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Don Burleson Blog 







Restore Oracle Database tips

Oracle Database Tips by Donald BurlesonFebruary 10, 2015

I need to restore my Oracle database, yet I find lots of methods described in the documentation.  How do I know the proper way to restore my Oracle database?


Answer:  The answer to when to restore your Oracle database depends upon the way that you are taking backups of the database and how you are managing your archived redo logs.


   1:  RMAN:  You use the Recovery Manager to restore the Oracle database files and redo logs.

   2: Recover command:  You manually restore the data files from a (hot or cold) backup and manually apply the archived redo logs with the recover command 

Recovery of your Oracle Database with RMAN

This section is about using the backups you made earlier in this chapter, and recovering your database with them.

Recovery is one of the most complex Oracle topics. This section addresses basic recovery scenarios. Before you can restore your database using RMAN, the following needs to be properly in place (this assumes a full system loss):

* The operating system must be installed

* The Oracle software must be installed

* The RMAN backup files must be available

* You must create the file systems that the database files will be restored to.

Once these pieces are in place you can restore your database. In the event of a full system loss you will need to replace:


* The Control File

* The database datafiles

If the SPFILE or control file is intact, you will not need to replace that component. The following sections walk you through each restore step. We assume you have followed the backup procedures earlier in this chapter, including the automated backup of SPFILES and control files.   Please see these detailed notes on restoring an Oracle database with RMAN.

Restore Command


You can use a manual recovery of the Oracle database using OS file backups.


See these related notes on restoring your Oracle database:


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Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

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