Free Access Oracle.1Z0-083.v2026-05-24.q248 Practice Test (Page 29)

Question 136

A container database called CDB1 is OMF-enabled.
PDB_FILE_NAME_CONVERT is not configured in CDB1. PDB1 was unplugged from CDB1 earlier in the week. Examine this command, which will be executed in CDB1:
CREATE PLUGGABLE DATABASE pdb1
USING '/u01/app/oracle/oradata/pdb1.xml'
SOURCE_FILE_NAME_CONVERT =
('/u01/app/oracle/oradata/', '/u02/app/oracle/oradata/');
Which two are true? (Choose two.)

A.PDB1 must be dropped from CDB1.

B.DBMS_PDB.CHECK_PLUG_COMPATIBILITY must be run in CDB1 before executing the command.

C.PDB_FILE_NAME_CONVERT must be set before executing the command.

D.PDB1 data files already exist in the correct location.

E./u01/app/oracle/oradata/pdb1.xml does not contain the current locations of data files for PDB1.

Question 137

Examine this configuration:
1.The ORCL database data files are in Automatic Storage Management (Oracle ASM) disk group +DATA.
2.ORCL uses disk group +FRA for 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?

A.Only the ORCL database and the ASM instances are started.

B.The ORCL database, the Oracle ASM instances, the +DATA and +FRA disk groups, and the LISTENER are started.

C.Only the ORCL database instance is started.

D.Only the ORCL database instance, the Oracle ASM instance, and the +DATA and +FRA disk groups are started.

E.Only the ORCL database instance and the +DATA and +FRA disk groups are started.

Question 138

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

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

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

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

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

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

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

Question 139

Choose three. Which are the three steps in the SQL tuning process for Oracle Database environments?

A.Identify poorly tuned SQL statements using Automatic Database Diagnostic Monitor.

B.Test tuned SQL statements one at a time for all statements in the application.

C.Test the application as a whole using tuned SQL statements.

D.Identify poorly tuned SQL statements using the SQL Tuning Advisor.

E.Tune SQL statements as a group using the SQL Tuning and SQL Access Advisors.

F.Tune individual SQL statements using the SQL Tuning Advisor.

Question 140

Which two statements are true about indexes and their administration in an Oracle database?

A.A descending index is a type of bitmapped index.

B.An index is always created by scanning the key columns from the underlying table.

C.A non-unique index can be converted to a unique index using a Data Definition Language (DDL) command.

D.An index can be scanned to satisfy a query without the indexed table being accessed.

E.An invisible index is maintained when a Data Manipulation Language (DML) command is per- formed on its underlying table.

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