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Oracle Restore systemDB; dataDB

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Occasional Contributor

Oracle Restore systemDB; dataDB

I need some help to understand systemDB, dataDB recovery procedures for the discussion with our operatons team (Oracle DBA).

 

Use case:

- MEGA users dispatched some bulk updates in a repository which shouldn´t have been done and want to rollback to dataDB content from 2 days ago

 

Required action:

- restore dataDB only?

- restore dataDB + systemDB?

 

Can you help or point me to the correct document

 

--------------------

HOPEX V1R3CP11

 

2 Replies
MEGA

Re: Oracle Restore systemDB; dataDB

Hello KElsner

 

It is recommended to restore both systemdb and data repositories
Otherwise there can be mismatches.

 

  • For Oracle storage, it is recommended to have
    1 schema per data repository
    1 schema for the systemdb

 

If data is backed up in Oracle, you should be able to restore the corresponding schemas in Oracle
Then you can create a new environment with the option 'Restore'

Pay attention to keep the same name for environment (this inf

ormation is saved in a table and checked).

The reference document is RDBMS Repository Installation Guide HOPEX V1R2-V1R3 EN
http://community.mega.com/t5/HOPEX-V1R2-V1R3/HOPEX-V1R2-V1R3-Deployment-amp-Upgrade/ta-p/8059

See section 'Restoring a Mega environment from formatted data'

Jerome
Occasional Contributor

Re: Oracle Restore systemDB; dataDB

Hello Jerrome,

 

many thanks for the clear instruction and the document. That was exactly what I was looking for.

 

Best regards

Kai