Query on interoperability patches from 11.2.0.4 to 19C

[prabhunoule]

Hi Erman,
We are planning to upgrade our database from 11.2.0.4 to 19c in production this Saturday, following the document 2580629.1. Our EBS is R12.1.3 and as given in the document section interoperability patches. Can we apply these interoperability patches prior to 2 days ahead of downtime? Will this impact our application in anyways?

Could you please confirm this query?


Best Regards,
Prabhu Noule

[ErmanArslansOracleBlog]

Yes you can but you need to apply them to your TEST system first, and then carefully test the system.. Only after that you can apply them to PROD.. If you don't test them, it will bring you risks.. There are big patches (AD, TXK) there.. So you just can't apply them to PROD before testing them in TEST. You need to test your customizations and everything..