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Oracle 1Z0-083 Certification Exam is designed for database administrators who want to validate their skills and knowledge in administering Oracle Database 19c. 1Z0-083 exam is the second part of the Oracle Database Administration certification track and focuses on advanced concepts and skills required to manage and maintain a high-performing Oracle database.

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Oracle 1Z0-083 Certification Exam is an advanced certification that validates the skills required to manage and maintain Oracle databases. It is highly valued in the industry and can open up new career opportunities. Candidates who pass the exam will receive the Oracle Database Administration II certification, which is a prerequisite for many advanced Oracle certifications.

Oracle Database Administration II Sample Questions (Q221-Q226):

NEW QUESTION # 221
Choose the best answer. Examine this configuration: 1. CDB1 is an Oracle Database 12c Release 2 container database (CDB). 2. PDB1 and PDB2 are two pluggable databases (PDBs) in CDB1. After successfully performing all the preupgrade tasks, you execute these commands from the Oracle Database 18c environment: $ export ORACLE_SID=cdb1 $ sqlplus / as sysdba SQL> STARTUP UPGRADE; SQL> SHOW pdbs CON_ID CON_NAME OPEN MODE RESTRICTED ---------------------------------------------------------------2 PDB$SEED 3 PDB1 4 PDB2 MIGRATE YES MOUNTED YES MOUNTED YES SQL> ALTER PLUGGABLE DATABASE pdb1 OPEN UPGRADE; Pluggable database altered. SQL> exit $ $ORACLE_HOME/perl/bin/perl catctl.pl -C 'PDB2' What is the outcome?

A. CDB$ROOT, PDB$SEED, PDB1, and PDB2 are upgraded.
B. Only CDB$ROOT, PDB$SEED, and PDB1 are upgraded.
C. It fails because PDB$SEED is in MIGRATE state.
D. Only CDB$ROOT, PDB$SEED, and PDB2 are upgraded.
E. It fails because PDB2 is not in UPGRADE state.
F. Only CDB$ROOT and PDB$SEED are upgraded.

Answer: E

NEW QUESTION # 222
Which two are true about the character sets used in an Oracle database? (Choose two.)

A. Unicode enables information from any language to be stored using a single character set.
B. Single-byte character sets always use 8-bit encoding schemes.
C. Single-byte character sets always use 7-bit encoding schemes.
D. Multibyte character sets allow more efficient space utilization than single byte character sets.
E. Unicode is the only supported character set for Oracle databases created using Database Configuration Assistant (DBCA).
F. Single-byte character sets provide better performance than multibyte character sets.

Answer: A,F

Explanation:
A - Single-byte character sets result in better performance than multibyte character sets, and they also are the most efficient in terms of space requirements.
Ref: https://docs.oracle.com/en/database/oracle/oracle-database/19/nlspg/choosing-character- set.html#GUID-BF26E01D-AB92-48FC-855A-69A5B3AF9A92 B - Unicode is a universal encoded character set that enables information from any language to be stored using a single character set.
Ref:
https://docs.oracle.com/cd/B19306_01/server.102/b14225/ch6unicode.htm#:~:text=Unicode%20i s%20a%20universal%20encoded%20character%20set%20that,been%20adopted%20by%20man y%20software%20and%20hardware%20vendors.

NEW QUESTION # 223
Which two are true about creating RMAN backups for an Oracle container database? (Choose two.)

A. Control file backups can be created while connected to a nonroot container.
B. Archived Redo Log backups can be created while connected to an application root CDB.
C. Control file backups can be created while connected to the root container.
D. Online Redo Log backups can be created while connected to the root container.
E. The BACKUP TABLESPACE command can back up a PDB tablespace even if RMAN is connected to CDB$ROOT.

Answer: A,B

NEW QUESTION # 224
Examine this output: Which two are true? (Choose two.)

A. PDB3 can use all available parallel execution processes at times.
B. PDB1 is always limited to 40% of the available system resources regardless of demand.
C. PDB2 is guaranteed at least 25% of the available parallel execution processes if there is enough demand.
D. PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.
E. Any PDB notspecified in the plan will be able to use a maximum of 16.5% of the available system resources.
F. Any PDB not specified in the plan will be unable to execute statements in parallel.

Answer: C

NEW QUESTION # 225
Your container database, CDB1, has an application container, HR_ROOT, with an application PDB, HR_PDB1.
You have the required privilege to clone HR_PDB1to container database CDB2, which does not contain HR_ROOT.
Which two are always true? (Choose two.)

A. CDB1 and CDB2 must be in shared undo mode.
B. A common user must exist in CDB2 with the CREATE PLUGGABLE DATABASE privilege.
C. The HR_PDB1 clone created in CDB2 will be in mount state when cloning ends.
D. All transactions in HR_PDB1 of CDB1 must commit before the cloning process starts.
E. Cloning HR_ROOT automatically clones HR_PDB1.

Answer: B,C

Explanation:
After you create the application PDB, it is in mounted mode, and its status is NEW.
https://docs.oracle.com/en/database/oracle/oracle-database/21/multi/creating-application- pdb.html#GUID-88E61123-F651-47D7-9977-B589268EBD29

NEW QUESTION # 226
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