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Oracle 1Z0-083 exam covers several topics related to advanced database administration, including database architecture, backup and recovery strategies, performance tuning, security management, and high availability solutions. 1Z1-083 exam is intended for professionals who have already gained a basic understanding of Oracle database administration and have experience working with Oracle databases.

Oracle 1Z0-083 exam, also known as Oracle Database Administration II, is a certification exam designed for database administrators who want to validate their skills and knowledge in managing and maintaining an Oracle database. 1Z1-083 exam is a prerequisite for the Oracle Certified Professional (OCP) certification, which is considered one of the most prestigious credentials in the IT industry.

 

NEW QUESTION # 153
Which two are true about the Oracle database methodology? (Choose two.)

• A. The alert log should be used to find the database and instance areas most in need of tuning.
• B. Tuning activities should stop once agreed service levels for performance have been met.
• C. SQL statements should always be tuned before tuning any file systems.
• D. Tuning activities should stop once the user is satisfied with performance.
• E. The database instance memory should always be tuned before tuning any file systems.
• F. The Oracle Database time model should be used to find the database and instance areas most in need of tuning.

Answer: C,F

NEW QUESTION # 154
T schema owned by the RC12C user. The RCAT11 database contains an Oracle Database version 11g catalog schema owned by the RC11 user in which several databases are registered. Both the databases are open. You execute the RMAN commands: RMAN> CONNECT CATALOG rcl2c/passl2c@catdbl2c RMAN> IMPORT CATALOG rcll/pwdcatll@ractll Which two tasks are performed as part of the import?

• A. Imported databases are unregistered from the RC11 catalog.
• B. All databases registered in the RC11 catalog are registered in the RC12C catalog.
• C. Databases from the RC12C catalog are implicitly unregistered if the RC11 catalog has registered databases with same name.
• D. Local and global stored scripts that have the same name as existing scripts in the RC12C catalog are automatically renamed.
• E. Recovery catalog is resynchronized with the control files of the registered databases.

Answer: B,D

NEW QUESTION # 155
The HR_ROOT application container must support the execution of a query on a table shared by application local PDBs PDB1 and PDB2, and remote PDB PDB3.
Which three are true? (Choose three.)

• A. A proxy PDB must exist in the application root in the remote CDB.
• B. A proxy PDB must exist in the application root in the local CDB.
• C. PDB3's application root replica must exist in the local CDB.
• D. The HR_ROOT replica must exist in the remote CDB.
• E. A database link must exist in the remote CDB referring to the local CDB.
• F. A database link must exist in the local CDB root referring to the remote CDB.

Answer: B,D,F

Explanation:
Database link must be created in master application root (local CDB) referring to replica application root (remote CDB). Option B Proxy PDB must be created in master application root (local CDB) using this database link.
Option F
Replica application root must exist in remote CDB (created or upgraded using SYNC in local Proxy PDB). Option E With this, we can make a SELECT that will show data from local and remote PDB applications (Query in local master application root using CONTAINERS clause).
https://docs.oracle.com/en/database/oracle/oracle-database/18/multi/administering-application- containers-sql-plus.html#GUID-B96087B5-678C-4781-9464-42FC468B1FCC

NEW QUESTION # 156
Which three are true about opatchauto? (Choose three.)

• A. It applies patches in nonrolling mode by default.
• B. It requires the Oracle Grid Infrastructure and Oracle Database instances to be shut down before being invoked.
• C. It performs a shutdown and then a restart of all processes in both Oracle Grid Infrastructure and Oracle Database home during the patching process.
• D. It is used to apply interim patches to Oracle Grid Infrastructure and Oracle Database home combinations.
• E. Patches are applied via opatchauto.
• F. It must be invoked by a user with root user privileges.
• G. Users must always input patch plans to opatchauto.

Answer: C,D,F

Explanation:
A). It performs a shutdown and then a restart of all processes in both Oracle Grid Infrastructure and Oracle Database home during the patching process. => True
B). It must be invoked by a user with root user privileges. => true
C). Patches are applied via opatchauto. => not always.
D). Users must always input patch plans to opatchauto. => false, patch plans is optional
E). It requires the Oracle Grid Infrastructure and Oracle Database instances to be shut down before being invoked. => false
F). It applies patches in nonrolling mode by default. => false, default is rolling mode.
G). It is used to apply interim patches to Oracle Grid Infrastructure and Oracle Database home combinations. => true Reference:
https://docs.oracle.com/cd/E24628_01/doc.121/e39376/opatchauto_commands.htm#OPTCH585
https://docs.oracle.com/cd/E24628_01/doc.121/e39376/configuration_patching.htm#OPTCH149

NEW QUESTION # 157
Examine this command:
$ rhpctl move database -sourcehome Oracle_home_path -destinationhome
Oracle_home_path
For which two purposes can you use this command? (Choose two.)

• A. to switch back to the previous Oracle home as part of a rollback operation
• B. to switch the Oracle Database home when using a centralized Rapid Home Provisioning server
• C. to switch an existing Oracle Database home to a newer release of Oracle software on the same server
• D. to switch to a patched Oracle Database home
• E. to switch to a read-only Oracle home

Answer: C,D

Explanation:
Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/18/cwadd/rapid-home- provisioning.html#GUID-856C7378-2510-4B3E-8BE1-B4D79DF4FE8B

NEW QUESTION # 158
Which two are true about common objects? (Choose two.)

• A. They can be created only in CDB$ROOT.
• B. They can be created only in an application root.
• C. They can exist in user-defined schemas only in application containers.
• D. They can be only metadata-linked in an application container.
• E. They can exist in CDB$ROOT and an application root.
• F. They can be extended data-linked in CDB$ROOT.

Answer: B,C

Explanation:
Reference:
https://blog.toadworld.com/2017/08/01/oracle-multi-tenant-application-containers-part-iii-sharing- of-data-in-application-common-objects

NEW QUESTION # 159
Which two are true about common objects? (Choose two.)

• A. They can be created only in CDB$ROOT.
• B. They can be created only in an application root.
• C. They can be only metadata-linked in an application container.
• D. They can exist in user-defined schemas only in application containers.
• E. They can exist in CDB$ROOT and an application root.
• F. They can be extended data-linked in CDB$ROOT.

Answer: B,F

NEW QUESTION # 160
Your SALES_ROOTapplication container has two application PDBs.
The SALES_APPapplication has a common table, FIN.REVENUE, in the two PDBs.
Examine this query and its output:

Which two are true? (Choose two.)

• A. The MAPTABLE tables defines a logical partition key on a commonly used column for the REVENUE table.
• B. The REVENUE table partitions are not pruned across the PDBs automatically.
• C. A container map exists for the REVENUE table, but is not enabled.
• D. The REVENUE table must be a list-partitioned table.
• E. The CONTAINERS clause cannot be used in queries on the REVENUE table.
• F. The MAPTABLE table is a metadata-linked table.

Answer: A,B

Explanation:
Tested in lab with exact same setting like in the output shown.
A). -> incorrect - The CONTAINERS clause can be used.
B). -> incorrect - It can be also a range based.
C). -> CORRECT - https://docs.oracle.com/en/database/oracle/oracle-database/19/multi/administering-application-containers-with-sql-plus.html#GUID-AAF93A02-7C70-4024-8758-E351C213543E
D). -> incorrect - Regular table
E). -> incorrect - shown in the output CONTAINER_MAP = YES
F). -> CORRECT - because CONTAINERS_DEFAULT is not enabled for the revenue table.

NEW QUESTION # 161
Which two are true about creating RMAN backups for an Oracle container database? (Choose two.)

• A. Tablespaces from different PDBs with identical names must be backed up by connecting RMAN separately to each PDB to back up the tablespaces.
• B. The BACKUP DATABASE command will create a pluggable database (PDB) backup when RMAN is connected to a PDB.
• C. The BACKUP DATABASE PLUS ARCHIVELOG command will back up archive logs when RMAN is connected to a PDB.
• D. SPFILE backups can be created while connected to an application root PDB.
• E. The BACKUP PLUGGABLE DATABASE command can be used to back up CDB$ROOT.

Answer: B,E

Explanation:
E is correct
tested: backup pluggable database "cdb$root". the quotes due to the $ symbol. it backups only the root container files (no pdb datafiles).
tested CD: both incorrect
Tested b: correct
A is not correct due to the "must". you can connect to cdb and distinguish between tbs with same name in different pdbs with qualifying RMAN> BACKUP TABLESPACE pdb1:system, pdb1:sysaux, pdb1:users, pdb2:system;

NEW QUESTION # 162
hoose two. Which two are true about Recovery Manager (RMAN) diagnostic message output?

• A. RMAN error stacks should be read from the bottom up as that is the order in which errors are generated.
• B. Media Management messages for SBT devices are written to an Oracle trace file.
• C. The RMAN LOG command line clause causes output issued during RMAN command compilation to be written to a log file and to standard output.
• D. MAN error stacks should be read from the top down as that is the order in which errors are generated.
• E. The RMAN LOG command line clause causes output issued during RMAN command compilation to be written to a log file only.

Answer: D,E

NEW QUESTION # 163
Choose three. In which three situations can you use threshold server-generated alerts to help diagnose and fix problems?

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

Answer: A,C,F

NEW QUESTION # 164
For which two requirements can you use the user_tablespaces clause with the create pluggable database command?

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

Answer: B,D

NEW QUESTION # 165
Which two are true about RMAN backups when using a media manager? (Choose two.)

• A. The media manager layer (MML) routines provided by Oracle support any vendors' media management products.
• B. By default, a request for a proxy copy may result in a backup set being created.
• C. A media manager is required to create RMAN proxy copies.
• D. A media manager always writes RMAN requested backups to tape.
• E. A media manager is required to create RMAN image copies.

Answer: D,E

NEW QUESTION # 166
Which two are prerequisites for performing Flashback Transaction?

• A. Fast Recovery Area must be enabled for the database
• B. The EXECUTE privilege must be granted to a user on the DBMS_FLASHBACK package.
• C. Row movement must be enabled.
• D. Undo retention guarantee must be configured for the database.
• E. A supplemental log must be enabled for the primary key.

Answer: B,E

NEW QUESTION # 167
Choose three. Which three are true about RMAN archival backups with the RESTORE POINT clause?

• A. The SPFILE is included in the archival backup.
• B. They can optionally be written to a fast recovery area (FRA).
• C. All archive logs are retained after an archival backup is taken, until the next archival backup is taken of the same database.
• D. Archive logs are retained if they are necessary to allow the database to be recovered to a consistent state when an archival backup is restored.
• E. They are never considered obsolete by RMAN.
• F. Use of a recovery catalog is always required to support the creation and use of archival backups. G)The ARCHIVAL attribute for a backup overrides the RMAN retention policy.

Answer: A,D

NEW QUESTION # 168
How do you configure a CDB for local undo mode?

• A. Open the CDB instance in restricted mode. In CDB$ROOT, execute ALTER DATABASE LOCAL UNDO ON, and create an UNDO tablespace in each PDB, then restart the CDB instance.
• B. Open the CDB instance in upgrade mode. In each PDB, execute ALTER DATABASE LOCAL UNDO ON, create an UNDO tablespace, and then restart the CDB instance.
• C. Open the CDB instance in upgrade mode. In CDB$ROOT, execute ALTER DATABASE LOCAL UNDO ON, and then restart the CDB instance.
• D. Open the CDB instance in read-only mode. In CDB$ROOT, execute ALTER DATABASE LOCAL UNDO ON, and then change the CDB to read/write mode.
• E. Open the CDB instance in restricted mode. In CDB$ROOT, drop the UNDO tablespace. Execute ALTER DATABASE LOCAL UNDO ON in each PDB, and then restart the CDB instance.

Answer: A

NEW QUESTION # 169
Which three are true about Transparent Data Encryption (TDE)?

• A. It encrypts only data on the client.
• B. It uses a single master key for a database.
• C. It stores the current and all past master keys in the keystore.
• D. Master encryption keys are managed by Oracle Database Vault.
• E. It can encrypt data at the column level.
• F. It replaces secure application roles.

Answer: C,D,E

NEW QUESTION # 170
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To prepare for the Oracle 1Z1-083 exam, candidates can take advantage of various resources offered by Oracle, such as official training courses, practice exams, and study guides. Candidates can also gain hands-on experience by working with Oracle databases and practicing the tasks covered in the exam. Passing the Oracle 1Z1-083 exam is a significant achievement for database administrators and can lead to better job opportunities and higher salaries.

 

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