Check the Free demo of our 1Z0-083 Exam Dumps with 285 Questions [Q26-Q40]

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Check the Free demo of our 1Z0-083 Exam Dumps with 285 Questions

Clear your concepts with 1Z0-083 Questions Before Attempting Real exam

Oracle 1Z0-083 certification exam consists of 84 multiple-choice questions and must be completed within 120 minutes. 1Z0-083 exam is computer-based and can be taken at any authorized testing center. To pass the exam, candidates must score a minimum of 64%. 1Z0-083 exam is available in several languages, including English, Japanese, Simplified Chinese, and Korean.

NO.26 Which two are true about the execution of operating system scripts starting from Oracle Database 19c?
(Choose two.)

orainstRoot.sh can be executed automatically by the Database installer by using sudo or root credentials.

root.sh can be executed automatically by the Database Installer only if it is provided with root credentials.

The sudo password can be specified in a response file.

root.sh can be executed automatically by the Database installer only by using sudo credentials.

The sudo password must be specified in a response file.

The root password cannot be specified in a response file.

NO.27 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 ARCHIVELOG mode.

Backups can be done incrementally.

The database must be registered in an RMAN catalog.

Only consistent backups can be created.

NO.28 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?

Data file 24 can be recovered only while connected to PDB2.

Data file 24 can be restored only while connected to CDB$ROOT.

Data file 24 can be recovered while connected to CDB$ROOT.

Data file 24 can be restored and recovered while connected to CDB$ROOT.

Data file 24 can be restored only while connected to PDB2.

Data file 24 can be recovered while connected to PDB2.

NO.29 1.Which two are prerequisites for creating a backup-based duplicate database?

connecting to the target database and a recovery catalog to execute the duplicate command

creating a password file for an auxiliary instance

connecting to an auxiliary instance

matching the database identifier (DBID) of the source database and the duplicate database

creating an SPFILE for the target database

NO.30 Which two are true about the Oracle database tuning methodology?

The database instance memory should always be tuned before tuning any file systems.

Tuning activities should stop once the user is satisfied with performance.

The Oracle Database time model should be used to find the database and instance areas most in need of tuning.

SQL statements should always be tuned before tuning any file systems.

Tuning activities should stop once agreed service levels for performance have been met.

The alert log should be used to find the database and instance areas most in need of tuning.

NO.31 Examine this configuration:
1. CDB1 is a container database.
2. PDB1 and PDB2 are pluggable databases in CDB1.
3. PDB1 and PDB2 are open in read write mode.
You execute these commands successfully:

Which two are true?

CDB1 is in mount state

CDB1 is shut down.

PDB1 is closed.

Uncommitted transactions in PDB1 have been rolled back.

Uncommitted transactions in CDB1 and pdbi have been rolled back.

NO.32 Examine this configuration:
1. The orcl database data files are in Automatic Storage Management (Oracle ASM) disk group +data.
2. orcl uses disk group +fra for the Fast Recovery Area.
3. listener is the listener for orcl.
4. The database, listener, ASM instance, and ASM disk groups are managed by Oracle Restart.
5. All components are currently shut down.
You execute this command:
$ srvctl start database -d ORCL
What is the outcome?

The ORCL database, the Oracle ASM instances, the +data and +fra disk groups, and the listener are started.

Only the orcl database instance is started.

Only the orcl database instance and the +data and +fra disk groups are started.

Only the orcl database instance, the Oracle ASM instance, and the +data and +fra disk groups are started.

Only the orcl database and the ASM instances are started.

NO.33 Examine this configuration:
1.The ORCL database data files are in Automatic Storage Management (Oracle ASM) disk group +DATA.
2.ORCL uses disk group +FRA for the Fast Recovery Area.
3.LISTENER is the listener for ORCL.
4.The database, listener, ASM instance, and ASM disk groups are managed by Oracle Restart.
5.All components are currently shut down.
You execute this command:

What is the outcome?

The ORCL database, the Oracle ASM instances, the +DATA and +FRA disk groups, and the LISTENER are started.

Only the ORCL database instance is started.

Only the ORCL database and the ASM instances are started.

Only the ORCL database instance, the Oracle ASM instance, and the +DATA and +FRA disk groups are started.

Only the ORCL database instance and the +DATA and +FRA disk groups are started.

NO.34 RMAN has just been connected to a target database and the recovery catalog database.
In which two cases would an automatic full resynchronization occur between this target database’s control file and the RMAN recovery catalog? (Choose two.)

when control file metadata for archive log backups or image copies has been overwritten in the target database’s control file due to being older than CONTROL_FILE_RECORD_KEEP_TIME

when control file metadata for data file backups or image copies has been overwritten in the target database’s control file due to being older than CONTROL_FILE_RECORD_KEEP_TIME

when a new tablespace is added to a registered target database

when a backup of the current control file is created

when the target is first registered

NO.35 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.
19c: PDB SYSTEM or UNDO Tablespace Recovery: The CDB and all other PDBs can be left opened. 1. Connect to PDB 2. Shutdown abort the PDB, if its not automatically done. sqlplus sys@sales_pdb as sysdba sql> SHUTDOWN ABORT; OR ALTER PLUGGABLE DATABASE CLOSE ABORT; rman target sys@slaes_pdb rman> restore database; rman> recover database; rman> alter pluggable database sales_pdb open;

NO.36 While backing up to the Oracle Fast Recovery Area (FRA), you determined the backup istaking 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 takesroughly 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 lessthan an actual backup, then write I/O is a likely bottleneck.

If an RMAN BACKUP VALIDATE command takesroughly 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.

NO.37 A container database called CDB1is OMF-enabled.
PDB_FILE_NAME_CONVERTis not configured in CDB1.
PDB1was unplugged from CDB1earlier 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_COMPATIBILITYmust be run in CDB1before executing the command.

PDB_FILE_NAME_CONVERTmust be set before executing the command.

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

PDB1 must be dropped from CDB1.

NO.38 You must transport the UNIVERSITY tablespace from one database to another.
The UNIVERSITY tablespace is currently open read/write.
The source and destination platforms have different endian formats. Examine this list of actions:
1.Make the UNIVERSITY tablespace read-only on the source system.
2.Export the UNIVERSITY tablespace metadata using EXPDP.
3.Convert the UNIVERSITY tablespace data fies to the destination platform format using RMAN on the source system.
4.Copy the UNIVERSITY tablespace data files to the destination system.
5.Copy the Data Pump dump set to the destination system.
6.Convert the UNIVERSITY tablespace data files to the destination platform format using RMAN on the destination system.
7.Import the UNIVERSITY tablespace metadata using IMPDP.
8.Make the UNIVERSITY tablespace read/write on the destination system.
Which is the minimum number of actions required, in the correct order, to transport the UNIVERSITY tablespace?

1, 2, 4, 5, 7, 8

1, 2, 4, 6, 7, 8

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

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

2, 4, 5, 6, 7

NO.39 Which two are true about the Oracle dataabse methodology? (Choose two.)

The Oracle Database time model should be used to find the database and instance areas most in need of tuning.

Tuning activities should stop once the user is satisfied with performance.

Tuning activities should stop once agreed service levels for performance have been met.

The database instance memory should always be tuned before tuning any file systems.

SQL statements should always be tuned before tuning any file systems.

The alert log should be used to find the database and instance areas most in need of tuning.

NO.40 Identify three scenarios in which RMAN will use backup sets to perform active database duplication.

when the duplicate … from active database command contains the section size clause

when you perform active database duplication on a database with flashback disabled

when you specify set encryption before the duplicate … from active database command

when the number of auxiliary channels allocated is equal to or greater than the number of target channels

when you perform active database duplication on a database that has readonly tablespaces

Oracle 1Z0-083 exam is an important certification exam for anyone who wants to become a certified Oracle Database Administrator. 1Z0-083 exam covers a wide range of topics related to database administration and requires candidates to have a strong understanding of these concepts. With the right preparation and study, however, passing 1Z0-083 exam is achievable and can be a great way to advance your career in this field.

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