Oracle 1z0-083 Exam Questions Free Practice Test

Viewing page 8 out of 8 pages

Viewing questions 71-80 out of questions

Questions # 71:

Which two are true about the character sets used in an Oracle database? (Choose two.)

Options:

Single-byte character sets provide better performance than multibyte character sets.

Unicode enables information from any language to be stored using a single character set.

Unicode is the only supported character set for Oracle databases created using Database Configuration Assistant (DBCA).

Single-byte character sets always use 7-bit encoding schemes.

Multibyte character sets allow more efficient space utilization than single byte character sets.

Single-byte character sets always use 8-bit encoding schemes.

Expert Solution

Questions # 72:

Examine the query and its output executed In an RDBMS Instance: Which three statements are true about the users (other than sys) in the output?

Options:

TheC# # B_ADMIN user can perform all back up and recovery operation susing RMAN only.

The C # # C_ADMIN user can perform the data guard operation with Data Guard Broker.

The C # # A_ADMIN user can perform wallet operations.

The C # # D_ADMIN user can perform backup and recovery operations for Automatic Storage Management (ASM).

The C # # B_ADMIN user can perform all backup and recovery operations using RMAN or SQL* Plus.

Expert Solution

Questions # 73:

A user complains about poor database performance. You want to verify if the user’s session has waited for certain types of I/O activity. Which view displays all waits waited on by a session at least once?

Options:

V$SESSION_EVENT

V$SESSTAT

V$SESSION_WAIT

V$SESSION_WAIT_CLASS

V$SESSION

Expert Solution

Questions # 74:

Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)

Options:

A direct upgrade can be performed only from the immediately preceding Oracle Grid Infrastructure version.

The newer version is installed in a separate Oracle Grid Infrastructure home on the same server as the existing version.

An existing Oracle base can be used.

The upgrade process will automatically install all mandatory patches for the current version of Oracle Grid Infrastructure.

Existing Oracle Database instances must be shut down before starting the upgrade.

Only the grid user can perform the upgrade.

Expert Solution

Questions # 75:

Choose two. Which two are true about the Optimizer Statistics Advisor?

Options:

It always analyzes all schemas in the database.

It can recommend changes to improve the statistics gathering process.

It can be run only manually.

It runs automatically every night by default. E) It can be run only automatically.

Expert Solution

Questions # 76:

Which two are true about RMAN duplexed backup sets? (Choose two.)

Options:

A duplexed backup set uses the same number of SBT channels as a non-duplexed backup set for the same number of files.

A non-duplexed backup set written to disk can be duplexed to disk by backing up the backup set that is already on disk.

A non-duplexed backup set written to SBT can be duplexed to tape by backing up the backup set that is already on tape.

A non-duplexed backup set written to disk can be duplexed to tape by backing up the backup set that is already on disk.

A non-duplexed backup set written to SBT can be duplexed to disk by backing up the backup set that is already on tape.

A duplexed backup set always uses twice as many SBT channels as a non-duplexed backup set for the same number of files.

Expert Solution

Questions # 77:

Which two statements are true about Resource Manager plans for individual pluggable databases (PDB plans) in a multitenant container database (CDB)?

Options:

If no PDB plan is enabled for a pluggable database, then all sessions for that PDB are treated to an equal degree of the resource share of that PDB.

In a PDB plan, subplans may be used with up to eight consumer groups.

If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups across all PDBs in the CDB.

If no PDB plan is enabled for a pluggable database, then the PDB share in the CDB plan is dynamically calculated.

If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups based on the shares provided to the PDB in the CDB plan and the shares provided to the consumer groups in the PDB plan.

Expert Solution

Questions # 78:

Choose three. Which three are true about Oracle Restart?

Options:

It is used in both clustered and non-clustered environments.

You can add and remove components from an Oracle Restart configuration with Server Control (SRVCTL) commands.

It runs from the Oracle Grid Infrastructure home.

If you shut down a database instance with SQL*Plus, Oracle Restart interprets this as a database failure and attempts to restart the instance.

The Server Control (SRVCTL) utility can be used to start and stop Oracle Restart.

It can manage Oracle Database instances, Oracle Net Listeners, and Oracle Automatic Storage Management instances.

Expert Solution

Questions # 79:

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

Options:

The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is closed.

RMAN disk-based backups of the database to be duplicated can be used by the auxiliary instance.

The UNDO TABLESPACE clause is always required when no connection exists to the TARGET instance.

The UNDO TABLESPACE clause is never required.

RMAN "pushes" the backups of the database to be duplicated over the network to the auxiliary instance.

Expert Solution

Viewing page 8 out of 8 pages

Viewing questions 71-80 out of questions

Pass the Oracle Oracle Database 19c 1z0-083 Questions and answers with CertsForce