[Oct 26, 2023] Get Up-To-Date Real Exam Questions for 1Z0-083 with New Materials [Q49-Q70]

[Oct 26, 2023] Get Up-To-Date Real Exam Questions for 1Z0-083 with New Materials

Updated 1Z0-083 Certification Exam Sample Questions

To take the Oracle 1Z0-083 exam, candidates must have a solid understanding of database administration concepts and experience working with Oracle databases. 1Z0-083 exam is intended for database administrators, system administrators, and IT professionals who are responsible for managing and maintaining Oracle databases in their organization.

 

NEW QUESTION # 49
Choose three. Which three are true about using Database Upgrade Assistant (DBUA) to upgrade a database?

• A. Multiple databases with the same ORACLE_HOME can be upgraded simultaneously.
• B. A whole database backup must exist before upgrade.
• C. DBUA must be launched from the target Oracle Home.
• D. The Pre-Upgrade Information Tool script is executed by DBUA.
• E. The database must be opened in read-only mode.
• F. All pluggable databases are automatically upgraded as part of a container database upgrade.

Answer: B,D,F

NEW QUESTION # 50
Which two are true about Oracle Optimizer Statistics, their use, and their collection? (Choose two.)

• A. The Statistics Advisor can help recommend the best way to gather statistics.
• B. The Statistics Advisor generates actions for all recommendations.
• C. The number of table rows is considered when evaluating the cost of accessing a table using an index.
• D. Statistics collected using DBMS_STATS always yield the best optimizer result.
• E. Index balanced B*Tree height is considered when evaluating the cost of using an index.

Answer: A,D

NEW QUESTION # 51
Which four are true about duplicating a database using Recovery Manager (RMAN)? (Choose four.)

• A. A subset of the target database can be duplicated.
• B. A connection to the recovery catalog instance is always required.
• C. A backup of the target database is always required.
• D. Duplication can be done by having the target database instance push copies to the auxiliary database instance.
• E. A new DBID is always created for the duplicated database.
• F. Duplication can be done by having the auxiliary database instance pull backup sets from the target database instance.
• G. A connection to the target database instance is always required.
• H. A connection to an auxiliary instance is always required.

Answer: A,D,F,H

NEW QUESTION # 52
Which four are true about a Recovery Manager (RMAN) duplication without a TARGET connection? (Choose four.)

• A. RMAN "pushes" the backups of the database to be duplicated over the network to the auxiliary instance.
• B. RMAN disk-based backups of the database to be duplicated can be used by the auxiliary instance.
• C. The NOREDO clause can be used if the backups of the database being duplicated were taken when the database was in ARCHIVELOG mode.
• D. The NOREDO clause must be used if the backups of the database being duplicated were taken when the database was in NOARCHIVELOG mode.
• E. RMAN SBT-based backups of the database to be duplicated can be used by the auxiliary instance.
• F. The UNDO TABLESPACE clause is always required when no connection exists to the TARGET instance.
• G. The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is closed.
• H. The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is opened.

Answer: B,C,D,E

NEW QUESTION # 53
Which three are true about thresholds, metrics, and server-generated alerts? (Choose three.)

• A. STATISTICS_LEVEL must be set to ALL to generate alerts.
• B. Metrics are statistical counts for a specific unit.
• C. A space usage management alert is automatically cleared after the underlying problem is resolved.
• D. Cleared stateful alerts are displayed by querying DBA_ALERT_HISTORY.
• E. All metrics are instance related.
• F. They are generated by SMON when a tablespace is 97% full.

Answer: B,C,D

Explanation:
Reference:
https://docs.oracle.com/cd/E11882_01/server.112/e41573/autostat.htm#PFGRF027 https://blogs.oracle.com/oem/how-to-clear-an-alert-v2

NEW QUESTION # 54
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 inserts on USER1.EMP remain uncommitted when the session connected to PDB2.
• C. The inserts on USER1.EMP were committed when the session connected to PDB2.
• D. The inserts on USER1.EMP were rolled back 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 insert on USER2.DEPT is uncommitted.
• G. The insert on USER2.DEPT fails because of the active transaction in the parent container.

Answer: C,F

NEW QUESTION # 55
Which three methods can be used for heap table data migration after upgrading a database?

• A. using SQL Developer
• B. using the create table AS select SQL statement
• C. using Database Replay
• D. using Oracle Data Pump
• E. using Database Upgrade Assistant
• F. using operating system file copy utilities

Answer: A,C,E

NEW QUESTION # 56
Which two are facets of performance planning that should always be considered or implemented for an Oracle Database environment? (Choose two.)

• A. the configuration of storage arrays
• B. the physical data model
• C. defining foreign keys for all tables to speed up joins
• D. defining primary keys for all tables to speed up all queries
• E. using check constraints to speed up updates

Answer: A,B

NEW QUESTION # 57
Which three are true about managing memory components in an Oracle database instance? (Choose three.)

• A. With Automatic Memory Management, the database instance can increase the System Global Area size by reducing the Program Global Area size.
• B. On Line Transaction Processing systems often use less Program Global Area than Decision Support Systems.
• C. With Automatic Shared Memory Management, the database instance can increase the Large Pool size by reducing the Shared Pool size.
• D. Automatically tuned and resized System Global Area components will always revert to their initial sizes after an instance restart.
• E. Automatic Memory Management must be used together with locking the System Global Area into physical memory.
• F. With Automatic Shared Memory Management, the database instance can increase the Program Global Area size by reducing the System Global Area size.

Answer: B,C,F

NEW QUESTION # 58
You issued this command:
RMAN> BACKUP RECOVERY FILES;
Which two are true?

• A. All non-Oracle files in the current FRA that have not been backed up already, are backed up.
• B. All Oracle recovery files not in the current FRA that have not been backed up already, are backed up.
• C. All Oracle recovery files in the current FRA that have not been backed up already, are backed up.
• D. All Oracle recovery files in the current fast recovery area (FRA) are backed up.
• E. These backups can be written to disk or SBT.

Answer: A,B

NEW QUESTION # 59
Which two are true about duplicating pluggable databases (PDBs) with RMAN?

• A. All tablespaces belonging to a PDB must be duplicated when duplicating the PDB.
• B. cdb$root and pdbSseed are automatically duplicated.
• C. Two or more PDBs can be duplicated with the same rmak duplicate command.
• D. The auxiliary Instance is automatically created with enable_pluggable_database = true.
• E. A user with sysdba or sysbkup must be logged in with RMAN to the PDB to duplicate it.

Answer: A,C

NEW QUESTION # 60
Which three are true about actions that can or cannot be performed by users with the SYSBACKUP privilege?
(Choose three.)

• A. They can view data from any user-defined tables.
• B. They cannot drop tablespaces.
• C. They can create any table.
• D. They cannot create restore points.
• E. They can drop any tablespace.
• F. They can view data from any data dictionary view or dynamic performance view.

Answer: B,C

NEW QUESTION # 61
Examine the command for creating pluggable database PDB2 in container database CDB2.

Select three options, any one of which is required for it to execute successfully. (Choose three.)

• A. Add the FILE_NAME_CONVERT clause to the statement and enable OracleManaged Files (OMF)
• B. Addonly the CREATE_FILE_DEST clause to the statement.
• C. Add the FILE_NAME_CONVERT clause to the statement and set the PDB_FILE_NAME_CONVERT parameter.
• D. Set the PDB_FILE_NAME_CONVERT parameter and enable OMF.
• E. Set only the PDB_FILE_NAME_CONVERT parameter.
• F. Enable only OMF.

Answer: B,D,F

NEW QUESTION # 62
How do you configure a CDB for local undo mode?

• A. 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.
• B. Open the CDB instance in restricted mode. In cdb$root, execute alter database local undo on. create an undo tablespace in each PDB, and then restart the CDB instance
• C. Open the CDB instance in upgrade mode. In cdb$root, execute alter database local undo on, and then restart the CDB instance.
• D. Open the CDB instance in restricted mode. In cdb$root, drop the undo tablespace. Execute alter database local undo on in each PDB, and then restart the CDB instance.
• E. Open the CDB in read-only mode. In cdb$root, execute alter database local undo on, and then change the CDB to read/write mode.

Answer: D

NEW QUESTION # 63
Choose three. In which three situations can you use threshold server-generated alerts to help diagnose and fix problems?

• A. when the total number of logons exceeds a specific value
• B. when a resumable statement is suspended
• C. when the total number of locked user account exceeds a specific value
• D. when the number of logons per second exceeds a specific value
• E. when free space in a locally managed tablespace falls below a specified percentage
• F. when free space in a dictionary managed tablespace falls below a specified percentage

Answer: C,D,E

NEW QUESTION # 64
For which two requirements can you use the USER_TABLESPACE clause with the CREATE PLUGGABLE DATABASE command? (Choose two.)

• A. to specify the list oftablespaces to include when creating a PDB from the CDB seed
• B. to specify the list of user tablespaces to include when moving a non-CDB to a PDB
• C. to exclude all tablespaces except SYSTEM, SYSAUX, and TEMPwhen plugging in a PDB
• D. to include specific user tablespaces only when relocating a PDB
• E. to specify a default tablespace in a PDB cloned from another PDB in the same CDB.
• F. to exclude a temp tablespace when plugging in a PDB

Answer: A,F

NEW QUESTION # 65
Choose three. Which three are true about interpreting Recovery Manager (RMAN) error stacks returned to standard output?

• A. If an RMAN command fails, the output will only identify the command that failed.
• B. Some messages in the error stack are not errors.
• C. Media Management errors appear as a line with "sbtio".
• D. Media Management errors appear as a line with "sbtio" and a number.
• E. If an RMAN command fails, the output will identify the channel ID where the failure occurred. D)Media Management errors appear as a line with "Additional information" and a number.

Answer: A,B,D

NEW QUESTION # 66
A container database called CDB1 is OMF-enabled.
PDB_FILE_NAME_CONVERT is not configured in CDB1. PDB1 was unplugged from CDB1 earlier in the week. Examine this command, which will be executed in CDB1:
CREATE PLUGGABLE DATABASE pdb1
USING '/u01/app/oracle/oradata/pdb1.xml'
SOURCE_FILE_NAME_CONVERT =
('/u01/app/oracle/oradata/', '/u02/app/oracle/oradata/');
Which two are true? (Choose two.)

• A. DBMS_PDB.CHECK_PLUG_COMPATIBILITY must be run in CDB1 before executing the command.
• B. PDB1 data files already exist in the correct location.
• C. PDB_FILE_NAME_CONVERT must be set before executing the command.
• D. PDB1 must be dropped from CDB1.
• E. /u01/app/oracle/oradata/pdb1.xml does not contain the current locations of data files for PDB1.

Answer: B,D

Explanation:
Reference:
http://anjaniappsdba.blogspot.com/2016/09/oracle-database-12102c-hot-cloning-of.html

NEW QUESTION # 67
Choose two. Examine this command: $ rhpctl move database -sourcehome Oracle_home_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 upgrade an Oracle Database on the centralized Rapid Home Provisioning server
• C. to move an Oracle Database to the centralized Rapid Home Provisioning server
• D. to switch to a patched Oracle Database home
• E. to switch to a read-only Oracle home

Answer: B,D

NEW QUESTION # 68
Choose two. Which two are true about Lockdown profiles in a container database (CDB) and its pluggable databases (PDBs)?

• A. A Lockdown profile created from a base Lockdown profile is never automatically modified if the profile on which it is based is modified.
• B. A Lockdown profile created from a base Lockdown profile is always automatically modified if the profile on which it is based is modified.
• C. A PDB Lockdown profile can be created in CDB$ROOT .
• D. A PDB Lockdown profile can be created in an application root.
• E. A PDB Lockdown profile can be created in a regular PDB.

Answer: C,D

NEW QUESTION # 69
Which three methods can be used for heap table data migration after upgrading a database? (Choose three.)

• A. using the CREATE TABLE AS SELECT SQL statement
• B. using SQL Developer
• C. using Database Upgrade Assistant
• D. using Database Replay
• E. using operating system file copy utilities
• F. using Oracle Data Pump

Answer: A,B,F

Explanation:
Explanation
https://www.oracle.com/a/tech/docs/twp-upgrade-oracle-database-19c.pdf

NEW QUESTION # 70
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Oracle 1Z1-083 Certification Exam requires candidates to have a deep understanding of Oracle database architecture, SQL, and PL/SQL. Candidates should also have experience in database administration, performance tuning, and database security. 1Z0-083 exam is designed to test candidates’ knowledge of advanced database administration concepts, such as database performance tuning, database security, and high availability solutions.

 

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