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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 pdf:
- Using Availability Enhancements
- Upgrading to Oracle Grid Infrastructure
- Monitoring and Tuning Database Performance
- Using General Overall Database Enhancements
- Install Grid Infrastructure for a Standalone server
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Preparation Guide for Oracle Database Administration II Exam Number: 1Z0-083
Introduction for Oracle Database Administration II Exam Number: 1Z0-083
Oracle Database Administration II Exam Number: 1Z0-083 exam helps candidates gain the skills and knowledge to install, patch and upgrade Oracle Database and Oracle Grid Infrastructure for a standalone server, create and manage a backup and recovery strategy using Recovery Manager (RMAN), use RMAN for Database duplication and transportation, diagnose failures using RMAN, and manage all aspects of Multitenant container databases, pluggable databases and application containers including creation, cloning, security, transportation and backup and recovery.
An Oracle Database Administration 2019 Certified Professional has proven theoretical understanding of and the practical skills required to configure and manage Oracle Databases up to and including Oracle 19c. Passing this 2nd exam in a 2 exam path proves your skills in: installation, upgrades, patching, SQL programming skills, database and network administration and backup and recovery. This person also demonstrates fluency with some advanced skills such as multi-tenant, SQL performance monitoring and problem determination.
With this exam, candidates will learn:
- Creating and managing a backup and recovery strategy using Recovery Manager (RMAN)
- Managing all aspects of Multitenant container databases, pluggable databases and application containers including the creation
- Oracle Grid Infrastructure for a standalone server
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NEW QUESTION 28
Examine this configuration:
1. CDB1is a container database.
2. PDB1 and PDB2are pluggable databases in CDB1.
3. PDB1 and PDB2are OPENin READ WRITEmode.
You execute these commands successfully:
Which two are true? (Choose two.)
- A. PDB1is closed.
- B. Uncommitted transactions in PDB1have been rolled back.
- C. Uncommitted transactions in CDB1and PDB1have been rolled back.
- D. CDB1is shut down.
- E. CDB1is in MOUNT state
Answer: A,E
NEW QUESTION 29
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 all copies of the control file
- B. after losing an archived log from before the most recent backup
- C. when any archived log from, before, or after the most recent backup is corrupt
- D. after losing an archived log from after the most recent backup
- E. after losing the system tablespace
Answer: A,B
NEW QUESTION 30
Which three are true? (Choose three.)
- A. Virtual Private Database (VPD) policies on objects in an application root are automatically synchronized with all application PDBs contained in the application container.
- B. Application-common OLS policies can be created in an application root inside an install/patch BEGIN-END block.
- C. Application-common Oracle Label Security (OLS) policies cannot be created in an application root outside an install/patch BEGIN-END block.
- D. Application-common TSDP policies are always container specific.
- E. Application-common Transparent Security Data Protection (TSDP) policies can be created only within an application install/patch BEGIN-END block.
- F. Fine-grained auditing (FGA) policies in an application root are automatically synchronized to all application PDBs contained in the application container.
- G. Unified auditing can be automatically synchronized to all application PDBs in an application container.
Answer: C,D,G
NEW QUESTION 31
Which three can be done using Oracle Database Configuration Assistant (DBCA) starting from Oracle Database 19c?
- A. relocating a remote container database in silent mode
- B. cloning a remote container database in interactive mode
- C. relocating a remote pluggable database in interactive mode
- D. cloning a remote container database in silent mode
- E. relocating a remote container database in interactive mode
- F. cloning a remote pluggable database in silent mode
- G. relocating a remote pluggable database in silent mode
Answer: A,E,G
NEW QUESTION 32
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. Automatic Memory Management must be used together with locking the System Global Area into physical memory.
- C. With Automatic Memory Management, the database instance can increase the System Global Area size by reducing the Program Global Area size.
- D. On Line Transaction Processing systems often use less Program Global Area than Decision Support Systems.
- E. With Automatic Shared Memory Management, the database instance can increase the Large Pool size by reducing the Shared Pool 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: D,E,F
Explanation:
Explanation/Reference: https://docs.oracle.com/database/121/TGDBA/tune_shared_pool.htm
NEW QUESTION 33
Which three methods can be used for heap table data migration after upgrading a database? (Choose three.)
- A. using Oracle Data Pump
- B. using Database Replay
- C. using Database Upgrade Assistant
- D. using operating system file copy utilities
- E. using the CREATE TABLE AS SELECT SQL statement
- F. using SQL Developer
Answer: A,E,F
Explanation:
Explanation
https://www.oracle.com/a/tech/docs/twp-upgrade-oracle-database-19c.pdf
NEW QUESTION 34
Which two are true about the execution of operating system scripts starting from Oracle Database 19c?
(Choose two.)
- A. root.shcan be executed automatically by the Database Installer only if it is provided with root credentials.
- B. root.shcan be executed automatically by the Database installer only by using sudocredentials.
- C. The sudopassword can be specified in a response file.
- D. The rootpassword cannot be specified in a response file.
- E. orainstRoot.shcan be executed automatically by the Database installer by using sudoor root credentials.
- F. The sudopassword must be specified in a response file.
Answer: D,E
Explanation:
Explanation
NEW QUESTION 35
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 that the recyclebin parameter be set to on.
- D. flashback version query requires that the recyclebin parameter be set to on.
- E. flashback drop requires undo to retrieve all versions of a row that existed between two points in time.
- F. flashback transaction query requires undo to retrieve all versions of a row that existed between two points in time.
Answer: A,D,F
NEW QUESTION 36
Which two are true about RMAN duplexed backup sets? (Choose two.)
- A. They can be created only by using the COPIES option of a BACKUP command.
- B. They must be written to media.
- C. They can be written only to disk.
- D. They can be written to media.
- E. They can be created by using the RMAN CONFIGURE command to specify duplexing before taking a backup.
Answer: A,D
NEW QUESTION 37
Which two are true about diagnosing Oracle Database failure situations using Data Recovery Advisor?
- A. Data Recovery Advisor can be used if a database is closed.
- B. Using the Data Recovery Advisor list failure command always requires that the database for which failures are to be listed is in mount state.
- C. A failure can be closed only when it has been repaired.
- D. Data Recovery Advisor can proactively check for failures.
- E. The Data Recovery Advisor change failure command can be used only to change failure priorities.
Answer: A,C
NEW QUESTION 38
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 before the most recent backup
- B. after losing an archived log from after the most recent backup
- C. after losing the SYSTEMtablespace
- D. when any archived log from, before, or after the most recent backup is corrupt.
- E. after losing all copies of the control file
Answer: A,D
NEW QUESTION 39
Which two are true about Recovery Manager (RMAN) diagnostic message output? (Choose two.)
- A. RMAN error stacks should be read from the top down as that is the order in which errors are generated.
- B. Media Management messages for SBT devices are always written to sbtio.log.
- C. Media Management messages for SBT devices are written to an Oracle trace file.
- D. RMAN error stacks should be read from the bottom up as that is the order in which errors are generated.
- E. The RMAN LOG command line clause causes output issued during RMAN command compilation to be written to a log file and to standard output.
- F. The RMAN LOG command line clause causes output issued during RMAN command compilation to be written to a log file only.
Answer: C,F
NEW QUESTION 40
Which three are true about Oracle Grid Infrastructure for a Standalone Server?
- A. It requires the operating system oracle_base environment variable to be predefined before installation.
- B. Automatic Storage Management (ASM) requires that O/S groups OSASM and OSDBA be assigned as secondary groups for its installation owner.
- C. It requires Oracle ASMLibto manage Automatic Storage Management (ASM) disks.
- D. It includes both Oracle Restart and Oracle Automatic Storage Management (ASM) software.
- E. It requires Oracle ASM Filter Driver (ASMFD) to manage Automatic Storage Management (ASM) disks
- F. It creates one disk group during installation.
Answer: D,E,F
NEW QUESTION 41
Which two are true about RMAN duplexed backup sets? (Choose two.)
- A. A non-duplexed backup set written to SBT can be duplexed to tape by backing up the backup set that is already on tape.
- B. A duplexed backup set uses the same number of SBT channels as a non-duplexed backup set for the same number of files.
- 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 always uses twice as many SBT channels as a non-duplexed backup set for the same number of files.
Answer: D,E
NEW QUESTION 42
Which three are true about a whole database backup? (Choose three.)
- A. It can consist of either backup sets or image copies.
- B. It can be created only by using RMAN.
- C. It can be consistent.
- D. It can be inconsistent.
- E. It always includes all data files, the current control file, the server parameter file, and archived redo logs.
- F. It is the only possible backup type for a database in NOARCHIVELOG mode.
Answer: A,C,E
NEW QUESTION 43
Which two are true about duplicating pluggable databases (PDBs) with RMAN?
- A. A user with sysdba or sysbkup must be logged in with RMAN to the PDB to duplicate it.
- B. Two or more PDBs can be duplicated with the same rmak duplicate command.
- C. All tablespaces belonging to a PDB must be duplicated when duplicating the PDB.
- D. The auxiliary Instance is automatically created with enable_pluggable_database = true.
- E. cdb$root and pdbSseed are automatically duplicated.
Answer: B,C
NEW QUESTION 44
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. Poorly performing SQL statements can be tuned automatically by the Oracle server.
- C. SQL statements doing only logical reads never require tuning because they do no physical I/O.
- D. The solution that best optimizes one SQL statement can degrade the performance of others.
- E. SQL statements doing joins always do more physical I/O than single table queries.
Answer: B,C
NEW QUESTION 45
Which two are true about the Oracle dataabse methodology? (Choose two.)
- A. SQL statements should always be tuned before tuning any file systems.
- B. The Oracle Database time model should be used to find the database and instance areas most in need of tuning.
- C. The alert log should be used to find the database and instance areas most in need of tuning.
- D. Tuning activities should stop once agreed service levels for performance have been met.
- E. Tuning activities should stop once the user is satisfied with performance.
- F. The database instance memory should always be tuned before tuning any file systems.
Answer: C,D
NEW QUESTION 46
Which three are true about the SQL Tuning Advisor? (Choose three.)
- A. It builds SQL profiles for each poorly performing SQL statement to prevent regressions.
- B. It checks each query being analyzed for missing statistics.
- C. It considers all SQL statements being analyzed by the advisor task as a group.
- D. It checks each query being analyzed for stale statistics.
- E. It only recommends syntactic changes to SQL statements.
- F. It can recommend semantic changes to SQL statements.
Answer: A,B,D
Explanation:
Reference:
https://docs.oracle.com/database/121/TGSQL/tgsql_sqltune.htm#TGSQL540
NEW QUESTION 47
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. Automatic Memory Management must be used together with locking the System Global Area into physical memory.
- C. With Automatic Memory Management, the database instance can increase the System Global Area size by reducing the Program Global Area size.
- D. On Line Transaction Processing systems often use less Program Global Area than Decision Support Systems.
- E. With Automatic Shared Memory Management, the database instance can increase the Large Pool size by reducing the Shared Pool 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: D,E,F
NEW QUESTION 48
Which two are true about monitoring waits for sessions and services?
- A. v$session_wait_class displays waits broken down by wait class only for waiting sessions.
- B. v$session_wait and v$session both contain details of the event on which a waiting session is currently waiting.
- C. v$session_event displays all waits for all past and existing sessions if the wait has occurred at least once for a session.
- D. v$service_event displays wait counts for every wait event whether waited on or not, for each service.
- E. v$session_wait and v$session both contain details of the event on which a non-waiting session last waited.
Answer: C,D
NEW QUESTION 49
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