Bring up of Cold Backup of RAC Database as NON-RAC Database, with a Few Missing Datafile ?

Folks

Qs For Bring up of Cold Backup of RAC Database as a NON-RAC Database (with a Few Missing Datafiles) is RE-Creation of Control file mandatory?

CASE DETAILS - Cold backup was taken from a Testing RAC (NOT production) Database (version 10.2.0.2) into Tapes & Database Deleted from respective machine. The Tapes were extracted into a machine having only a NON-RAC ORACLE_HOME (Same version 10.2.0.2) but into a Different Directory Structure (versus that from which backup was taken). 25 datafiles were to be found missing in the Backup Tapes

AIM To Bring UP the Database in its present Condition.

Approach 1

Qs - Is Controlfile RE-Creation Mandatory? If NOT so, Will the following Steps Work?

1 - Using NON-RAC ORACLE_HOME (Same Version)
2 - Set cluster_database=FALSE, _no_recovery_through_resetlogs=TRUE in NON-RAC init.ora
3 - Using extracted RAC Controlfile, STARTUP MOUNT
4 - Update the same controlfile by issuing "ALTER DATABASE RENAME FILE 'Old Path' TO 'New Path';
5 - To RE-Create Online Redo Logs issue "RECOVER DATABASE USING BACKUP CONTROLFILE" followed by "ALTER DATABASE OPEN RESETLOGS". Will this Step 5 succeed or FAIL ?

Approach 2 - If Controlfile RE-Creation is Mandatory, Will the following Steps Work?

1 - Using NON-RAC ORACLE_HOME (Same Version)
2 - Set cluster_database=FALSE, _no_recovery_through_resetlogs=TRUE in NON-RAC init.ora
3 - Edit the Control file to Trace SQL Script to Remove the Missing Datafile names & RE-Create the Controlfile after STARTUP NOMOUNT
4 - To RE-Create Online Redo Logs issue "ALTER DATABASE OPEN RESETLOGS"
5 - Datafiles whose names were purposely Removed from the Controlfile Trace will appear as "MISSINGnnnnnn"
6 - Is Dropping of these ""MISSINGnnnnnn" datafiles possible?

Cheers & thanks

Vivek

• CAUTION - Disclaimer ***************** This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system. ***INFOSYS******** End of Disclaimer ********INFOSYS***

--
http://www.freelists.org/webpage/oracle-l