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To prepare for the Oracle 1Z0-083 exam, candidates should have a deep understanding of Oracle database architecture and administration concepts. They should also have experience in managing and maintaining Oracle databases in production environments. Additionally, candidates can take advantage of Oracle's training resources, which include online courses, workshops, and practice exams.

The 1Z0-083 exam is a comprehensive exam that covers a wide range of topics related to Oracle database administration. This includes advanced topics such as database performance tuning, backup and recovery, high availability, and security management. Passing 1Z0-083 Exam demonstrates that the candidate has a deep understanding of Oracle database administration concepts and is capable of performing complex tasks related to database management.

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Oracle 1Z0-083 exam is designed to test the candidate's knowledge and skills in a variety of areas related to database administration. These include database security, backup and recovery, performance tuning, and database maintenance. 1Z0-083 Exam also covers advanced topics such as high availability, data replication, and database upgrades.

Oracle Database Administration II Sample Questions (Q233-Q238):

NEW QUESTION # 233
Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)

A. Only the grid user can perform the upgrade.
B. Existing Oracle Database instances must be shut down before starting the upgrade.
C. A direct upgrade can be performed only from the immediately preceding Oracle Grid Infrastructure version.
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. An existing Oracle base can be used.

Answer: A,D,F

Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/19/cwlin/restrictions-for-oracle-grid- infrastructure-upgrades.html#GUID-76797070-C2C6-4817-902C-037A67A6EF94 Oracle Grid Infrastructure upgrades are always out-of-place upgrades. You cannot perform an in- place upgrade of Oracle Grid Infrastructure to existing homes.
The same user that owned the earlier release Oracle Grid Infrastructure software must perform the Oracle Grid Infrastructure 19c upgrade.

NEW QUESTION # 234
Examine this output:

Which two are true? (Choose two.)

A. PDB3 can use all available parallel execution processes at times.
B. PDB2is guaranteed at least 25% of the available parallel execution processes if there is enough demand.
C. Any PDB not specified in the plan will be able to use a maximum of 16.5% of the available system resources.
D. PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.
E. PDB1is always limited to 40% of the available system resources regardless of demand.
F. Any PDB not specified in the plan will be unable to execute statements in parallel.

Answer: D,F

NEW QUESTION # 235
When backing up to the Oracle Fast Recovery Area (FRA), you determine that the backup takes too long and suspect a performance bottleneck.
Which two are true about diagnosing and tuning these problems?

A. Data files with a high value in v$backup_sync_io.discrete_bytes_per_second are a potential performance bottleneck when synchronous I/O is used.
B. If an rman backup validate command takes noticeably less time than an actual backup, then write I/O is a likely bottleneck.
C. If an rman backup validate command takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.
D. Data files with a high value in v$backup_async_io.short_waits are a potential performance bottleneck when asynchronous I/O is used.
E. If an rman backup validate command takes roughly the same time as an actual backup, then read I/O is a likely bottleneck.

Answer: D,E

NEW QUESTION # 236
Which two are true about Oracle Database Configuration Assistant (DBCA) templates? (Choose two.)

A. Oracle DBCA templates can store only logical structure and not database files.
B. New templates can only be created by modifying an existing user-created template.
C. The Data Warehouse template is most suitable when transaction response time is the key criterion.
D. The General Purpose of Transaction Processing templates are most suitable when concurrency and recoverability are key criteria.
E. Oracle DBCA templates can be used to create new databases and duplicate existing databases.

Answer: D,E

Explanation:
https://docs.oracle.com/database/121/ADMQS/GUID-2B8A3B5E-D319-4377-8B22-
8BB67DCC9885.htm#ADMQS0235

NEW QUESTION # 237
Which three are true about transporting databases across platforms using Recovery Manager (RMAN) image copies? (Choose three.)

A. The password file is automatically converted by RMAN.
B. Databases can be transported between systems with different endian formats.
C. A new DBID is automatically created for the transported database.
D. By default, the transported database will use Oracle Managed Files (OMF)
E. Data files can be converted on the source system.
F. Data files can be converted on the destination system.

Answer: D,E,F

Explanation:
Explanation
A: If you do not provide a destination, then the DB_FILE_CREATE_DEST initialization parameter must be set in the target platform. RMAN restores the data files to the location specified by this parameter using new Oracle Managed File (OMF) names. BC: While creating the cross-platform backup to transport a database, you can convert the database either on the source database or the destination database. The benefit of performing the conversion on the destination database is that the processing overhead of the convert operation is offloaded from the source to the destination database.

NEW QUESTION # 238
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