Hello All,
I am using database 12.2.0.1 with single node RAC on primary and standby. No patch has been applied yet.
I am planning to patch the databases with latest jan'19 release with minimal downtime.
Will patch the standby first then switch it over and wait for sometime and then on primary.
My concern here is if I patch the Standby first and then there will be mismatch in patch applied between primary and SBY and then if I switchover will the archives gets transfered from primary to standby.
In simple manner if there are differences in patches between primary and standby, will be there be any impact on the dataguard setup or it will work as it shoud?
Regards,
Ronak.