1Z0-083 Self-Study Guide for Becoming an Oracle Database Administration II Expert
1Z0-083 Study Guide Realistic Verified 1Z0-083 Dumps
Oracle 1Z0-083 exam is a 105-minute exam consisting of 70 multiple-choice questions that test your knowledge in various areas of Oracle Database Administration, including database architecture, backup and recovery, performance tuning, security, and managing resources. 1Z0-083 exam is available in two formats: on-site proctored and online proctored. The on-site proctored exam is conducted at authorized testing centers, while the online proctored exam can be taken from anywhere using a webcam and stable internet connection.
Oracle 1Z1-083, also known as the Oracle Database Administration II certification exam, is a professional level exam that is designed to validate an individual's skills and knowledge in managing and maintaining an Oracle database. 1Z0-083 exam is intended for professionals who have a strong understanding of the Oracle database architecture, and who have experience in administering and maintaining an Oracle database.
NEW QUESTION # 13
Choose two. Examine this command: $ rhpctl move database -sourcehome Oracle_home_path -destinationhome Oracle_home_path For which two purposes can you use this command?
- A. to move an Oracle Database to the centralized Rapid Home Provisioning server
- B. to upgrade an Oracle Database on the centralized Rapid Home Provisioning server
- C. to switch to a patched Oracle Database home
- D. to switch to a read-only Oracle home
- E. to switch back to the previous Oracle home as part of a rollback operation
Answer: B,C
NEW QUESTION # 14
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?
- A. Only the ORCL database instance is started.
- B. Only the ORCL database instance and the +DATA and +FRA disk groups are started.
- C. Only the ORCL database and the ASM instances are started.
- D. Only the ORCL database instance, the Oracle ASM instance, and the +DATA and +FRA disk groups are started.
- E. The ORCL database, the Oracle ASM instances, the +DATA and +FRA disk groups, and the LISTENER are started.
Answer: E
Explanation:
Explanation
https://docs.oracle.com/html/E25494_01/start001.htm
NEW QUESTION # 15
Which two are true about the character sets used in an Oracle database? (Choose two.)
- A. Multibyte character sets allow more efficient space utilization than single byte character sets.
- B. Single-byte character sets always use 8-bit encoding schemes.
- C. Single-byte character sets always use 7-bit encoding schemes.
- D. Unicode enables information from any language to be stored using a single character set.
- E. Single-byte character sets provide better performance than multibyte character sets.
- F. Unicode is the only supported character set for Oracle databases created using Database Configuration Assistant (DBCA).
Answer: D,E
Explanation:
Reference:
https://docs.oracle.com/database/121/NLSPG/ch2charset.htm#NLSPG166
NEW QUESTION # 16
choose one You enable Flashback Data Archive for a table for which you want to track and save all transactions for four years. After some time, the requirement changes for keeping transactions from four to two years. You execute the following command to change the requirement: SQL> ALTER FLASHBACK ARCHIVE fdal MODIFY RETENTION 2 YEAR; What is the outcome?
- A. All the flashback data archives are purged and the subsequently created flashback archives are maintained for two years
- B. All historical data older than two years, if any, is purged from the flashback archive FDA1.
- C. All historical data older than two years, if any, is archived to flashback logs and the flashback archive is set to new retention time.
- D. An error is returned because the retention period cannot be reduced.
Answer: B
NEW QUESTION # 17
Choose three. Which three are true about creating container databases (CDBs) and pluggable databases (PDBs) in Oracle 19c and later releases?
- A. A PDB snapshot can be a full copy of a source PDB.
- B. A snapshot copy PDB does not depend on an existing storage snapshot of the source PDB.
- C. A CDB can be duplicated using Recovery Manager (RMAN) with no configuration required before starting the duplication.
- D. A snapshot copy PDB can be a full copy of a source PDB.
- E. A PDB snapshot can be a sparse copy of a source PDB.
- F. A CDB can be duplicated using the Database Configuration Assistant (DBCA) in silent mode with no configuration required before starting the duplication.
- G. A PDB snapshot depends on an existing storage snapshot of the source PDB.
Answer: C,D,G
NEW QUESTION # 18
Which four are true about a Recovery Manager (RMAN) duplication without a TARGET connection? (Choose four.)
- A. RMAN SBT-based backups of the database to be duplicated can be used by the auxiliary instance.
- B. The NOREDO clause must be used if the backups of the database being duplicated were taken when the database was in NOARCHIVELOG mode.
- C. RMAN "pushes" the backups of the database to be duplicated over the network to the auxiliary instance.
- D. The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is opened.
- E. The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is closed.
- F. The UNDO TABLESPACE clause is always required when no connection exists to the TARGET instance.
- G. RMAN disk-based backups of the database to be duplicated can be used by the auxiliary instance.
- H. The NOREDO clause can be used if the backups of the database being duplicated were taken when the database was in ARCHIVE LOG mode.
Answer: A,B,E,G
NEW QUESTION # 19
Choose three. Which three are true about recovery operations done without using Recovery Manager (RMAN)?
- A. A lost index tablespace can be re-created without performing any recovery.
- B. A lost password file can be manually re-created with the orapwd utility.
- C. A lost SPFILE can be recovered from memory using SQL*PLUS.
- D. A lost PFILE can be re-created from alert.log using SQL*PLUS.
- E. A lost TEMPFILE must always be re-created manually.
- F. A lost password file can be re-created with SQL*PLUS.
Answer: B,C,E
NEW QUESTION # 20
Which three are true about backup, restore, and recovery operations done without using Recovery Manager (RMAN)?
- A. Oracle archive log backups, copied using an O/S utility, can be added to the RMAN catalog as a backup set.
- B. 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.
- C. An Oracle database can be restored from backup files copied using O/S utilities.
- D. Backing up a database in noarchivelog mode using O/S utilities requires that the database instance be shut down.
- E. 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.
- F. Oracle data file backups, copied using an O/S utility, can be added to the RMAN catalog as image copies.
- G. 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.
Answer: A,C,F
NEW QUESTION # 21
Examine this configuration:
1. CDB1is a container database.
2. PDB1 and PDB2are pluggable databases in CDB1.
3. PDB1 and PDB2are OPENin READ WRITEmode.
You execute these commands successfully:
Which two are true? (Choose two.)
- A. CDB1is shut down.
- B. Uncommitted transactions in CDB1and PDB1have been rolled back.
- C. PDB1is closed.
- D. Uncommitted transactions in PDB1have been rolled back.
- E. CDB1is in MOUNT state
Answer: C,E
NEW QUESTION # 22
Choose three. Which three are true about patchsets?
- A. A base release is not needed to install patchsets.
- B. They can be applied in a rolling fashion for Clusterware and the databases.
- C. Installing a patchset is considered an "upgrade."
- D. They can introduce new features.
- E. They are only released quarterly.
- F. They are installed via OPatch or OPatchAuto.
Answer: A,C,D
NEW QUESTION # 23
Choose two. Which two are true about RMAN Multisection backups when a very large data file is divided into four sections?
- A. The four sections can be created serially.
- B. The four sections must be image copies.
- C. Each of the file sections must be processed serially.
- D. The four sections must be contained in backup sets.
- E. The four sections can be created in parallel.
Answer: D,E
NEW QUESTION # 24
Which two are true about RMAN encryption? (Choose two.)
- A. RMAN encryption keys are stored in a database keystore.
- B. Password encryption can be persistently configured using the CONFIGURE ENCRYPTION command.
- C. Dual-mode encrypted backups can be restored only if both the password and the keystore used for encryption are available.
- D. RMAN can encrypt the Oracle Database password file.
- E. The SET ENCRYPTION command overrides encryption settings specified by the CONFIGURE ENCRYPTION command.
Answer: C,E
Explanation:
Reference:
https://docs.oracle.com/database/121/BRADV/rcmconfa.htm#BRADV89476
NEW QUESTION # 25
Choose two. Which two are true about diagnosing Oracle Database failure situations using Data Recovery Advisor?
- A. Data Recovery Advisor can proactively check for failures.
- B. A failure can be closed only if the database is in MOUNT state.
- C. ata Recovery Advisor can be used if a database is in the NOMOUNT state.
- D. Data Recovery Advisor can be used if a database is closed.
- E. Using the Data Recovery Advisor LIST FAILURE command always requires that the database for which failures are to be listed is in MOUNT state.
Answer: A,E
NEW QUESTION # 26
You notice performance degradation in your production Oracle 12c database. You want to know what caused this performance difference. Which method or feature should you use?
- A. SQL Performance Analyzer
- B. Active Session History (ASH) report
- C. Database Replay
- D. Automatic Database Diagnostic Monitor (ADDM) Compare Period report
Answer: D
NEW QUESTION # 27
You plan to install Oracle Grid Infrastructure for a Standalone Server and Oracle Database for the first time on a server. Examine this command and its outcome: Which two are true? (Choose two.)
- A. oracle will be an owner of the Oracle Inventory.
- B. oracle will be granted the SYSASM privilege when installing the Oracle Database software.
- C. oracle must be the owner of every Oracle Database installation.
- D. oracle can own an Oracle Database installation but not an Oracle Grid Infrastructure installation.
- E. The user account, oracle, and group, oinstall, can be used for all Oracle software installations.
Answer: D,E
NEW QUESTION # 28
While backing up to an SBT channel, you determine that the read phase of your compressed Recovery Manager (RMAN) incremental level 0 backup is a bottleneck.
FORCE LOGGING is enabled for the database.
Which two could improve read performance? (Choose two.)
- A. Increase the size of the database buffer cache.
- B. Increase the size of tape I/O buffers.
- C. Disable FORCE LOGGING for the database.
- D. Increase the level of RMAN multiplexing.
- E. Enable asynchronous disk I/O.
Answer: A,D
NEW QUESTION # 29
choose three Which three RMAN persistent settings can be set explicitly?
- A. archive log deletion policy
- B. SPFILE backup duplexing
- C. redo log backup duplexing
- D. archive log backup duplexing
- E. image copy duplexing
- F. control file auto backup formats
Answer: A,D,F
NEW QUESTION # 30
Which two are true about server-generated alerts? (Choose two.)
- A. Stateless alerts can be cleared manually.
- B. Stateful alerts must be created by a DBA after resolving the problem.
- C. Stateless alerts are automatically cleared.
- D. Stateful alerts are purged automatically from the alert history.
- E. Stateless alerts can be purged manually from the alert history.
Answer: A,B
NEW QUESTION # 31
Which three true about recovering tables using RMAN? (Choose three.)
- A. RMAN can recover a table after a DDL operation has altered the table structure.
- B. RMAN can recover tables in the SYSTEM tablespace.
- C. RMAN always uses an auxiliary instance.
- D. RMAN can recover tables in the SYSAUX tablespace.
- E. RMAN can recover tables in a standby database.
- F. RMAN can recover tables owed by the SYSTEM user.
- G. RMAN can recover tables owned by the SYS user.
Answer: B,C,D
NEW QUESTION # 32
.Examine the RMAN command: RMAN> CONFIGURE ENCRYPTION FOR DATABASE ON; RMAN> BACKUP DATABASE PLUS ARCHIVELOG; Which prerequisite must be met before accomplishing the backup?
- A. The password for the encryption must be set up.
- B. Oracle wallet for the encryption must be set up.
- C. All the tablespaces in the database must be encrypted
- D. Oracle Database Vault must be enabled.
Answer: B
NEW QUESTION # 33
You must transport the UNIVERSITYtablespace from one database to another.
The UNIVERSITYtablespace 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 UNIVERSITYtablespace metadata using EXPDP.
3. Convert the UNIVERSITYtablespace data fies to the destination platform format using RMANon the source system.
4. Copy the UNIVERSITYtablespace data files to the destination system.
5. Copy the Data Pump dump set to the destination system.
6. Convert the UNIVERSITYtablespace data files to the destination platform format using RMAN on the destination system.
7. Import the UNIVERSITYtablespace 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?
- A. 2, 4, 5, 6, 7
- B. 1, 2, 4, 5, 7, 8
- C. 1, 2, 4, 6, 7, 8
- D. 1, 2, 3, 4, 5, 7, 8
- E. 1, 2, 3, 4, 5, 6, 7, 8
Answer: C
NEW QUESTION # 34
Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)
- A. Only the grid user can perform the upgrade.
- B. The newer version is installed in a separate Oracle Grid Infrastructure home on the same server as the existing version.
- C. The upgrade process will automatically install all mandatory patches for the current version of Oracle Grid Infrastructure.
- D. Existing Oracle Database instances must be shut down before starting the upgrade.
- E. A direct upgrade can be performed only from the immediately preceding Oracle Grid Infrastructure version.
- F. An existing Oracle base can be used.
Answer: B,D,F
NEW QUESTION # 35
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Oracle 1Z0-083 exam, also known as Oracle Database Administration II, is an advanced certification exam designed for database administrators who have already earned the Oracle Database Administration I certification. 1Z0-083 exam is intended to test the skills and knowledge required to manage and maintain an Oracle database in a variety of enterprise-level environments. Successful completion of 1Z0-083 exam confirms that the candidate has a strong understanding of advanced topics related to database administration, such as performance tuning, backup and recovery, and security.
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