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Connor McDonald

Thanks for the question.

Asked: May 25, 2017 - 3:17 pm UTC

Last updated: May 26, 2017 - 1:26 am UTC

Version: Oracle 12C

Viewed 10K+ times! This question is

You Asked

we has all the applications on oracle 11g. one of the dev team want to move application to oracele 12c.
can we have both the versions 11g and 12c on machine. is it recommended? what are the proc and cons involved in this.

pre-requisites and post-requisites also please.

and Connor said...

There is no issue with having multiple versions on the same box. It's very common. They just go into their own ORACLE_HOME based on the OFA guidelines

https://docs.oracle.com/cd/E11882_01/install.112/e49316/appendix_ofa.htm#HPDBI1374

Similarly, you can run a listener out of each home, or just a single one (typically that of the higher version).

If you're running GRID/clusterware, then it should be at the higher version level, but lower versions of the database can then be attached to it.

As always, consult the Upgrade guide for definitive information on the process

http://docs.oracle.com/database/122/UPGRD/toc.htm



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