Latest [Oct 28, 2021] Oracle 1Z1-083 Exam Practice Test To Gain Brilliante Result
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NEW QUESTION 70
Which two are true about backup set compression using RMAN default compression? (Choose two.)
- A. Unused blocks below the high water mark are backed up.
- B. Compressed backups cannot have a section size defined.
- C. Compression can be done only for locally managed tablespaces.
- D. Compressed backups can be written only to media.
- E. Binary compression adds CPU overhead to backup operations.
Answer: A,E
NEW QUESTION 71
Which three are true about Automatic Workload Repository (AWR), Automatic Database Diagnostic Monitor (ADDM), and the Manageability Monitor (MMON) background process? (Choose three.)
- A. AWR snapshots must be deleted when no longer required by ADDM.
- B. ADDM can recommend extending the buffer cache.
- C. ADDM performs its analysis only when a DBA requests it.
- D. By default, AWR snapshots are automatically purged after eight days.
- E. By default, MMON creates an AWR snapshot every 30 minutes.
- F. ADDM can recommend shrinking the buffer cache.
Answer: B,D,F
NEW QUESTION 72
Which three are true about managing memory components in an Oracle database instance? (Choose three.)
- A. On Line Transaction Processing systems often use less Program Global Area than Decision Support Systems.
- B. Automatically tuned and resized System Global Area components will always revert to their initial sizes after an instance restart.
- C. With Automatic Shared Memory Management, the database instance can increase the Program Global Area size by reducing the System Global Area size.
- D. With Automatic Memory Management, the database instance can increase the System Global Area size by reducing the Program Global Area size.
- E. Automatic Memory Management must be used together with locking the System Global Area into physical memory.
- F. With Automatic Shared Memory Management, the database instance can increase the Large Pool size by reducing the Shared Pool size.
Answer: A,C,F
Explanation:
Explanation/Reference: https://docs.oracle.com/database/121/TGDBA/tune_shared_pool.htm
NEW QUESTION 73
Examine these actions:
1. Create a new database for a recovery catalog.
2. Create a tablespace with sufficient space in the catalog database for the recovery catalog.
3. Configure archivelog mode for the catalog database.
4. Create a user to own the recovery catalog schema with quota on the tablespace that will contain the catalog.
5. Grant the recovery_catalog_owner role to the recovery catalog schema owner.
6. Grant the sysbackup privilege to the recovery catalog schema owner.
Which are the minimum actions that must be performed before executing the create catalog command?
- A. 1,3,4, 5
- B. 1,2,4, 5
- C. 2, 4, 5, 6
- D. 1,2,3,4, 5,6
- E. 2, 4, 5
Answer: A
NEW QUESTION 74
Which two are true about flashback features in Oracle Database 19c and later releases?
- A. Flashback logs are monitored and proactively deleted when beyond the retention period defined in db_flashback_retention_target before there is space pressure.
- B. Flashback logs are automatically purged whenever the value
Of DB_FLASHBACK_RETENTION_TARGET is changed. - C. 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.
- D. Flashback logs are monitored and proactively deleted when beyond the retention period defined in DB_flashback_retention_TARGET only after there is space pressure
- E. Flashback logs are automatically purged when db_flashback_retention_target is set lower than the time they have already been retained.
Answer: A,C
NEW QUESTION 75
Which two are true about Oracle Optimizer Statistics, their use, and their collection?
- A. Statistics collected using DBMS_ATATS always yield the best optimizer result.
- B. The number of table rows is considered when evaluating the cost of accessing a table using an index.
- C. The Statistics Advisor can help recommend the best way to gather statistics.
- D. Index balanced B*Tree height is considered when evaluating the cost of using an index,
- E. The Statistics Advisor generates actions for all recommendations.
Answer: B,E
NEW QUESTION 76
Examine this configuration:
1. CDB1 is a container database running in ARCHIVELOG mode.
2. Multiple uncommitted transactions are running in CDB1.
3. Redo log groups 1 and 2 are INACTIVE.
4. Redo log group 3 is the CURRENT group.
All members of redo log group 3 are lost before it is archived.
Examine these possible steps:
1. SHUTDOWN ABORT
2. STARTUP NOMOUNT
3. STARTUP MOUNT
4. ALTER DATABASE MOUNT
5. RESTORE DATABSE
6. RECOVER DATABASE NOREDO
7. RECOVER DATABASE UNTIL AVAILABLE
8. RESTORE ARCHIVELOG ALL
9. ALTER DATABSE OPEN
10.ALTER DATABASE OPEB RESETLOGS
Choose the minimum required steps in the correct order to recover the database.
- A. 1, 3, 5, 7, 10
- B. 1, 2, 5, 7, 4, 10
- C. 1, 3, 5, 6, 9
- D. 1, 3, 5, 8, 6, 10
- E. 1, 3, 5, 6, 10
Answer: E
NEW QUESTION 77
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 read-only Oracle home
- B. to switch back to the previous Oracle home as part of a rollback operation
- C. to switch an existing Oracle Database home to a newer release of Oracle software on the same server
- D. to switch to a patched Oracle Database home
- E. to switch the Oracle Database home when using a centralized Rapid Home Provisioning server
Answer: A,E
NEW QUESTION 78
Which three actions are performed by the Oracle Preinstallation RPM, oracle-database-server-xxxx- preinstall, for Oracle Grid Infrastructure, where xxxx is the Oracle version and release? (Choose three.)
- A. creating the grid OS user
- B. creating the OSDBA (dba) group
- C. performing checks to ensure minimum configuration requirements for Oracle Grid Infrastructure are met
- D. creating thte oraInventory (oinstall) group
- E. configuring the OS for Oracle Automatic Storage Management shared storage access
- F. creating the oracle OS user
Answer: B,D,E
NEW QUESTION 79
A container database (CDB) contains two pluggable databases PDB1 and PDB2.
The LOCAL_UNDO_ENABLEDdatabase property is set to FALSEin the CDB.
Data file 24 of PDB2was deleted and you need to restore and recover it.
The only RMAN backup that exists was created with the BACKUP DATABASEcommand while connected to CDB$ROOT.
Which three are true? (Choose three.)
- A. Data file 24 can be restored and recovered while connected to CDB$ROOT.
- B. Data file 24 can be recovered while connected to PDB2.
- C. Data file 24 can be recovered only while connected to PDB2.
- D. Data file 24 can be restored only while connected to CDB$ROOT.
- E. Data file 24 can be restored only while connected to PDB2.
- F. Data file 24 can be recovered while connected to CDB$ROOT.
Answer: A,E,F
NEW QUESTION 80
Which three are true about Optimizer Statistics Advisor? (Choose three.)
- A. It can recommend changes to improve the statistics gathering process.
- B. It can be run only manually.
- C. It is part of the DBMS_STATSpackage.
- D. It is part of the DBMS_ADVISORpackage.
- E. It runs automatically every night by default.
- F. It always analyzes all schemas in the database.
Answer: A,C,F
Explanation:
Explanation/Reference: https://oracle-base.com/articles/12c/optimizer-statistics-advisor-12cr2
NEW QUESTION 81
Which two are true about the Oracle dataabse methodology? (Choose two.)
- A. The Oracle Database time model should be used to find the database and instance areas most in need of tuning.
- B. Tuning activities should stop once agreed service levels for performance have been met.
- C. The database instance memory should always be tuned before tuning any file systems.
- D. Tuning activities should stop once the user is satisfied with performance.
- E. SQL statements should always be tuned before tuning any file systems.
- F. The alert log should be used to find the database and instance areas most in need of tuning.
Answer: B,F
Explanation:
Reference:
https://flylib.com/books/en/4.322.1.9/1/
NEW QUESTION 82
Which three actions are performed by Database Upgrade Assistant (DBUA)? (Choose three.)
- A. It sets all user tablespaces to "read-only" before starting the upgrade.
- B. It empties the RECYCLE BIN.
- C. It performs prerequisite checks to verify if the Oracle database is ready for upgrade.
- D. It increases tablespace size, if required, to meet upgrade requirements.
- E. It removes the AUDSYS schema and the AUDIT_ADMIN and AUDIT_VIEWER roles
- F. It recompiles all stored PL/SQL code by using utlrp.sql.
Answer: C,D,F
Explanation:
Reference:
https://oracle-base.com/articles/12c/upgrading-to-12c
NEW QUESTION 83
Which three actions are performed by the Oracle Preinstallation RPM, oracle-database-server-xxxx- preinstall, for Oracle Grid Infrastructure, where xxxx is the Oracle version and release? (Choose three.)
- A. creating the grid OS user
- B. creating the OSDBA (dba) group
- C. performing checks to ensure minimum configuration requirements for Oracle Grid Infrastructure are met
- D. creating thte oraInventory (oinstall) group
- E. configuring the OS for Oracle Automatic Storage Management shared storage access
- F. creating the oracleOS user
Answer: B,D,E
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E11882_01/install.112/e41961/prelinux.htm#CWLIN2932
NEW QUESTION 84
Which three are true about backup, restore, and recovery operations done without using Recovery Manager (RMAN)? (Choose three.)
- A. Oracle data file backups, copied using an O/S utility, can be added to the RMAN catalog as IMAGE COPIES.
- B. Backing up a database in NOARCHIVELOG mode using O/S utilities requires that the database instance be started and the dataabse be in the 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. Oracle archive log backups, copied using an O/S utility, can be added to the RMAN catalog as a backup set.
- F. 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.
- G. 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.
Answer: A,C,D
NEW QUESTION 85
Which two are true about Oracle Optimizer Statistics, their use, and their collection? (Choose two.)
- A. Index balanced B*Tree height is considered when evaluating the cost of using an index.
- B. The Statistics Advisor can help recommend the best way to gather statistics.
- C. The Statistics Advisor generates actions for all recommendations.
- D. Statistics collected using DBMS_STATS always yield the best optimizer result.
- E. The number of table rows is considered when evaluating the cost of accessing a table using an index.
Answer: B,D
NEW QUESTION 86
Oracle Managed Files (OMF) is enabled in a CDB and this command is successfully executed:
Which three are true?
- A. Application PDBs that are subsequently created in the APP1 application container will be cloned from APP1$SEED.
- B. A default service Is created for the application root APP1.
- C. APP1 can never be unplugged.
- D. An application root PDB is created for APP1.
- E. An application seed PDB Is created for APP1.
- F. Application PDBs that are subsequently created in the APP1 application container will be cloned from PDB$SEED.
Answer: A,D,E
NEW QUESTION 87
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