Based on Official Syllabus Topics of Actual Oracle 1Z0-083 Exam [Q50-Q70]

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Based on Official Syllabus Topics of Actual Oracle 1Z0-083 Exam

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Oracle 1Z1-083 exam is a credible and recognized certification that can help professionals to demonstrate their expertise in Oracle database administration. Passing 1Z0-083 exam is a clear indication that the candidate has an in-depth understanding of advanced database administration concepts and can effectively manage and administer complex databases. Additionally, this certification can provide professionals with a competitive edge in the job market, as it is highly valued by employers who are looking for skilled and knowledgeable database administrators.

QUESTION 50
Choose two. Which two are true about RMAN backups when using a media manager?

A media manager always writes RMAN requested backups to tape.

A media manager is required to create RMAN image copies.

A media manager is required to create RMAN proxy copies.

The media manager layer (MML) routines provided by Oracle support any vendors’ media management products.

By default, a request for a proxy copy may result in a backup set being created.

QUESTION 51
Examine this output:

Which two are true? (Choose two.)

Any PDB not specified in the plan will be unable to execute statements in parallel.

PDB3 can use all available parallel execution processes at times.

PDB1 is always limited to 40% of the available system resources regardless of demand.

Any PDB not specified in the plan will be able to use a maximum of 16.5% of the available system resources.

PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.

PDB2 is guaranteed at least 25% of the available parallel execution processes if there is enough demand.

QUESTION 52
Which two are true about changing the LOCAL_UNDO_ENABLED property to false in a CDB? (Choose two.)

After the change, only a common user with the required privilege can create an undo tablespace in CDB&ROOT.

Any new PDB and existing PDBs are automatically configured to use the default undo tablespace in CDB$ROOT.

After the change, only one undo tablespace can exist in CDB$ROOT.

After the change, any user with the required privilege can create an undo tablespace in the PDBs.

Undo tablespaces existing in PDBs must be dropped before the change.

After the change, each existing PDB has to be reopened for the new undo mode to take effect.

QUESTION 53
Which two are true about automatic block repair? (Choose two.)

Automatic block repair can repair blocks with no standby database if DB_BLOCK_CHECKING = TRUE.

Real-Time Query must be enabled on a physical standby database for automatic block repair to be done on that physical standby database.

Real-Time Query must be enabled on a primary database for automatic block repair to be done on any of its physical standby databases.

It is not possible for media corrupt blocks.

Real-Time Query must be enabled on a physical standby database for automatic block repair to be done on its primary database.

QUESTION 54
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?

3,4,6

2,3,4,5,6,7

1,3,4,6,8

1,2,3,4,5,6,7,8

QUESTION 55
Which three can be done using Oracle Database Configuration Assistant (DBCA) starting from Oracle Database 19c? (Choose three.)

cloning a remote container database in interactive mode

cloning a remote pluggable database in silent mode

relocating a remote pluggable database in interactive mode

relocating a remote container database in silent mode

cloning a remote container database in silent mode

relocating a remote pluggable database in silent mode

relocating a remote container database in interactive mode

QUESTION 56
Examine this configuration: While CDB1 is open, ‘/u02/app/oracle/fast_recover_area/cdb1/CDB1/ controlfile02.ctl’is accidentally deleted. To recover from this critical failure, you execute these commands:
What will be the outcome?

It will create ‘$ORACLE_HOME/dbs/cdb1/CDB1/controlfile02.ctl’

It will create ‘/u01/app/oralce/oradata/CDB1/controlfile/controlfile02.ctl’.

It will re-create ‘/u02/app/oracle/fast_recover_area/cdb1/CDB1/controlfile02.ctl’

It will create ‘/u01/app/oracle/product/12.2.0.1/db_1/dbs/snapcf_cdb1control02.ctl’.

It will fail because there is no autobackup of the controlfiles.

QUESTION 57
Which three are true about Automatic Workload Repository (AWR)? (Choose three.)

By default, AWR snapshots are taken every 60 minutes.

Its collection level is determined by the value of the STATISTICS_LEVELdatabase parameter.

By default, AWR snapshots are retained for 7 days.

The taking of AWR snapshots can be disabled.

AWR data is stored in the SYSTEMtablespace.

QUESTION 58
How do you configure a CDB for local undo mode?

Open the CDB instance in upgrade mode. In CDB$ROOT, execute ALTER DATABASE LOCAL UNDO ON, and then restart the CDB instance.

Open the CDB instance in restricted mode. In CDB$ROOT, execute ALTER DATABASE LOCAL UNDO ON, and create an UNDO tablespace in each PDB, then restart the CDB instance.

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.

Open the CDB instance in read-only mode. In CDB$ROOT, execute ALTER DATABASE LOCAL UNDO ON, and then change the CDB to read/write mode.

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.

QUESTION 59
Unified auditing is enabled in your database. The HR_ADMIN and OE_ADMIN roles exist and are granted system privileges. You execute the command:
SQL>CREATE AUDIT POLICY table_aud PRIVILEGES CREATE ANY TABLE, DROP ANY TABLE ROLES hr_admin,oe_admin; Which statement is true?

It succeeds and needs to be enabled to capture all SQL statements that require either the specified privileges or any privilege granted to the HR_ADMIN or OE_ADMIN role.

It fails because the command does notspecify when the unified audit policy should be enforced.

It succeeds and starts capturing only successful SQL statements for all users who have either the specified privileges or roles granted to them.

It fails because system privileges cannot be granted with roles in the same audit policy.

QUESTION 60
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?

all backups prior to 10th of August

all backups prior to 22nd of August

all backups prior to 24th of August

all backups prior to 20th of August

all backups prior to 17th of August

QUESTION 61
Which statement correctly describes the SQL profiling performed by the SQL Tuning Advisor?

It is a set of recommendations by the optimizer to create new indexes.

It is a set of recommendations by the optimizer to restructure a SQL statement to avoid suboptimal execution plans.

It is auxiliary information collected by the optimizer for a SQL statement to help use better joins orders.

It is auxiliary information collected by the optimizer for a SQL statement to eliminate estimation error.

It is a set of recommendations by the optimizer to change the access methods used.

QUESTION 62
For which two requirements can you use the USER_TABLESPACE clause with the CREATE PLUGGABLE DATABASE command? (Choose two.)

to specify a default tablespace in a PDB cloned from another PDB in the same CDB.

to exclude all tablespaces except SYSTEM, SYSAUX, and TEMP when plugging in a PDB

to include specific user tablespaces only when relocating a PDB

to specify the list of user tablespaces to include when moving a non-CDB to a PDB

to exclude a temp tablespace when plugging in a PDB

to specify the list of tablespaces to include when creating a PDB from the CDB seed

QUESTION 63
Which statement describes the significance of the CHANGE FAILURE command in RMAN?
(Choose all that apply.)

It is used to change failure priority only for HIGH or LOW priorities.

It is used to execute the advised repair script.

It is used to change failure priority only for the CRITICAL priority.

It is used to explicitly close the open failures.

It is used to inform the database about the repair after the repair script executes.

QUESTION 64
For which two tasks can you use the DBMS_PDB.DESCRIBE procedure?

to generate an XML metadata file that describes a non-CDB Oracle 12c database so that it can be plugged in as a PDB

to generate an XML metadata file from any unplugged PDB

to determine whether an XML file describes a PDB that can be plugged into the CDB in which you run the procedure

to generate a . pdb archive file for any PDB in the current CDB

to generate an XML metadata file that describes the current plugged-in PDB

QUESTION 65
Which two are true about the automatic execution of operating system scripts when performing silent mode installation starting from Oracle Database 19c? (Choose two.)

The response file can specify the root or sudo password.

The installer will prompt for the root or sudo password.

Silent install always runs operating scripts automatically.

The response file must contain the root or sudo password.

The response file can specify the path of the sudo program.

QUESTION 66
Which three are true about Recovery Manager (RMAN) in Oracle Database 19c and later releases? (Choose three.)

It is only possible for RMAN to connect to a pluggable database as a target if an RMAN Virtual Private Catalog is used.

It is always possible for RMAN to connect to a pluggable database as a target if any RMAN Catalog is used.

A Virtual Private Catalog used to register a container database must be created in a pluggable database.

A Virtual Private Catalog used to register a container database can be created in a pluggable database.

It is always possible for RMAN to connect to a pluggable database as a target.

A Virtual Private Catalog used to register a container database can be created in a non-container database.

QUESTION 67
Which two are facets of performance planning that should always be considered or implemented for an Oracle Database environment?

the configuration of storage arrays

the physical data model

defining primary keys for all tables to speed up all queries

defining foreign keys for all tables to speed up joins

using check constraints to speed up updates

QUESTION 68
Application PDBs, SALES_APP1 and SALES_APP2, must be created and they must access common tables of the SALES APP application. Examine these steps:
Install the SALES_APP application, induding the common tables, in the application root.
Install the SALES_APP application in the application root and the common tables in both the CDB root and the application root.
Create an application seed.
Install the SALES_APP application in the application seed.
Create the SALES_APP1 and SALES_APP2 application PDBs.
Sync the SALES_APP1 and SALES_APP2 application PDBs with the application root.
Sync the SALES_APP1 and SALES_APP2 application PDBs with the application seed.
Sync the application seed with the application root. Which are the minimum required steps in the correct sequence?

1,3,5,7

2,5,6

1,5,6

3,4,1.6,8

1,3,5,6,7

QUESTION 69
Choose three. Which three are true about using Database Upgrade Assistant (DBUA) to upgrade a database?

DBUA must be launched from the target Oracle Home.

Multiple databases with the same ORACLE_HOME can be upgraded simultaneously.

A whole database backup must exist before upgrade.

The Pre-Upgrade Information Tool script is executed by DBUA.

All pluggable databases are automatically upgraded as part of a container database upgrade.

The database must be opened in read-only mode.

QUESTION 70
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.)

CDB1 and CDB2 must be in shared undo mode.

A common user must exist in CDB2 with the CREATE PLUGGABLE DATABASE privilege.

All transactions in HR_PDB1 of CDB1 must commit before the cloning process starts.

Cloning HR_ROOT automatically clones HR_PDB1.

The HR_PDB1clone created in CDB2 will be in mount state when cloning ends.

Oracle 1Z0-083 Certification Exam is designed for database administrators who have already obtained the Oracle Database Administration I certification and are looking to expand their knowledge and skills in database administration. 1Z0-083 exam covers a wide range of topics, including database architecture, backup and recovery, performance tuning, security, and more. It is a comprehensive exam that requires a deep understanding of Oracle databases and their management.

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