[Dec 17, 2024] 100% Pass Guarantee for 1Z0-083 Dumps with Actual Exam Questions [Q108-Q122]

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December 17, 2024

[Dec 17, 2024] 100% Pass Guarantee for 1Z0-083 Dumps with Actual Exam Questions [Q108-Q122]

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[Dec 17, 2024] 100% Pass Guarantee for 1Z0-083 Dumps with Actual Exam Questions

Today Updated 1Z0-083 Exam Dumps Actual Questions

NO.108 Choose three. Which three are true about the tools for diagnosing Oracle Database failure situations?

RMAN can always repair corrupt blocks.

Flashback commands help with repairing physical errors.

The ADR can store metadata in an Oracle Database repository.

The Automatic Diagnostic Repository (ADR) has a separate home directory for each instance of each Oracle product that is installed and uses it.

The ADR command-line utility (ADRCI) can package incident information to send to Oracle Support.

The Data Recovery Advisor uses the ADR.

NO.109 Which two are true about the character sets used in an Oracle database? (Choose two.)

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.

Reference:
https://docs.oracle.com/database/121/NLSPG/ch2charset.htm#NLSPG166

NO.110 Which two are true about OS groups and users for Oracle Grid Infrastructure and the Oracle Relational Database Management System (RDBMS)?

The Oracle Grid Infrastructure Installation must be owned by the grid user.

The Oracle Grid Infrastructure owner owns Oracle Restart and Oracle Automatic Storage Management binaries.

The primary group for the Oracle Grid Infrastructure and Oracle Database owners must be the Oracle Inventory group.

The Oracle Grid Infrastructure owner must have OSOPER, OSBACKUPDBA, and OSKMDBA as secondary groups.

The same OSDBA group must be used for Automatic Storage Management and the Oracle Database.

By default, members of the OSASM group can access Automatic Storage Management and RDBMS instances.

NO.111 Examine this configuration:
* CDB1 is a container database.
* PDB1 and PDB2 are pluggable databases in CDB1.
* PDB1 and PDB2 are OPEN in READ WRITE mode.
You execute these commands successfully:

Which two are true? (Choose two.)

Uncommitted transactions in PDB1 have been rolled back.

PDB1 is closed.

Uncommitted transactions in CDB1 and PDB1 have been rolled back.

CDB1 is shut down.

CDB1 is in MOUNT state

NO.112 Examine this configuration:
* CDB1 is a container database.
* PDB1 and PDB2 are pluggable databases in CDB1.
You execute these commands successfully:

Which two are true? (Choose two.)

PDB1 and PDB2 are in MOUNT state.

Redo logs are opened.

PDB1 and PDB2 are in READ ONLY state.

CDB$ROOT is in MOUNT state.

PDB$SEED is in READ ONLY state.

NO.113 Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)

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.

NO.114 Which two are true about OS groups and users for Oracle Grid Infrastructure and the Oracle Relational Database Management System (RDBMS)? (Choose two.)

By default, members of the OSASM group can access Automatic Storage Management and RDBMS instances.

The primary group for the Oracle Grid Infrastructure and Oracle Database owners must be the Oracle Inventory group.

The Oracle Grid Infrastructure installation must be owned by the grid user.

The Oracle Grid Infrastructure owner owns Oracle Restart and Oracle Automatic Storage Management binaries.

The Oracle Grid Infrastructure owner must have OSOPER, OSBACKUPDBA, and OSKMDBA as secondary groups.

The same OSDBA group must be used for Automatic Storage Management and the Oracle Database.

A – false – Members of this group are granted the SYSASM system privilege to administer Oracle ASM.SYSASM system privileges do not grant access privileges on an Oracle Database instance.
B – Correct –
C – false Only if you wish to define role separation but is not a must
D – correct
E – false OSOPER is optional is not a must
F – the same OSDBA could be used but is not a must ( usually SYSDBA and SYSASM are used for separation us duties )

NO.115 Which two are true about backup set compression using RMAN default compression? (Choose two.)

Compressed backups can be written only to media.

Binary compression adds CPU overhead to backup operations.

Unused blocks below the high water mark are backed up.

Compressed backups cannot have a section size defined.

Compression can be done only for locally managed tablespaces.

NO.116 Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.)

A PDB snapshot is always a full copy of the source PDB.

A PDB snapshot is always a sparse copy of the source PDB.

A snapshot copy PDB depends on a storage snapshot which can only be stored on specific file systems.

A PDB snapshot depends on a storage snapshot which can be stored on any file system.

A PDB snapshot depends on a storage snapshot which can only be stored on specific file systems.

A snapshot copy PDB depends on a storage snapshot which can be stored on any file system.

A snapshot copy PDB can be created from a stand-alone clone PDB.

NO.117 Which three are true about Oracle Grid Infrastructure for a Standalone Server?

It includes both Oracle Restart and Oracle Automatic Storage Management (ASM) software.

It creates one disk group during installation.

It requires the operating system oracle_base environment variable to be predefined before installation.

It requires Oracle ASM Filter Driver (ASMFD) to manage Automatic Storage Management (ASM) disks

It requires Oracle ASMLibto manage Automatic Storage Management (ASM) disks.

Automatic Storage Management (ASM) requires that O/S groups OSASM and OSDBA be assigned as secondary groups for its installation owner.

NO.118 Choose two. In performance management, which two factors might reduce the ability of an application to scale to a larger number of users?

poorly trained users who do not commit transactions

the number of tablespaces containing tables updated by a transaction

issuing multiple savepoints during a transaction

the number of data files containing extents belonging to tables updated by a transaction

poorly written SQL

NO.119 Which three are true about block media recovery? (Choose three.)

The data file containing the block being recovered remains online.

To use it, Flashback Database must be enabled.

A block being recovered is not accessible.

It can be performed on noncorrupt blocks.

The target database for which one or more blocks are to be recovered must be in the OPEN state.

It cannot repair logical corruption.

https://docs.oracle.com/en/database/oracle/oracle-database/19/bradv/rman-block-media- recovery.html#GUID-C1164158-496C-4D8A-8A06-D343935FC3B9 It tells that flashback is a must “Flashback Database must be enabled on the target database for RMAN to search the flashback logs for good copies of corrupt blocks.” It also says “Block media recovery may not be able to repair all logical block corruptions. In these cases, alternate recovery methods, such as tablespace point-in-time recovery, or dropping and re-creating the affected objects, may repair the corruption.”

NO.120 Examine this configuration:
1. The ORCLdatabase data files are in Automatic Storage Management (Oracle ASM) disk group +DATA.
2. ORCLuses disk group +FRAfor the Fast Recovery Area.
3. LISTENER is the listener for ORCL.
4. The database, listener, ASM instance, and ASM disk groups are managed by Oracle Restart.
5. All components are currently shut down.
You execute this command:

What is the outcome?

The ORCL database, the Oracle ASM instances, the +DATAand +FRAdisk groups, and the LISTENER are started.

Only the ORCL database instance is started.

Only the ORCLdatabase and the ASM instances are started.

Only the ORCLdatabase instance, the Oracle ASM instance, and the +DATAand +FRAdisk groups are started.

Only the ORCLdatabase instance and the +DATAand +FRAdisk groups are started.

NO.121 Which three are true about requirements for various flashback operations?

flashback version query requires undo to retrieve all versions of a row that existed between two points in time.

flashback drop requires that the recyclebin parameter be set to on.

flashback data archive requires undo to store all versions of all rows of a table being tracked.

flashback transaction query requires undo to retrieve all versions of a row that existed between two points in time.

flashback drop requires undo to retrieve all versions of a row that existed between two points in time.

flashback version query requires that the recyclebin parameter be set to on.

NO.122 Automatic Shared Memory Management is disabled for one of your database instances.
Some SQL statements perform poorly due to excessive hard parse activity, thereby degrading performance.
What would be your next step?

Run the SQL Access Advisor.

Run the Memory Advisor for the shared pool.

Run the SQL Tunning Advisor.

Run the Memory Advisor for the Program Global Area.

Run the Memory Advisor for the System Global Area.

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