Tested Material Used To 1Z0-083 Test Engine Exam Questions in here [Jul-2021]
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NEW QUESTION 86
Which two are true about the character sets used in an Oracle database? (Choose two.)
- A. Single-byte character sets provide better performance than multibyte character sets.
- B. Unicode enables information from any language to be stored using a single character set.
- C. Unicode is the only supported character set for Oracle databases created using Database Configuration Assistant (DBCA).
- D. Single-byte character sets always use 7-bit encoding schemes.
- E. Single-byte character sets always use 8-bit encoding schemes.
- F. Multibyte character sets allow more efficient space utilization than single byte character sets.
Answer: A,B
Explanation:
Reference:
https://docs.oracle.com/database/121/NLSPG/ch2charset.htm#NLSPG166
NEW QUESTION 87
Examine these queries and their output:
An online RMAN backup of the CDB was taken an hour before Restore Point ri was created.
You want to recover PDB1 to Restore Point R1.
How do you achieve this?
- A. This cannot be done due to the lack of a clean restore point.
- B. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by Using RMAN while connected to CDB$ROOT.
- C. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by Using SQL while connected to PDB1.
- D. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by Using RMAN while connected to PDB1.
- E. Execute FLASHBACK PLUGGABLE DATABASE PDB1 TO RESTORE POINT R1 by Using SQL while connected to CDB$ROOT.
Answer: C
NEW QUESTION 88
For which two requirements can you use the USER_TABLESPACE clause with the CREATE PLUGGABLE DATABASE command? (Choose two.)
- A. to exclude a temp tablespace when plugging in a PDB
- B. to specify the list of user tablespaces to include when moving a non-CDB to a PDB
- C. to include specific user tablespaces only when relocating a PDB
- D. to exclude all tablespaces except SYSTEM, SYSAUX, and TEMP when plugging in a PDB
- E. to specify the list of tablespaces to include when creating a PDB from the CDB seed
- F. to specify a default tablespace in a PDB cloned from another PDB in the same CDB.
Answer: B,E
NEW QUESTION 89
A database is configured in archivelog mode.
Full RMAN backups are taken daily and no backup to trace has been taken of the control file.
A media failure has occurred.
In which two scenarios are complete recovery possible?
- A. after losing an archived log from after the most recent backup
- B. when any archived log from, before, or after the most recent backup is corrupt
- C. after losing all copies of the control file
- D. after losing the system tablespace
- E. after losing an archived log from before the most recent backup
Answer: C,E
NEW QUESTION 90
Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases?
- A. A snapshot copy PDB can be created from a stand-alone clone PDB
- B. A PDB snapshot is always a full copy of the source PDB
- C. A PDB snapshot depends on a storage snapshot which can only be stored on specific file systems
- D. A snapshot copy PDB depends on a storage snapshot which can only be stored on specific file systems
- E. A snapshot copy PDB depends on a storage snapshot which can be stored on any file system
- F. A PDB snapshot is always a sparse copy of the source PDB
- G. A PDB snapshot depends on a storage snapshot which can be stored on any file system
Answer: C,F
NEW QUESTION 91
Which three are true about managing memory components in an Oracle database instance? (Choose three.)
- A. With Automatic Shared Memory Management, the database instance can increase the Large Pool size by reducing the Shared Pool size.
- B. Automatic Memory Management must be used together with locking the System Global Area into physical memory.
- C. With Automatic Shared Memory Management, the database instance can increase the Program Global Area size by reducing the System Global Area size.
- D. Automatically tuned and resized System Global Area components will always revert to their initial sizes after an instance restart.
- E. With Automatic Memory Management, the database instance can increase the System Global Area size by reducing the Program Global Area size.
- F. On Line Transaction Processing systems often use less Program Global Area than Decision Support Systems.
Answer: A,C,F
NEW QUESTION 92
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
NEW QUESTION 93
You are managing this configuration:
CDB1 is a container database.
PDB1 and PDB2 are two pluggable databases in CDB1.
USER1.EMP is a table in PDB1 and USER2.DEPT is a table in PDB2.
CDB1 user SYS executes these commands after connecting successfully to PDB2:
Which two are true? (Choose two.)
- A. The insert on USER2.DEPT is a recursive autonomous transaction by the child session and is committed.
- B. The insert on USER2.DEPT fails because of the active transaction in the parent container.
- C. The insert on USER2.DEPT is uncommitted.
- D. The inserts on USER1.EMP remain uncommitted when the session connected to PDB2.
- E. The inserts on USER1.EMP were committed when the session inserted a row into USER2.DEPT.
- F. The inserts on USER1.EMP were rolled back when the session connected to PDB2.
- G. The inserts on USER1.EMP were committed when the session connected to PDB2.
Answer: C,G
NEW QUESTION 94
Oracle Managed Files (OMF) is enabled in a CDB and this command is successfully executed:
Which three are true? (Choose three.)
- A. APP1 can never be unplugged.
- B. An application root PDB is created for APP1.
- C. Application PDBs that are subsequently created in the APP1 application container will be cloned from PDB$SEED.
- D. Application PDBs that are subsequently created in the APP1 application container will be cloned from APP1$SEED.
- E. A default service is created for the application root APP1.
- F. An application seed PDB is created for APP1.
Answer: C,D,F
NEW QUESTION 95
Which three are true about Rapid Home Provisioning of Oracle software? (Choose three.)
- A. It can be used to patch existing Oracle software installations.
- B. It can be used to create templates of Oracle homes as gold images of only Oracle databases.
- C. It can be used to deploy new homes without disrupting active databases.
- D. It can be used only on nodes with Oracle Grid Infrastructure installed.
- E. It can be used to create a single-instance Oracle Database in an already-installed Oracle home.
- F. It can be used to upgrade only single-instance databases running on Oracle Restart.
Answer: A,B,D
NEW QUESTION 96
Which three are true about using Database Resource Manager in an Oracle multitenant environment?
(Choose three.)
- A. PDB-level resource plans can limit uncommitted UNDO per consumer group.
- B. A PDB-level resource plan can limit session PGA memory.
- C. A CDB-level resource plan is mandatory when using PDB-level resource plans.
- D. A CDB-level resource plan can limit PDB UNDO use.
- E. A CDB-level resource plan can limit PDB CPU utilization.
- F. A CDB-level resource plan can limit session CPU utilization.
Answer: C,D,F
NEW QUESTION 97
Which two are true about Oracle instance recovery? (Choose three.)
- A. Recovery reads redo until the end of the redo thread. SMON rollsback any dead transactions, and then the datanase is opened.
- B. Recovery begins from the last checkpoint position that was recorded in the control file by the checkpoint process (CKPT).
- C. Recovery begins from the start of any ACTIVE redo log group or the start of the CURRENT log group if no other group is ACTIVE.
- D. Recovery reads redo until the end of the redo thread, and then opens the database. SMON then rolls back any dead transactions.
- E. Recovery begins from the last checkpoint position that wascalculated by the Database Writer before instance failure.
- F. Recovery begins from the beginning of the CURRENT redo log group.
Answer: A,D,E
NEW QUESTION 98
Which two are true about RMAN duplexed backup sets?
- A. A duplexed backup set always uses twice as many SBT channels as a non-duplexed backup set for the same number of files.
- B. A non-duplexed backup set written to SBT can be duplexed to tape by backing up the backup set that is already on tape.
- C. A non-duplexed backup set written to SBT can be duplexed to disk by backing up the backup set that is already on tape.
- D. A non-duplexed backup set written to disk can be duplexed to tape by backing up the backup set that is already on disk.
- E. A non-duplexed backup set written to disk can be duplexed to disk by backing up the backup set that is already on disk.
- F. A duplexed backup set uses the same number of SBT channels as a non-duplexed backup set for the same number of files.
Answer: A,F
NEW QUESTION 99
Oracle Managed Files (OMF) is enabled in a CDB and this command is successfully executed:
Which three are true? (Choose three.)
- A. APP1 can never be unplugged.
- B. An application root PDB is created for APP1.
- C. Application PDBs that are subsequently created in the APP1 application container will be cloned from PDB$SEED.
- D. Application PDBs that are subsequently created in the APP1 application container will be cloned from APP1$SEED.
- E. A default service is created for the application root APP1.
- F. An application seed PDB is created for APP1.
Answer: C,D,F
NEW QUESTION 100
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 and the ASM instances are started.
- B. Only the ORCL database instance is started.
- C. Only the ORCL database instance, the Oracle ASM instance, and the +DATA and +FRA disk groups are started.
- D. Only the ORCL database 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: C
NEW QUESTION 101
Which four are true about duplicating a database using Recovery Manager (RMAN)? (Choose four.)
- A. A backup of the target database is always required.
- B. A connection to an auxiliary instance is always required.
- C. Duplication can be done by having the auxiliary database instance pull backup sets from the target database instance.
- D. A new DBID is always created for the duplicated database.
- E. A subset of the target database can be duplicated.
- F. A connection to the target database instance is always required.
- G. A connection to the recovery catalog instance is always required.
- H. Duplication can be done by having the target database instance push copies to the auxiliary database instance.
Answer: B,C,E,H
Explanation:
A duplicate database is a copy of your target database. With the FOR STANDBY clause, it keeps the same unique database identifier(DBID); If FOR STANDBY not specified it creates a new DBID. The duplicate database can include the same content or only a subset from the source database. It can be in the same host or a separate host. The principal work of the duplication is performed by the auxiliary channels.These channels correspond to a server session on the auxiliary instance on the destination host for backup based duplication. For active database duplication the target channels perform the work of pushing data file copies to the auxiliary instance (if number of allocated target channels is greater than the number of allocated auxiliary channels).
NEW QUESTION 102
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