Oracle Oracle Database 12c Essentials 1z0-497 Exam Dumps: Updated Questions & Answers (October 2025)

You copy all the PDBSSEEDdata files from the production CDB into the development CDB and execute this on the development CDB;

SQL> CREATE PLUGGABLE DATABASE salesdev ADMIN USER salesdm IDENTIFIED by password;

You alter the salesprd source database to open in read-only mode, and start cloning the source database:

SQL> ALTER PLUGGABLE DATABASE salesprd OPEN READ ONLY;

SQL> CREATE PLUGGABLE DATABASE salesdev FROM salesprd;

You alter the salesprd source database to open in read-only mode:

SQL> ALTER PLUGGABLE DATABASE salesprd OPEN READ ONLY;

In the development CDB, you create a databaselink "PRD" that connects to the root of the source CDB, and start cloning the source PDB:

SQL> CREATE PLUGGABLE DATABASE salesdevFROM salesprd@prd;

Connected as the salesprd local DBA, you create an XML using:

SQL> ALTER PLUGGABLE DATABASE salespdb UNPLUG INTO ' /tmp/salesprd-xml' ;

Copy the XML file and all salesprd-related files to the target CDB and start plugging the copy into the development CDB using:

SQL> CREATE PLUGGABLE DATABASE salesdev USING' /tmp/salesprd.xml';

Database Buffer Cache

Undo Log Buffer

Shared Pool

Small Pool

Java Pool

Private SQL Area

1, 2, 3, 4, 5

2, 1, 5, 3, 4

5, 1, 2, 3, 4

2, 3, I, 5, 4

1, 2, 4, 5, 2

The GDS catalog database of its listener may be down. Verify that the GDS catalog database and its local listener are running.

The GDS pool database may be down. Make sure that the GDS pool databases are up and the service is enabled and started.

The GDS pool database's local listener may be down. Make sure that it is running.

The global service may be down. Verify that the pool databases are up and the service is started.

The global service may be disabled. Make sure that the pool databases are up and the service is enabled and started.

The buffer must be written to flash cache.

A log writer (LGWR) must write all redo entries that have been copied into the buffer since the last time it wrote.

The modified data block must be moved from the LRU list to the write queue.

The database must advance the checkpoint.

The session is terminated after receiving the error and JIM can continue with his transaction.

SCOTT should perform a COMMIT or ROLLBACK to allow JIM to continue with his transaction.

The session is rolled back after receiving the error and JIM can continue with his transaction.

SCOTT has to re-execute the last command in the transaction after he commits the transaction.

renaming the control files

re-creating the control files

dropping a user in your database

dropping a tablespace in your database

configuring the database instance to operate in ARCHIVELOG or NOARCHIVELOG mode

EXPDP and IMPDP are the client components of Oracle Data Pump.

DBMS_DATAPUMP PL/SQL packages can be used independently of Data Pump clients.

Oracle Data Pump export and import operations can be performed only by users with the SYSDBA privilege.

Oracle Data Pump imports can be done from the export files generated in Original Export Release 9.x.

EXPDP and IMPDP use the procedures provided by DBMS_METADATA to execute export and import commands.

PMON performs process recovery when a client process fails.

During instance startup, PMON takes care of instance recovery.

PMON performs listener registration.

PMON restarts background and dispatcher processes when they fail.

PMON resolves failures of distributed transactions.

1. LGWR writes the commit record to disk.

2. LGWR writes all redo entries from Redo Log Buffer to disk.

1. GWR writes only the transaction's redo entries from Redo Log Buffer to disk.

2. LGWR writes the commit record to disk.

1. LGWR puts the commit record to Redo Log Buffer.

2. IGWR writes all redo entries from Redo Log Buffer to disk.

1. LGWR puts the commit record to Redo Log Buffer.

2. If the activity is high, LGWR waits three seconds for other transactions to commit.

3. LGWR writes all redo log entries from Redo Log Buffer to disk.

1. LGWR puts the commit record to Redo Log Buffer.

2. LGWR signals the database writer (DBW) process to write dirty blocks to disk.

3. LGWR writes all redo entries from Redo Log Buffer to disk.