Oracle 1Z0-083 Practice Verified Answers - Pass Your Exams For Sure! [2023]
Valid Way To Pass Oracle Database 19c's 1Z0-083 Exam
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NEW QUESTION 17
A database is configured in ARCHIVE LOG mode. A full RMAN backup exists but no control file backup to trace has been taken. A media failure has occurred. In which two scenarios is incomplete recovery required? (Choose two.)
- A. after losing a SYSAUX tablespace data file
- B. after losing all members of an INACTIVE online redo log group
- C. after losing an UNDO tablespace that is in use
- D. after losing all members of the CURRENT online redo log group
- E. after losing all copies of the control file
Answer: D,E
NEW QUESTION 18
Which two are true about gathering optimizer statistics? (Choose two.)
- A. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics only in CDB$ROOT.
- B. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open pluggable databases (PDBs)
- C. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open PDBs except PDB$SEED.
- D. System statistics can be gathered only while connected to CDB$ROOT.
- E. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to a PDB opened in read/write mode gathers object statistics for that PDB.
Answer: B,E
Explanation:
https://mikedietrichde.com/2016/10/21/gather-fixed-objects-stats-in-pdbs-as-well/#:~:text=Yes%2C%20you'll%20have%20to,independently%20from%20the%20CDB%24ROOT.&text=Oracle%20Database%20automatically%20gathers%20fixed,Automatic%20Optimizer%20Statistics%20Collection%E2%80%9C) .
Reference:
https://docs.oracle.com/en/database/oracle/oracle-database/20/arpls/DBMS_STATS.html
NEW QUESTION 19
Which two are true about gathering optimizer statistics? (Choose two.)
- A. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics only in CDB$ROOT.
- B. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open pluggable databases (PDBs)
- C. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open PDBs except PDB$SEED.
- D. System statistics can be gathered only while connected to CDB$ROOT.
- E. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to a PDB opened in read/write mode gathers object statistics for that PDB.
Answer: B,E
Explanation:
Explanation
https://mikedietrichde.com/2016/10/21/gather-fixed-objects-stats-in-pdbs-as-well/#:~:text=Yes%2C%20you'll%2
.
NEW QUESTION 20
Choose two. Which two are true about memory advisors?
- A. If Automatic Memory Management is enabled, no memory advisors are available.
- B. If Automatic Memory Management is enabled, the Shared Pool Advisor and Buffer Cache Advisor are available to set the maximum size for these individual System Global Area components.
- C. If Automatic Shared Memory Management is enabled, both the SGA Advisor and PGA Advisor are always available.
- D. If Manual Shared Memory Management is enabled, only the Shared Pool Advisor and Buffer Cache Advisor are available.
- E. All memory advisors use data from Automatic Workload Repository.
Answer: C,E
NEW QUESTION 21
Examine this command:
$ rhpctl move database -sourcehorae Oracle_horne_path -destinationhome Oracle_home_path For which two purposes can you use this command?
- A. to switch to a patched Oracle Database home
- B. to switch the Oracle Database home when using a centralized Rapid Home Provisioning server
- C. to switch back to the previous Oracle home as part of a rollback operation
- D. to switch an existing Oracle Database home to a newer release of Oracle software on the same server
- E. to switch to a read-only Oracle home
Answer: B,E
NEW QUESTION 22
Which two are true about OS groups and users for Oracle Grid Infrastructure and the Oracle Relational Database Management System (RDBMS)? (Choose two.)
- A. By default, members of the OSASM group can access Automatic Storage Management and RDBMS instances.
- B. The Oracle Grid Infrastructure owner owns Oracle Restart and Oracle Automatic Storage Management binaries.
- C. The Oracle Grid Infrastructure owner must have OSOPER, OSBACKUPDBA, and OSKMDBA as secondary groups.
- D. The primary group for the Oracle Grid Infrastructure and Oracle Database owners must be the Oracle Inventory group.
- E. The same OSDBA group must be used for Automatic Storage Management and the Oracle Database.
- F. The Oracle Grid Infrastructure installation must be owned by the grid user.
Answer: B,D
NEW QUESTION 23
Which three are true about Automatic Workload Repository (AWR), Automatic Database Diagnostic Monitor (ADDM), and the Manageability Monitor (MMON) background process?
- A. ADDM performs its analysis only when a DBA requests it.
- B. ADDM can recommend shrinking the buffer cache.
- C. ADDM can recommend extending the buffer cache.
- D. By default, AWR snapshots are automatically purged after eight days.
- E. AWR snapshots must be deleted when no longer required by ADDM.
- F. By default, MMON creates an AWR snapshot every 30 minutes.
Answer: A,B,D
NEW QUESTION 24
Which three are true about managing memory components in an Oracle database instance? (Choose three.)
- A. Automatically tuned and resized System Global Area components will always revert to their initial sizes after an instance restart.
- B. With Automatic Shared Memory Management, the database instance can increase the Large Pool size by reducing the Shared Pool size.
- C. On Line Transaction Processing systems often use less Program Global Area than Decision Support Systems.
- D. Automatic Memory Management must be used together with locking the System Global Area into physical memory.
- E. With Automatic Memory Management, the database instance can increase the System Global Area size by reducing the Program Global Area size.
- F. With Automatic Shared Memory Management, the database instance can increase the Program Global Area size by reducing the System Global Area size.
Answer: B,C,F
Explanation:
Reference:
https://docs.oracle.com/database/121/TGDBA/tune_shared_pool.htm
NEW QUESTION 25
Which three are true about an application container?
- A. It can contain multiple applications.
- B. It must have an application seed PDB.
- C. It must have an application root PDB.
- D. An application PDB can belong to multiple application containers.
- E. Two application containers can share an application seed PDB.
- F. It can contain a single application.
Answer: A,E,F
NEW QUESTION 26
Which two are true about Optimizer Statistics? (Choose two.)
- A. They provide real-time data about schema objects.
- B. They are gathered by the SQL Tuning Advisor.
- C. They can be gathered by the DBMS_STATS package.
- D. They are ignored by Optimizer if they are stale.
- E. By default, they are automatically gathered by a maintenance job.
Answer: C,E
NEW QUESTION 27
Which three are true in Oracle 19c and later releases? (Choose three.)
- A. Unified Auditing can be configured to audit only events that are issued directly by an audited user.
- B. All the Oracle-supplied accounts are Schema Only accounts.
- C. Privilege Analysisisincluded in Oracle Enterprise Edition and no longer requires Database Vault. E) Unified Auditing can be configured to audit only events that are issued indirectly by an audited user.
- D. If the password file location changes, then the new location is used automatically by the Oracle Server.
- E. Schema Only accounts can be granted administrator privileges.
Answer: C,E
NEW QUESTION 28
Choose two. When backing up to the Oracle Fast Recovery Area (FRA), you determine that the backup takes too long and suspect a performance bottleneck. Which two are true about diagnosing and tuning these problems?
- A. Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECOND are a potential performance bottleneck when synchronous I/O is used.
- B. If an RMAN BACKUP VALIDATE command takes noticeably less time than an actual backup, then write I/O is a likely bottleneck.
- C. If an RMAN BACKUP VALIDATE command takesroughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.
- D. Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITS are a potential performance bottleneck when asynchronous I/O is used.
- E. If an RMAN BACKUP VALIDATE command takesroughly the same time as an actual backup, then read I/O is a likely bottleneck.F
Answer: A,B,D
NEW QUESTION 29
Which two are true about various Oracle security and auditing capabilities?
- A. Unified auditing can be automatically synchronized to all application PDBs in an application container.
- B. Application-common TSDP policies are always container specific.
- C. Application-common Transparent Security Data Protection (TSDP) policies can be created only within an application install/patch begin-end block.
- D. Fine-grained auditing (FGA) policies in an application root are automatically synchronized to all application PDBs contained in the application container.
- E. Application-common OLS policies can be created in an application root inside an install/patch BEGIN-END block.
Answer: C,E
NEW QUESTION 30
Which two are true about instance recovery? (Choose two.)
- A. It is performed automatically while the database remains in MOUNT state. Then the database is opened.
- B. It is performed automatically after the database is opened; however, blocks requiring recovery are not available until they are recovered.
- C. It is not possible if an archived log is missing.
- D. It is performed by the Recovery Writer (RVWR) background process.
- E. Setting FAST_START_MTTR_TARGET to a lower value reduces instance recovery time by causing dirty buffers to be written to disk more frequently, thereby reducing the number of I/Os needed during instance recovery.
- F. Setting FAST_START_MTTR_TARGET to a higher value reduces instance recovery time by causing the log writer to write more frquently, thereby reducing the number of I/Os needed during instance recovery.
Answer: A,F
NEW QUESTION 31
Which two are true about duplicating pluggable databases (PDBs) with RMAN? (Choose two.)
- A. CDB$ROOT and PDB$SEED are automatically duplicated.
- B. A user with SYSDBA or SYSBACKUP must be logged in with RMAN to the PDB to duplicate it.
- C. The auxiliary instance is automatically created with ENABLE_PLUGGABLE_DATABASE = TRUE.
- D. All tablespaces belonging to a PDB must be duplicated when duplicating the PDB.
- E. Two or more PDBs can be duplicated with the same RMAN DUPLICATE command.
Answer: A,E
NEW QUESTION 32
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. Database Replay
- B. Automatic Database Diagnostic Monitor (ADDM) Compare Period report
- C. Active Session History (ASH) report
- D. SQL Performance Analyzer
Answer: B
NEW QUESTION 33
choose two Which two are true about RMAN image copies?
- A. They can only be written to disk.
- B. They can be encrypted using Transparent Data Encryption (TDE).
- C. They can be used as a level 0 incremental backup.
- D. They are the only backup option available for databases in NOARCHIVELOG mode.
- E. They can be used as a level 1 incremental backup.
Answer: A,C
NEW QUESTION 34
A database is configured in ARCHIVELOGmode.
A full RMAN backup exists but no control file backup to trace has been taken.
A media failure has occurred.
In which two scenarios is incomplete recovery required? (Choose two.)
- A. after losing all members of an INACTIVE online redo log group
- B. after losing a SYSAUXtablespace data file
- C. after losing all members of the CURRENTonline redo log group
- D. after losing all copies of the control file
- E. after losing an UNDOtablespace that is in use
Answer: A,D
NEW QUESTION 35
Examine this configuration:
* CDB1 is a container database.
* PDB1 and PDB2 are pluggable databases in CDB1.
* PDB1 and PDB2 are OPEN in READ WRITE mode.
You execute these commands successfully:
Which two are true? (Choose two.)
- A. CDB1 is in MOUNT state
- B. Uncommitted transactions in PDB1 have been rolled back.
- C. PDB1 is closed.
- D. CDB1 is shut down.
- E. Uncommitted transactions in CDB1 and PDB1 have been rolled back.
Answer: A,C
NEW QUESTION 36
Which two are true about the Oracle dataabsemethodology? (Choose two.)
- A. The alert log should be used to find the database and instance areas most in need of tuning.
- B. The database instance memory should always be tuned before tuning any file systems.
- C. Tuning activities should stop once the user is satisfied with performance.
- D. The Oracle Database time model should be used to find the database and instance areas most in need of tuning.
- E. SQL statements should always be tuned before tuning any file systems.
- F. Tuning activities should stop onceagreed service levels for performance have been met.
Answer: A,F
NEW QUESTION 37
Examine this configuration:
* CDB1 is a container database.
* PDB1 and PDB2 are pluggable databases in CDB1.
* PDB1 and PDB2 are OPEN in READ WRITE mode.
You execute these commands successfully:
Which two are true? (Choose two.)
- A. PDB1 is closed.
- B. Uncommitted transactions in PDB1 have been rolled back.
- C. CDB1 is shut down.
- D. Uncommitted transactions in CDB1 and PDB1 have been rolled back.
- E. CDB1 is in MOUNT state
Answer: A,B
NEW QUESTION 38
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Understanding functional and technical aspects of Oracle Database Administration II Exam Number: 1Z0-083
The following will be discussed in the ORACLE 1Z0-083 exam dumps:
- Transporting Data - Oracle Database: Backup and Recovery Workshop
- Patching Grid Infrastructure and Oracle Database - Oracle Database: Deploy, Patch and Upgrade Workshop
- Upgrading to Oracle Grid Infrastructure - Oracle Database: Deploy, Patch and Upgrade Workshop
- Interpret the RMAN message output
- Upgrade Oracle Grid Infrastructure
- Patch Grid Infrastructure and Oracle Database
- Image and RPM based Database Installation
- Oracle Database 18c: New Features - Oracle Database: Deploy, Patch and Upgrade Workshop
Oracle 1Z0-083 Pre-Exam Practice Tests | Actual4Labs: https://www.actual4labs.com/Oracle/1Z0-083-actual-exam-dumps.html
1Z0-083 practice test questions, answers, explanations: https://drive.google.com/open?id=1ZmfY7-UYaSJqlKWXDVXeYTGPS11THbxO