can be used to create new databases and duplicate existing databases.

The Data Warehouse template is most suitable when transaction response time is the key criterion.

NEW QUESTION 43
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 SQL Access Advisor.

Run the Memory Advisor for the shared pool.

Run the SQL Tunning Advisor.

Run the Memory Advisor for the Program Global Area.

Run the Memory Advisor for the System Global Area.

NEW QUESTION 44
choose three Which three are true about RMAN duplexed backup sets or image copies?

A backup set may be duplexed with both copies written to disk.

An image copy on disk can be copied to disk.

A backup set may be duplexed with both copies written to sbt.

A backup set may be duplexed so that one copy is written to sbt and the other to disk.

An image copy on disk can be copied to sbt.

An image copy on sbt can be copied to disk.

NEW QUESTION 45
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_SLAVES to 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.

NEW QUESTION 46
Which two are true about monitoring waits for sessions and services?

v$session_wait and v$session both contain details of the event on which a waiting session is currently waiting.

v$session_wait_class displays waits broken down by wait class only for waiting sessions.

v$service_event displays wait counts for every wait event whether waited on or not, for each service.

v$session_wait and v$session both contain details of the event on which a non-waiting session last waited.

v$session_event displays all waits for all past and existing sessions if the wait has occurred at least once for a session.

NEW QUESTION 47
Which two are true about Rapid Home Provisioning (RHP), which has been available since Orcale 18c? (Choose two.)

It is an Oracle Database service

It cannot be used to upgrade Oracle Database homes.

It can be used to provision applications.

It can be used to patch Grid Infrastructure homes containing Oracle Restart.

It can be used to provision middleware.

Reference:
https://www.oracle.com/assets/rapid-home-provisioning-2405191.pdf

NEW QUESTION 48
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.)

Backups must be done incrementally.

Backups must be contained in backup sets.

Backups can be taken only if the database is in ARCHIVE LOG mode.

Backups can be done incrementally.

The database must be registered in an RMAN catalog.

Only consistent backups can be created.

NEW QUESTION 49
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.

NEW QUESTION 50
Which three are true about RMAN persistent configuration settings, administration, and their effects? (Choose three.)

A target database’s persistent RMAN configuration settings are always stored in the target’s control file

Backup older than the recovery window retention policy are always deleted automatically if the backup location has insufficient space.

Backups written to the fast recovery area (FRA) that are oboslete based on the redundancy retention policy can be deleted automatically to free space.

The RMAN SHOW ALL command displays only settings with nondefault values.

A target database’s persistent RMAN configuration settings are always synchronized automatically with the RMAN catalog.

The V$RMAN_CONFIGURATION view displays only settings with values that have been modified.

A DBA must specify either a redundancy retention policy or a recovery window retention policy.

Reference:
https://books.google.com.pk/books? id=pUEkAAAAQBAJ&pg=PA114&lpg=PA114&dq=V$RMAN_CONFIGURATION+view+displays+only+settings
+with+values+that+have+been+modified&source=bl&ots=fhC9A7ULeX&sig=ACfU3U2- cGhTjmAOpCZhvlL5R4j6ixLRAw&hl=en&sa=X&ved=2ahUKEwjJzf- WmtnoAhXT8eAKHQ9uBG8Q6AEwAHoECAwQJg#v=onepage&q=V%24RMAN_CONFIGURATION%20view
%20displays%20only%20settings%20with%20values%20that%20have%20been%20modified&f=false

NEW QUESTION 51
Which two statements are true about recovering logically corrupted tables or table partitions from an RMAN backup?

Tables or table partitions can be recovered by using an auxiliary instance only.

Tables or table partitions with a foreign key cannot be recovered.

Tables or table partitions can be recovered only when the database is in mount state.

Tables or table partitions from the system and sysaux tablespaces cannot be recovered.

Tables with not null constraints cannot be recovered.

NEW QUESTION 52
Which two are true about diagnosing Oracle Database failure situations using Data Recovery Advisor?

Using the Data Recovery Advisor list failure command always requires that the database for which failures are to be listed is in mount state.

Data Recovery Advisor can be used if a database is closed.

Data Recovery Advisor can proactively check for failures.

A failure can be closed only when it has been repaired.

The Data Recovery Advisor change failure command can be used only to change failure priorities.

NEW QUESTION 53
Which three are true about Oracle Grid Infrastructure for a Standalone Server?

It includes both Oracle Restart and Oracle Automatic Storage Management (ASM) software.

It creates one disk group during installation.

It requires the operating system oracle_base environment variable to be predefined before installation.

It requires Oracle ASM Filter Driver (ASMFD) to manage Automatic Storage Management (ASM) disks

It requires Oracle ASMLibto manage Automatic Storage Management (ASM) disks.

Automatic Storage Management (ASM) requires that O/S groups OSASM and OSDBA be assigned as secondary groups for its installation owner.

NEW QUESTION 54
Which two are true about Oracle Optimizer Statistics, their use, and their collection? (Choose two.)

The number of table rows is considered when evaluating the cost of accessing a table using an index.

Index balanced B*Tree height is considered when evaluating the cost of using an index.

The Statistics Advisor can help recommend the best way to gather statistics.

Statistics collected using DBMS_STATS always yield the best optimizer result.

The Statistics Advisor generates actions for all recommendations.

Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/19/tgsql/optimizer-statistics- advisor.html#GUID-D81A7708-FDA0-45BB-A6E2-103858B047AE

NEW QUESTION 55
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.

Explanation/Reference: https://books.google.com.pk/books?id=DeQkU5E75DUC&pg=PA869&lpg=PA869&dq=By+default,
+AWR+snapshots+are+automatically+purged+after+eight
+days&source=bl&ots=DfoGmJfCMy&sig=ACfU3U0Pf2RgIs72LUV4HUzs5UIXI8sXEQ&hl=en&sa=X&ved=2ah UKEwjb8bKhu9noAhUwTxUIHRpYAuMQ6AEwA3oECAsQLA#v=onepage&q=By%20default%2C%20AWR%
20snapshots%20are%20automatically%20purged%20after%20eight%20days&f=false

NEW QUESTION 56
Which three can be done using Oracle Database Configuration Assistant (DBCA) starting from Oracle Database 19c? (Choose three.)

cloning a remote container database in interactive mode

cloning a remote pluggable database in silent mode

relocating a remote pluggable database in interactive mode

relocating a remote container database in silent mode

cloning a remote container database in silent mode

relocating a remote pluggable database in silent mode

relocating a remote container database in interactive mode

Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/19/clone-pdbs-using-dbca-silent- mode/index.html?
learningpath=true&appuser=nobody&appsession=170971049395&contentid=26693&activityname=Clone%
20PDBs%20using%20DBCA%20in%20Silent%20Mode&eventid=6352

NEW QUESTION 57
Which two are true about gathering optimizer statistics? (Choose two.)

Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open PDBs except PDB$SEED.

Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to a PDB opened in read/write mode gathers object statistics for that PDB.

Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics only in CDB$ROOT.

System statistics can be gathered only while connected to CDB$ROOT.

Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open pluggable databases (PDBs)

Explanation
https://mikedietrichde.com/2016/10/21/gather-fixed-objects-stats-in-pdbs-as-well/#:~:text=Yes%2C%20you’ll%2

NEW QUESTION 58
Which three are true about thresholds, metrics, and server-generated alerts? (Choose three.)

All metrics are instance related.

Cleared stateful alerts are displayed by querying DBA_ALERT_HISTORY.

A space usage management alert is automatically cleared after the underlying problem is resolved.

They are generated by SMON when a tablespace is 97% full.

Metrics are statistical counts for a specific unit.

STATISTICS_LEVEL must be set to ALL to generate alerts.

NEW QUESTION 59
Which two are true about server-generated alerts? (Choose two.)

Stateful alerts must be created by a DBA after resolving the problem.

Stateless alerts can be purged manually from the alert history.

Stateless alerts can be cleared manually.

Stateless alerts are automatically cleared.

Stateful alerts are purged automatically from the alert history.

Explanation/Reference: https://jameshuangsj.wordpress.com/2019/12/01/clears-stateless-alerts-in-oem-by-using-emcli/

NEW QUESTION 60
Which four are true about a Recovery Manager (RMAN) duplication without a TARGET connection? (Choose four.)

The NOREDO clause must be used if the backups of the database being duplicated were taken when the database was in NOARCHIVELOG mode.

The UNDO TABLESPACE clause is always required when no connection exists to the TARGET instance.

RMAN “pushes” the backups of the database to be duplicated over the network to the auxiliary instance.

The NOREDO clause can be used if the backups of the database being duplicated were taken when the database was in ARCHIVE LOG mode.

RMAN SBT-based backups of the database to be duplicated can be used by the auxiliary instance.

The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is closed.

The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is opened.

RMAN disk-based backups of the database to be duplicated can be used by the auxiliary instance.

NEW QUESTION 61
Which two are true about the Automatic Database Diasnostic Monitor (ADDM)? (Choose two.)

It analyzes a period of time corresponding to the 12 hours of activity.

It runs automatically after each AWR snapshot.

A DBA can run it manually.

Results are written to the alert log.

It analyzes a period of time corresponding to the last day of activity.

NEW QUESTION 62
Which three are true about monitoring waits for sessions and services? (Choose three.)

V$SESSION_EVENT displays all waits for all past and existing sessions if the wait has occurred at least once for a session.

V$SERVICE_EVENT displays all waits for all services if the wait has occurred at least once for a service.

V$SESSION_WAIT_CLASS displays waits broken down by wait class only for waiting sessions.

V$SESSION_WAIT and V$SESSION both contain details of the event on which a non-waiting session last waited.

V$SESSION_EVENT displays all waits for all past sessions if the wait has occurred at least once for a session.

V$SESSION_WAIT and V$SESSION both contain details of the event on which a session is currently waiting.

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Oracle 1Z0-083 is an exam that tests the skills and knowledge of database administrators who are responsible for managing and maintaining Oracle databases. It is the second level of certification in the Oracle Database Administration track, following the Oracle Database Administration I exam. Passing 1Z1-083 exam demonstrates that the candidate has a deep understanding of the key concepts and practices of Oracle database administration and is qualified to work as a certified Oracle database administrator.

Oracle 1Z0-083 Certification Exam consists of 84 multiple-choice questions and has a time limit of 105 minutes. 1Z1-083 exam is available in English, Japanese, and Simplified Chinese. It is a proctored exam, which means that it must be taken in a secure testing center or online with a remote proctor. Passing 1Z1-083 exam demonstrates your expertise in Oracle database administration and can be a valuable asset in your career development.

Free 1Z1-083 Test Questions Real Practice Test Questions: https://www.dumpstests.com/1Z1-083-latest-test-dumps.html