Updated 1Z0-083 Dumps Questions Are Available [2022] For Passing Oracle Exam
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What is Oracle Database Administration II Exam Number: 1Z0-083 Certification Exam and Retake policy
Oracle Cloud Certification credentials are only valid for a period of 18 months from the date you earn the credential. The certification will become inactive at the end of 18 months. However, for Oracle candidates, it is necessary to hold an active certification in order to have access to various certification benefits including, using Oracle certification logos, certificates, scoring reports, digital badges, and certification verification.
To stay current, candidates have to re-certify themselves with the latest version of the exam. Oracle Cloud Certifications include various titles with levels that are Oracle Certified Associate, Specialist, and Professional. Moreover, the Oracle Cloud Certifications are updated continuously throughout the year for keeping current with major product and service releases and re-released on an annual basis with a new title.
NEW QUESTION 162
Which two are true about RMAN Multisection backups when a very large data file is divided into four sections?
(Choose two.)
- A. Each of the file sections must be processed serially.
- B. The four sections can be created serially.
- C. The four sections must be contained in backup sets.
- D. The four sections can be created in parallel.
- E. The four sections must be image copies.
Answer: C,D
NEW QUESTION 163
Which three are true about the tools for diagnosing Oracle Database failure situations? (Choose three.)
- A. Flashback commands help with repairing physical errors.
- B. The Data Recovery Advisor uses the ADR.
- C. The ADR command-line utility (ADRCI) can package incident information to send to Oracle Support.
- D. The ADR can store metadata in an Oracle Database repository.
- E. RMAN can always repair corrupt blocks.
- F. The Automatic Diagnostic Repository (ADR) has a separate home directory for each instance of each Oracle product that is installed and uses it.
Answer: D,E,F
NEW QUESTION 164
How do you configure a CDB for local undo mode?
- A. Open the CDB instance in upgrade mode. In cdb$root, execute alter database local undo on, and then restart the CDB instance.
- B. Open the CDB instance in restricted mode. In cdb$root, execute alter database local undo on. create an undo tablespace in each PDB, and then restart the CDB instance
- C. Open the CDB instance in restricted mode. In cdb$root, drop the undo tablespace. Execute alter database local undo on in each PDB, and then restart the CDB instance.
- D. Open the CDB instance in upgrade mode. In each PDB, execute alter database local undo on, create an undo tablespace, and then restart the CDB instance.
- E. Open the CDB in read-only mode. In cdb$root, execute alter database local undo on, and then change the CDB to read/write mode.
Answer: C
NEW QUESTION 165
Choose three. Which three are true about using Database Upgrade Assistant (DBUA) to upgrade a database?
- A. The database must be opened in read-only mode.
- B. Multiple databases with the same ORACLE_HOME can be upgraded simultaneously.
- C. The Pre-Upgrade Information Tool script is executed by DBUA.
- D. A whole database backup must exist before upgrade.
- E. All pluggable databases are automatically upgraded as part of a container database upgrade.
- F. DBUA must be launched from the target Oracle Home.
Answer: C,E,F
NEW QUESTION 166
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. Uncommitted transactions in CDB1 and PDB1 have been rolled back.
- B. CDB1 is in MOUNT state
- C. CDB1 is shut down.
- D. Uncommitted transactions in PDB1 have been rolled back.
- E. PDB1 is closed.
Answer: D,E
NEW QUESTION 167
Choose the best answer. You want to transport the UNIVERSITY tablespace from one database to another. The UNIVERSITY tablespace is currently open read/write. The source and destination platforms have the same endian Examine this list of steps:. 1. Make the UNIVERSITY tablespace read-only on the source 2. Export the UNIVERSITY tablespace metadata using EXPDP. 3. Create a cross-platform backup set from the UNIVERSITY source system, using an RMAN command that includes the DATAPUMP clause. 4. Copy the cross-platform backup sets to the destination system. 5. Copy the Data Pump dump set from the source to the destination system. 6. Restore the cross-platform backup set on the destination system using an RMAN command that includes the DATAPUMP clause. 7. Import the UNIVERSITY tablespace metadata using IMPDP. 8. Make the UNIVERSITY tablespace read/write on the destination system. Which are the minimum number of steps required, in the correct order, to transport the UNIVERSITY tablespace?
- A. 3,4,6
- B. 1,2,3,4,5,6,7,8
- C. 2,3,4,5,6,7
- D. 1,3,4,6,8
Answer: A
NEW QUESTION 168
Examine this configuration:
1. CDB1 is a container database.
2. COMMON_USER_PREFIX is set to an empty string.
3. PDB1 is a pluggable database in CDB1.
4. APP1_ROOT is an application container in CDB1.
5. APP1_PDB1 is an application PDB in APP1_ROOT.
You execute these commands:
$ sqlplus sys/oracle@localhost:1521/cdb1 as sysdba
SQL> CREATE ROLE role1 CONTAINER=CURRENT;
What is true?
- A. ROLE1 will be created only in CDB$ROOT.
- B. It will return an error because creation of a local role is not allowed in CDB$ROOT.
- C. ROLE1 will be created in CDB$ROOT, PDB1, APP1_ROOT, and APP1_PDB1.
- D. ROLE1 will be created only in CDB$ROOT and APP1_ROOT.
- E. It will return an error because common roles must start with C##.
Answer: A
NEW QUESTION 169
While backing up to the Oracle Fast Recovery Area (FRA), you determined the backup is taking too long and suspect a performance bottleneck.
Which three are true about diagnosing and tuning these problems? (Choose three.)
- A. Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using asynchronous I/O/
- B. If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then read I/O is a likely bottleneck.
- C. Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITS are a potential performance bottleneck when asynchronous I/O is used.
- D. Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using synchronous I/O.
- E. If an RMAN BACKUP VALIDATE command takes noticeably less than an actual backup, then write I/O is a likely bottleneck.
- F. Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECOND are a potential performance bottleneck when synchronous I/O is used.
- G. If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.
Answer: D,E,F
Explanation:
Reference:
https://web.stanford.edu/dept/itss/docs/oracle/10gR2/backup.102/b14191/rcmtunin003.htm
NEW QUESTION 170
choose one .Examine the RMAN commands: RMAN> CONNECT TARGET "sbu@prod AS SYSBACKUP"; RMAN> CONNECT AUXILIARY "sbu@dup_db AS SYSBACKUP"; RMAN> DUPLICATE TARGET DATABASE TO dup_db FROM ACTIVE DATABASE PASSWORD FILE SECTION SIZE 400M; Which statement is true about the DUPLICATE command?
- A. It succeeds only if the target database is in MOUNT state.
- B. It succeeds and creates multisection backup sets that are used for active database duplication.
- C. It fails because no parallel channels are allocated for the auxiliary database.
- D. It fails because there is no connection to a recovery catalog.
Answer: B
NEW QUESTION 171
Your container database, CDB1, has an application container, HR_ROOT, with an application PDB, HR_PDB1. You have the required privilege to clone HR_PDB1 to container database CDB2, which does not contain HR_ROOT. Which two are always true? (Choose two.)
- A. Cloning HR_ROOT automatically clones HR_PDB1.
- B. A common user must exist in CDB2 with the CREATE PLUGGABLE DATABASE privilege.
- C. The HR_PDB1clone created in CDB2 will be in mount state when cloning ends.
- D. All transactions in HR_PDB1 of CDB1 must commit before the cloning process starts.
- E. CDB1 and CDB2 must be in shared undo mode.
Answer: A,C
NEW QUESTION 172
A container database (CDB) contains two pluggable databases PDB1 and PDB2.
The LOCAL_UNDO_ENABLED database property is set to FALSE in the CDB. Data file 24 of PDB2 was deleted and you need to restore and recover it.
The only RMAN backup that exists was created with the BACKUP DATABASE command 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 restored only while connected to PDB2.
- C. Data file 24 can be recovered while connected to CDB$ROOT.
- D. Data file 24 can be recovered only while connected to PDB2.
- E. Data file 24 can be restored only while connected to CDB$ROOT.
- F. Data file 24 can be recovered while connected to PDB2.
Answer: A,C,E
NEW QUESTION 173
Choose two. For which two tasks can you use the DBMS_PDB.DESCRIBE procedure?
- A. to generate an XML metadata file that describes a non-CDB Oracle 12c database so that it can be plugged in as a PDB
- B. to generate an XML metadata file that describes the current plugged-in PDB
- C. to generate a . pdb archive file for any PDB in the current CDB
- D. to determine whether an XML file describes a PDB that can be plugged into the CDB in which you run the procedure
- E. to generate an XML metadata file from any unplugged PDB
Answer: A,B
NEW QUESTION 174
Which three are true about RMAN persistent configuration settings, administration, and their effects? (Choose three.)
- A. A target database's persistent RMAN configuration settings are always stored in the target's control file
- B. The V$RMAN_CONFIGURATION view displays only settings with values that have been modified.
- C. A DBA must specify either a redundancy retention policy or a recovery window retention policy.
- D. A target database's persistent RMAN configuration settings are always synchronized automatically with the RMAN catalog.
- E. The RMAN SHOW ALL command displays only settings with nondefault values.
- F. Backup older than the recovery window retention policy are always deleted automatically if the backup location has insufficient space.
- G. Backups written to the fast recovery area (FRA) that are oboslete based on the redundancy retention policy can be deleted automatically to free space.
Answer: A,B,F
Explanation:
Reference:
https://books.google.com.pk/books? id=pUEkAAAAQBAJ&pg=PA114&lpg=PA114&dq=V$RMAN_CONFIGURATION+view+displays+only+settings
+with+values+that+have+been+modified&source=bl&ots=fhC9A7ULeX&sig=ACfU3U2- cGhTjmAOpCZhvlL5R4j6ixLRAw&hl=en&sa=X&ved=2ahUKEwjJzf- WmtnoAhXT8eAKHQ9uBG8Q6AEwAHoECAwQJg#v=onepage&q=V%24RMAN_CONFIGURATION%20view
%20displays%20only%20settings%20with%20values%20that%20have%20been%20modified&f=false
NEW QUESTION 175
A container database (CDB) contains two pluggable databases PDB1 and PDB2. The LOCAL_UNDO_ENABLED database property is set to FALSE in the CDB. Data file 24 of PDB2 was deleted and you need to restore and recover it. The only RMAN backup that exists was created with the BACKUP DATABASE command 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 restored only while connected to PDB2.
- D. Data file 24 can be recovered while connected to CDB$ROOT.
- E. Data file 24 can be restored only while connected to CDB$ROOT.
- F. Data file 24 can be recovered only while connected to PDB2.
Answer: A,B,D
NEW QUESTION 176
Which two are true about poorly performing SQL statements and their tuning in Oracle database instances?
(Choose two.)
- A. SQL statements performing many physical I/Os can always have their performance improved by creating indexes.
- B. SQL statements doing joins always do more physical I/O than single table queries.
- C. Poorly performing SQL statements can be tuned automatically by the Oracle server.
- D. SQL statements doing only logical reads never require tuning because they do no physical I/O.
- E. The solution that best optimizes one SQL statement can degrade the performance of others.
Answer: C,D
NEW QUESTION 177
Which three are true about requirements for various FLASHBACK operations? (Choose three.)
- A. FLASHBACK drop requires undo to retrieve all versions of a row that existed between two points in time.
- B. FLASHBACK version query requires that the RECYCLEBIN parameter be set to ON.
- C. FLASHBACK version query requires undo to retrieve all versions of a row that existed between two points in time.
- D. FLASHBACK transaction query requires undo to retrieve all versions of a row that existed between two points in time.
- E. FLASHBACK drop requires that the RECYCLEBIN parameter be set to ON.
- F. FLASHBACK DATA ARCHIVE requires undo to store all versions of all rows of a table being tracked.
Answer: B,D,E
NEW QUESTION 178
On the 10th of August, you implement an incremental database backup strategy and configure a recovery window of five days.
Level 0 backups are taken on the 10th, 17th, and 24th of August.
Differential level 1 incremental backups are taken daily between the level 0 backups.
Today is the 26th of August.
Which backups will be obsolete?
- A. all backups prior to 17th of August
- B. all backups prior to 10th of August
- C. all backups prior to 24th of August
- D. all backups prior to 20th of August
- E. all backups prior to 22nd of August
Answer: C
NEW QUESTION 179
choose two Which two statements are true about encrypted backups performed by using RMAN?
- A. Transparent encryption of backups uses an encryption wallet.
- B. A password encryption of backups uses the password while creating and restoring backups.
- C. Image copy backups can be created by using password encryption.
- D. A database uses the same encryption key for every encrypted backup.
- E. Encrypted backups can only be written to disk.
Answer: A,B
NEW QUESTION 180
Which three are true about an application seed pluggable database (PDB)? (Choose three.)
- A. It cannot be dropped from its application container.
- B. It is automatically synchronized with its application root PDB when an application is installed.
- C. A new application PDB created by cloning an application seed PDB can have an up-to-date version of the application installed after cloning completes.
- D. It is not required in an application container.
- E. A new application PDB created by cloning an application seed PDB can have an old version of the application installed after cloning completes.
- F. It is automatically synchronized with its application root PDB when an application is upgraded. B)It cannot be added to an application container after the application container has already been created.
Answer: B,D
NEW QUESTION 181
Which two are true about creating RMAN backups for an Oracle container database? (Choose two.)
- A. The BACKUP TABLESPACE command can back up a PDB tablespace even if RMAN is connected to CDB$ROOT.
- B. Archived Redo Log backups can be created while connected to an application root CDB.
- C. Online Redo Log backups can be created while connected to the root container.
- D. Control file backups can be created while connected to the root container.
- E. Control file backups can be created while connected to a nonroot container.
Answer: B,E
NEW QUESTION 182
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 back to the previous Oracle home as part of a rollback operation
- B. to switch the Oracle Database home when using a centralized Rapid Home Provisioning server
- 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 to a read-only Oracle home
Answer: B,E
NEW QUESTION 183
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