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Get all the Information About Oracle 1Z0-083 Exam 2024 Practice Test Questions

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Oracle 1Z1-083 certification exam is a challenging exam that requires a deep understanding of database concepts, database security, backup and recovery, performance tuning, and troubleshooting. 1Z0-083 exam is designed to test the candidate’s ability to work with large databases and to manage complex database environments. 1Z0-083 exam is also designed to test the candidate’s ability to implement Oracle’s latest features, such as multitenant architecture, in-memory column store, and database sharding.


Oracle 1Z0-083 (Oracle Database Administration II) Certification Exam is a professional-level certification offered by Oracle Corporation. 1Z0-083 exam is designed for individuals who are interested in becoming certified database administrators. 1Z0-083 exam focuses on advanced database administration topics such as managing database security, backup and recovery, performance tuning, and database upgrades. Passing 1Z0-083 exam is a testament to an individual's expertise in Oracle database administration.

 

NEW QUESTION # 62
Examine this configuration:
23.CDB1and CDB2are two container databases.
24.PDB1is a pluggable database in CDB1.
25.PDB1_C1_SRVis a service for PDB1.
26.CDB1_LINKis a database link in CDB2referring to PDB1.
27.CDB2is also an entry in tnsnames.orapointing to the CDB2database default service.
You execute these commands successfully:
$ sqlplus sys/oracle_4U@cdb2 as sysdba
SQL> CREATE PLUGGABLE DATABASE PDB1
FROM PDB1@CDB1_LINK
SERVICE_NAME_CONVERT=('PDB1_C1_SRV','PDB1_C2_SRV');
Which two are true? (Choose two.)

  • A. PDB1 will be created in CDB2 and automatically opened.
  • B. PDB1 will be created in CDB2 and left in MOUNT state.
  • C. PDB1_C1_SRV in CDB1 will be renamed PDB1_C2_SRV.
  • D. PDB1_C2_SRV will be created and started automatically.
  • E. PDB1_C2_SRV will be created but not started.

Answer: B,E

Explanation:
After you create the PDB, it is in mounted mode, and its status is NEW.


NEW QUESTION # 63
Which three are located by using environment variables? (Choose three.)

  • A. the Optimal Flexible Architecture (OFA) compliant path to store Oracle software and configuration files.
  • B. the list of a disk group names to be mounted by an Oracle Automatic Storage Management (ASM) instance at startup
  • C. the temporary disk space used by Oracle Installer during installation
  • D. the maximum number of database files that can be opened by a database instance
  • E. the location of Oracle Net Services configuration files
  • F. default directories for temporary files used by temporary tablespaces

Answer: A,C,E


NEW QUESTION # 64
Which three are true about opatchauto? (Choose three.)

  • A. It performs a shutdown and then a restart of all processes in both Oracle Grid Infrastructure and Oracle Database home during the patching process.
  • B. It must be invoked by a user with root user privileges.
  • C. It applies patches in nonrolling mode by default.
  • D. Patches are applied via opatchauto.
  • E. It requires the Oracle Grid Infrastructure and Oracle Database instances to be shut down before being invoked.
  • F. It is used to apply interim patches to Oracle Grid Infrastructure and Oracle Database home combinations.
  • G. Users must always input patch plans to opatchauto.

Answer: A,B,F

Explanation:
A). It performs a shutdown and then a restart of all processes in both Oracle Grid Infrastructure and Oracle Database home during the patching process. => True
B). It must be invoked by a user with root user privileges. => true
C). Patches are applied via opatchauto. => not always.
D). Users must always input patch plans to opatchauto. => false, patch plans is optional
E). It requires the Oracle Grid Infrastructure and Oracle Database instances to be shut down before being invoked. => false
F). It applies patches in nonrolling mode by default. => false, default is rolling mode.
G). It is used to apply interim patches to Oracle Grid Infrastructure and Oracle Database home combinations. => true Reference:
https://docs.oracle.com/cd/E24628_01/doc.121/e39376/opatchauto_commands.htm#OPTCH585
https://docs.oracle.com/cd/E24628_01/doc.121/e39376/configuration_patching.htm#OPTCH149


NEW QUESTION # 65
Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)

  • A. A direct upgrade can be performed only from the immediately preceding Oracle Grid Infrastructure version.
  • B. Only the grid user 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. The upgrade process will automatically install all mandatory patches for the current version of Oracle Grid Infrastructure.
  • F. Existing Oracle Database instances must be shut down before starting the upgrade.

Answer: B,E,F


NEW QUESTION # 66
Which three are true about Database Point-in-Time Recovery?

  • A. The database must be in mount state when performing Database Point-in-Time Recovery.
  • B. The database must be in archivelog mode.
  • C. The database must be open resetlogs after Database Point-in-Time Recovery.
  • D. Database Point-in-Time Recovery is performed by the Managed Recovery Process (MRP)
  • E. The target point for the recovery must be specified as a time or System Change Number (SCN).
  • F. The database must have flashback database on to perform Database Point-in-Time Recovery.

Answer: A,E,F


NEW QUESTION # 67
Which three are true about opatchauto?

  • A. It applies patches in nonrolling mode by default.
  • B. It requires the Oracle Grid Infrastructure and Oracle Database instances to be shut down before being invoked.
  • C. It performs a shutdown and then a restart of all processes in both Oracle Grid Infrastructure and Oracle Database home during the patching process.
  • D. It must be invoked by a user with root user privileges.
  • E. It Is used to apply interim patches to Oracle Grid Infrastructure and Oracle Database home combinations.
  • F. Patchsets are applied via opatchauto.
  • G. Users must always input patch plans to opatchauto.

Answer: A,B,F


NEW QUESTION # 68
Which three are true about Automatic Workload Repository (AWR), Automatic Database Diagnostic Monitor (ADDM), and the Manageability Monitor (MMON) background process? (Choose three.)

  • A. ADDM can recommend extending the buffer cache.
  • B. By default, MMON creates an AWR snapshot every 30 minutes.
  • C. AWR snapshots must be deleted when no longer required by ADDM.
  • D. ADDM can recommend shrinking the buffer cache.
  • E. ADDM performs its analysis only when a DBA requests it.
  • F. By default, AWR snapshots are automatically purged after eight days.

Answer: C,D,F

Explanation:
Explanation/Reference: https://books.google.com.pk/books?id=DeQkU5E75DUC&pg=PA869&lpg=PA869&dq=By+default,
+AWR+snapshots+are+automatically+purged+after+eight
+days&source=bl&ots=DfoGmJfCMy&sig=ACfU3U0Pf2RgIs72LUV4HUzs5UIXI8sXEQ&hl=en&sa=X&ved=2ah UKEwjb8bKhu9noAhUwTxUIHRpYAuMQ6AEwA3oECAsQLA#v=onepage&q=By%20default%2C%20AWR%
20snapshots%20are%20automatically%20purged%20after%20eight%20days&f=false


NEW QUESTION # 69
Choose two. Which two are true about a Recovery Manager (RMAN) duplication without a TARGET connection?

  • A. RMAN disk-based backups of the database to be duplicated can be used by the auxiliary instance.
  • B. The UNDO TABLESPACE clause is always required when no connection exists to the TARGET instance.
  • C. RMAN "pushes" the backups of the database to be duplicated over the network to the auxiliary instance.
  • D. The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is closed.
  • E. The UNDO TABLESPACE clause is never required.

Answer: A,D


NEW QUESTION # 70
Which two are true about the Oracle dataabse methodology? (Choose two.)

  • A. The database instance memory 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. Tuning activities should stop once the user is satisfied with performance.
  • D. SQL statements should always be tuned before tuning any file systems.
  • E. Tuning activities should stop once agreed service levels for performance have been met.
  • F. The alert log should be used to find the database and instance areas most in need of tuning.

Answer: E,F


NEW QUESTION # 71
Choose the best answer. Examine this configuration: 1. CDB1 is a container database. 2. DEFAULT_SHARING is METADATA. 3. APP_ROOT is an application root contained in CDB1. 4. APP_PDB1 is an application PDB contained in APP_ROOT. 5. COMPANYAPP is an application contained in APP_ROOT. 6. EMP is a common table created in APP_ROOT and all its application PDBs, created when version 1.0 of COMPANYAPP was installed. You execute these commands: $ sqlplus sys/ orac1e@localhost:1521/cdb1 as sysdba SQL> ALTER SYSTEM SET DEFAULT_SHARING=DATA; System altered. SQL> ALTER SESSION SET CONTAINER=app_root; Session altered. SQL> ALTER PLUGGABLE DATABASE APPLICATION companyapp BEGIN UPGRADE '1.0' TO '2.0'; pluggable database altered. SQL> ALTER TABLE emp ADD (sal NUMBER NOT NULL) ; Table altered. SQL> ALTER PLUGGABLE DATABASE APPLICATION companyapp END UPGRADE TO '2.0'; Pluggable database altered. SQL> ALTER SESSION SET CONTAINER=app_pdb1; Session altered. SQL> DESC emp; Name Null? Type --------------------------------------------------------------ENO NUMBER ENAME VARCHAR2 (20) SQL> SELECT * FROM emp; ENO ENAME ---------------------------------100 Alan 200 Ben SQL> ALTER PLUGGABLE DATABASE APPLICATION companyapp SYNC; What will be the outcome and why?

  • A. It will return an error because the SYNC operation is not allowed when constraints are added to common objects.
  • B. SAL will be added to APP_PDB1.EMP, with 0 in columns of existing rows.
  • C. It will return an error because EMP is not empty in APP_ROOT.
  • D. It will return an error because EMP.SAL is empty in APP_ROOT.
  • E. SAL will be added to APP_PDB1.EMP, with NULLs in columns of existing rows.

Answer: C


NEW QUESTION # 72
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 10th of August
  • B. all backups prior to 24th of August
  • C. all backups prior to 20th of August
  • D. all backups prior to 22nd of August
  • E. all backups prior to 17th of August

Answer: B


NEW QUESTION # 73
Which three statements are true about Flashback Database?

  • A. Flashback logs are written sequentially, and are archived.
  • B. Flashback Database uses a restored control file to recover a database.
  • C. The Oracle database automatically creates, deletes, and resides flashback logs in the Fast Recovery Area.
  • D. Flashback Database can recover a data file that was dropped during the span of time of the flashback.
  • E. Flashback logs are used to restore to the blocks' before images, and then the redo data may be used to roll forward to the desired flashback time.
  • F. Flashback Database can recover a database to the state that it was in before a reset logs operation.

Answer: A,C,E


NEW QUESTION # 74
Which three true about recovering tables using RMAN? (Choose three.)

  • A. RMAN can recover tables in the SYSAUX tablespace.
  • B. RMAN can recover tables in a standby database.
  • C. RMAN can recover tables owed by the SYSTEM user.
  • D. RMAN can recover a table after a DDL operation has altered the table structure.
  • E. RMAN can recover tables in the SYSTEM tablespace.
  • F. RMAN can recover tables owned by the SYS user.
  • G. RMAN always uses an auxiliary instance.

Answer: A,E,G


NEW QUESTION # 75
Choose three. Which three are true about RMAN archival backups with the RESTORE POINT clause?

  • A. The SPFILE is included in the archival backup.
  • B. Use of a recovery catalog is always required to support the creation and use of archival backups. G)The ARCHIVAL attribute for a backup overrides the RMAN retention policy.
  • C. Archive logs are retained if they are necessary to allow the database to be recovered to a consistent state when an archival backup is restored.
  • D. They can optionally be written to a fast recovery area (FRA).
  • E. All archive logs are retained after an archival backup is taken, until the next archival backup is taken of the same database.
  • F. They are never considered obsolete by RMAN.

Answer: A,C


NEW QUESTION # 76
Choose three. Which three are true about creating container databases (CDBs) and pluggable databases (PDBs) in Oracle 19c and later releases?

  • A. A snapshot copy PDB can be a full copy of a source PDB.
  • B. A CDB can be duplicated using the Database Configuration Assistant (DBCA) in silent mode with no configuration required before starting the duplication.
  • C. A CDB can be duplicated using Recovery Manager (RMAN) with no configuration required before starting the duplication.
  • D. A PDB snapshot can be a sparse copy of a source PDB.
  • E. A PDB snapshot can be a full copy of a source PDB.
  • F. A PDB snapshot depends on an existing storage snapshot of the source PDB.
  • G. A snapshot copy PDB does not depend on an existing storage snapshot of the source PDB.

Answer: A,C,F


NEW QUESTION # 77
Automatic Shared Memory Management is disabled for one of your database instances.
SomeSQL statements perform poorly due to excessive hard parse activity, thereby degrading performance.
What would be your next step?

  • A. Run the Memory Advisor for the System Global Area.
  • B. Run the Memory Advisor for the shared pool.
  • C. Run theMemory Advisor for the Program Global Area.
  • D. Run the SQL Tunning Advisor.
  • E. Run the SQL Access Advisor.

Answer: B


NEW QUESTION # 78
Oracle Managed Files (OMF) is enabled in a CDB and this command is successfully executed:

Which three are true?

  • A. An application root PDB is created for APP1.
  • B. A default service Is created for the application root APP1.
  • C. APP1 can never be unplugged.
  • D. Application PDBs that are subsequently created in the APP1 application container will be cloned from APP1$SEED.
  • E. An application seed PDB Is created for APP1.
  • F. Application PDBs that are subsequently created in the APP1 application container will be cloned from PDB$SEED.

Answer: A,B,D


NEW QUESTION # 79
Which two are true about diagnosing Oracle Database failure situations using Data Recovery Advisor? (Choose two.)

  • A. A failure can be closed only when it has been repaired.
  • 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. Data Recovery Advisor can proactively check for failures.
  • D. Data Recovery Advisor can be used if a database is closed.
  • E. The Data Recovery Advisor CHANGE FAILURE command can be used only to change failure priorities.

Answer: C,D

Explanation:
A is NOT correct - DB can be even NOT MOUNTED.
B is NOT correct - you can close it whenever you want, eventually new check will find the failure again.
C has to be CORRECT despite it is not fully clear, anyway Recovery Advisor can be used when database is even NOT mounted, hence it is CLOSED while instance is STARTED.
D is NOT correct because of ONLY word. Change Failure can CLOSE or CHANGE PRIORITY.
E is CORRECT - Data Recovery Advisor can potentially detect, analyze, and repair data failures BEFORE a database process discovers the corruption and signals an error. Early warnings help limit damage caused by corruption.
The health assessment is known as a data integrity check and can be invoked reactively or PROACTIVELY.


NEW QUESTION # 80
Which three are located by using environment variables? (Choose three.)

  • A. default directories for temporary files used by temporary tablespaces
  • B. the list of a disk group names to be mounted by an Oracle Automatic Storage Management (ASM) instance at startup
  • C. the Optimal Flexible Architecture (OFA) compliant path to store Oracle software and configuration files.
  • D. the temporary disk space used by Oracle Installer during installation
  • E. the maximum number of database files that can be opened by a database instance
  • F. the location of Oracle Net Services configuration files

Answer: A,E,F


NEW QUESTION # 81
Choose two. You plan to perform cross-platform PDB transport using XTTS. Which two are true?

  • A. The source PDB must be in MOUNT state.
  • B. The source PDB can be in MOUNT or OPEN state.
  • C. The source and target platforms must have the same endianess.
  • D. A backup of the PDB must exist, taken using the BACKUP command with the To PLATFORM clause.
  • E. The source PDB must not be an application root.
  • F. Automatic conversion of endianess occurs.

Answer: B,C


NEW QUESTION # 82
Which three capabilities require the use of the RMAN recovery catalog? (Choose three.)

  • A. using the KEEP FOREVER clause with the BACKUP command
  • B. using RMAN stored scripts
  • C. creating customized reports about a single database's backups
  • D. creating encrypted backups
  • E. using the REPORT SCHEMA command to list a database's data files and tablespaces at times in the past
  • F. using the REPORT SCHEMA command to list a database's current data files and tablespaces

Answer: A,B,F


NEW QUESTION # 83
Examine these queries and their output:

After a system crash, an instance restart and an attempted opening of the PDBs result in:

Which two are true? (Choose two.)

  • A. Data file 24 must be recovered while PDB2 is closed.
  • B. Data file 24 can be recovered while CDB$ROOT and PDB$SEED are opened.
  • C. Data file 24 can be recovered while PDB2 is opened.
  • D. Data file 24 cannot be recovered while the CDB is opened.
  • E. Data file 24 must be recovered while the CDB is opened.

Answer: C,E

Explanation:
Explanation
19c: PDB SYSTEM or UNDO Tablespace Recovery: The CDB and all other PDBs can be left opened. 1.
Connect to PDB 2. Shutdown abort the PDB, if its not automatically done. sqlplus sys@sales_pdb as sysdba sql> SHUTDOWN ABORT; OR ALTER PLUGGABLE DATABASE CLOSE ABORT; rman target sys@slaes_pdb rman> restore database; rman> recover database; rman> alter pluggable database sales_pdb open;


NEW QUESTION # 84
......

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