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Disable database in NOARCHIVELOG mode in Oracle database 11gR2

Posted by Mir Sayeed Hassan on February 13th, 2018

Disable database in NOARCHIVELOG mode in Oracle database 11gR2

Check the database Instance Name & Version

sys@TESTDB>select INSTANCE_NAME, VERSION from v$instance;
INSTANCE_NAME    VERSION
---------------- ----------
testdb           11.2.0.4.0

Check the status of the...
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Posted in RMAN | Comments Off on Disable database in NOARCHIVELOG mode in Oracle database 11gR2

Enable database in Archivelog mode in Oracle database 11gR2

Posted by Mir Sayeed Hassan on February 13th, 2018

Enable database in Archivelog mode in Oracle database 11gR2

Check the database Instance  Name & Version

sys@TESTDB>select INSTANCE_NAME, VERSION from v$instance;

INSTANCE_NAME    VERSION
---------------- -----------------
testdb           11.2.0.4.0

Check...
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Posted in RMAN | Comments Off on Enable database in Archivelog mode in Oracle database 11gR2

Managing the UNDO TABLESPACE in Oracle database 11gR2

Posted by Mir Sayeed Hassan on February 12th, 2018

Managing the UNDO TABLESPACE in Oracle database 11gR2

In an Oracle DB the undo tbs is used for maintaining the information that is used to rollback or any undo changes to the database.

The Undo records are more used as shown below:

  • Rollback the transactions when a ROLLBACK statement is issued
  • Recover...
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Managing Multiplexing of Control Files in Oracle database 11gR2

Posted by Mir Sayeed Hassan on February 12th, 2018

Managing Multiplexing of Control Files in Oracle database 11gR2

As per the Oracle DB, every db has its own controlfile; the control file is a binary file that records the physical structure of the db

 The control file contains:

  • The database name
  • Name & location of datafiles...
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Managing Temporary Tablespaces in Oracle database 11gR2

Posted by Mir Sayeed Hassan on February 10th, 2018

Managing Temporary Tablespaces in Oracle database 11gR2

The temporary tablespace is basically used for sorting the large tables in database & database should contain 1 temp tbs in it, this temp tbs are created while creation of the database itself, Therefore if it requires you can create multiple temp tbs in the database.

sys@TESTDB>... 
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Increase or decrease the size of Tablespace and Datafiles in Oracle database 11gR2

Posted by Mir Sayeed Hassan on February 10th, 2018

Increase or decrease the size of Tablespace and Datafiles in Oracle database 11gR2

 To Increase/extend the Size of a tablespace

Method 1 – Increase/Extend the size of the tbs using the resize keyword as shown below:

sys@TESTDB> select INSTANCE_NAME, VERSION from v$instance;

INSTANCE_NAME   ... 
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