Ultimate Guide to Prepare 1Z0-083 Certification Exam for Oracle Database 19c in 2021
Use Real 1Z0-083 Dumps - Oracle Correct Answers updated on 2021
NEW QUESTION 16
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 the user is satisfied with performance.
- C. The database instance memory should always be tuned before tuning any file systems.
- D. Tuning activities should stop once agreed service levels for performance have been met.
- 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: D,F
NEW QUESTION 17
Which three are true about patchsets? (Choose three.)
- A. Installing a patchset is considered an "upgrade".
- B. They are installed via OPatch or OPatchAuto.
- C. They can be applied in a rolling fashion for Clusterware and the databases.
- D. They can introduce new features.
- E. They are only released quarterly.
- F. A base release is not needed to install patchsets.
Answer: A,E,F
NEW QUESTION 18
A database is configured in archivelog 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?
- A. after losing all members of the current online redo log group
- B. after losing an undo tablespace that is in use
- C. after losing all copies of the control file
- D. after losing a sysaux tablespace data file
- E. after losing all members of an inactive online redo log group
Answer: C,D
NEW QUESTION 19
Which three are true in Oracle 19c and later releases? (Choose three.)
- A. Schema Only accounts can be granted administrator privileges.
- B. Unified Auditing can be configured to audit only events that are issued indirectly by an audited user.
- C. Privilege Analysis is included in Oracle Enterprise Edition and no longer requires Database Vault.
- D. If the password file location changes, then the new location is used automatically by the Oracle Server.
- E. All the Oracle-supplied accounts are Schema Only accounts.
- F. Unified Auditing can be configured to audit only events that are issued directly by an audited user.
Answer: A,C,E
Explanation:
Explanation
Explanation/Reference: https://mandysandhu.com/2018/04/30/oracle-database-18c-schema-only-accounts/
NEW QUESTION 20
Which three are true about requirements for various flashback operations?
- A. flashback data archive requires undo to store all versions of all rows of a table being tracked.
- B. flashback version query requires undo to retrieve all versions of a row that existed between two points in time.
- C. flashback drop requires undo to retrieve all versions of a row that existed between two points in time.
- D. flashback drop requires that the recyclebin parameter be set to on.
- E. flashback transaction query requires undo to retrieve all versions of a row that existed between two points in time.
- F. flashback version query requires that the recyclebin parameter be set to on.
Answer: A,E,F
NEW QUESTION 21
Which are three of the steps taken by Database Configuration Assistant (DBCA) to clone a remote pluggable database (PBD) starting from Oracle 19c? (Choose three.)
- A. creating a database link from CDB$ROOT in the local database to the PDB in the remote system that is to be cloned
- B. creating a new empty PDB in the local database from PDB$SEED
- C. opening the cloned PDB
- D. creating a database link from CDB$ROOT in the local database to CDB$ROOT in the remote system that is to be cloned
- E. automatically dropping the database link to the remote database if it already exists
- F. creating a database link from CDB$ROOT in the remote database to the PDB in the local database
- G. creating a database link from CDB$ROOT in the remote database to be cloned to CDB$ROOT in the local database
Answer: D,E,F
NEW QUESTION 22
A database is configured in ARCHIVELOG mode.
Full RMAN backups are taken and no backup to trace has been taken of the control file. A media failure has occurred.
In which two scenarios is complete recovery possible? (Choose two.)
- A. after losing an archived log from after the most recent backup
- B. after losing the SYSTEM tablespace
- C. after losing all copies of the control file
- D. when any archived log from, before, or after the most recent backup is corrupt.
- E. after losing an archived log from before the most recent backup
Answer: B,E
NEW QUESTION 23
Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)
- A. The upgrade process will automatically install all mandatory patches for the current version of Oracle Grid Infrastructure.
- B. Only the griduser can perform the upgrade.
- C. An existing Oracle base can be used.
- D. The newer version is installed in a separate Oracle Grid Infrastructure home on the same server as the existing version.
- E. Existing Oracle Database instances must be shut down before starting the upgrade.
- F. A direct upgrade can be performed only from the immediately preceding Oracle Grid Infrastructure version.
Answer: A,B,E
Explanation:
Explanation/Reference: https://docs.oracle.com/database/121/CWLIN/procstop.htm#CEGEDCDB
NEW QUESTION 24
Which two are true in Oracle 19c and later releases?
- A. Schema Only accounts can be granted administrator privileges.
- B. Unified Auditing can be configured to audit only events that are issued indirectly by an audited user.
- C. All the Oracle-supplied accounts are Schema Only accounts.
- D. If the password file location changes, then the new location is used automatically by the Oracle Server.
- E. Unified Auditing can be configured to audit only events that are issued directly by an audited user.
Answer: A,D
NEW QUESTION 25
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 must have OSOPER, OSBACKUPDBA, and OSKMDBA as secondary groups.
- C. The Oracle Grid Infrastructure owner owns Oracle Restart and Oracle Automatic Storage Management binaries.
- D. The same OSDBA group must be used for Automatic Storage Management and the Oracle Database.
- E. The Oracle Grid Infrastructure installation must be owned by the grid user.
- F. The primary group for the Oracle Grid Infrastructure and Oracle Database owners must be the Oracle Inventory group.
Answer: C,F
NEW QUESTION 26
A database is configured in ARCHIVELOGmode.
Full RMAN backups are taken and no backup to trace has been taken of the control file.
A media failure has occurred.
In which two scenarios is complete recovery possible? (Choose two.)
- A. after losing an archived log from after the most recent backup
- B. after losing the SYSTEMtablespace
- C. after losing all copies of the control file
- D. when any archived log from, before, or after the most recent backup is corrupt.
- E. after losing an archived log from before the most recent backup
Answer: D,E
NEW QUESTION 27
Which two are true about Rapid Home Provisioning (RHP), which has been available since Orcale 18c? (Choose two.)
- A. It can be used to provision middleware.
- B. It cannot be used to upgrade Oracle Database homes.
- C. It can be used to patch Grid Infrastructure homes containing Oracle Restart.
- D. It is an Oracle Database service
- E. It can be used to provision applications.
Answer: A,C
Explanation:
Reference:
https://www.oracle.com/assets/rapid-home-provisioning-2405191.pdf
NEW QUESTION 28
Which two are true about the Oracle dataabsemethodology? (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 the user is satisfied with performance.
- C. The database instance memory should always be tuned before tuning any file systems.
- D. Tuning activities should stop onceagreed service levels for performance have been met.
- 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: D,F
NEW QUESTION 29
Which two are true about RMAN encryption? (Choose two.)
- A. RMAN can encrypt the Oracle Database password file.
- B. RMAN encryption keys are stored in a database keystore.
- C. The SET ENCRYPTION command overrides encryption settings specified by the CONFIGURE ENCRYPTION command.
- D. Dual-mode encrypted backups can be restored only if both the password and the keystore used for encryption are available.
- E. Password encryption can be persistently configured using the CONFIGURE ENCRYPTION command.
Answer: C,D
NEW QUESTION 30
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. Disable FORCE LOGGING for the database.
- C. Enable asynchronous disk I/O.
- D. Increase the size of tape I/O buffers.
- E. Increase the level of RMAN multiplexing.
Answer: A,E
NEW QUESTION 31
Which two are true about gathering optimizer statistics?
- A. System statistics can be gathered only while connected to 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 only in cdbSroot.
- D. Executing dbms_stats.gather_database_stats while connected to cdb$root gathers object statistics in all open PDBs except pdb$seed.
- E. Executing dbms_stats.gather_database_stats while connected to a PDBopened in read/write mode gathers object statistics for that PDB.
Answer: B,C
NEW QUESTION 32
Which two are true about various Oracle security and auditing capabilities?
- A. Fine-grained auditing (FGA) policies in an application root are automatically synchronized to all application PDBs contained in the application container.
- B. Unified auditing can be automatically synchronized to all application PDBs in an application container.
- C. Application-common Transparent Security Data Protection (TSDP) policies can be created only within an application install/patch begin-end block.
- D. Application-common OLS policies can be created in an application root inside an install/patch BEGIN-END block.
- E. Application-common TSDP policies are always container specific.
Answer: C,D
NEW QUESTION 33
In performance management, which two factors might reduce the ability of an application to scale to a large number of users? (Choose two.)
- A. the number of tablespaces containing tables updated by a transaction
- B. the number of data files containing extents belonging to tables updated by a transaction
- C. poorly trained users who do not commit transactions
- D. issuing multiple savepoints during a transaction
- E. poorly written SQL
Answer: A,E
NEW QUESTION 34
Which three are true about RMAN persistent configuration settings, administration, and their effects? (Choose three.)
- A. Backup older than the recovery window retention policy are always deleted automatically if the backup location has insufficient space.
- B. The V$RMAN_CONFIGURATION view displays only settings with values that have been modified.
- C. The RMAN SHOW ALL command displays only settings with nondefault values.
- D. Backups written to the fast recovery area (FRA) that are oboslete based on the redundancy retention policy can be deleted automatically to free space.
- E. A DBA must specify either a redundancy retention policy or a recovery window retention policy.
- F. A target database's persistent RMAN configuration settings are always stored in the target's control file
- G. A target database's persistent RMAN configuration settings are always synchronized automatically with the RMAN catalog.
Answer: B,D,F
NEW QUESTION 35
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