Home » Server Options » RAC & Failsafe » Can 32-bit Oracle 11G be used with 64-bit Oracle 18c/19c RAC? (32-bit Oracle 11GR2 / 64-bit Oracle 18c/19c RAC Red Hat Enterprise Linux 7.7)
Can 32-bit Oracle 11G be used with 64-bit Oracle 18c/19c RAC? [message #678792] Mon, 13 January 2020 17:25 Go to previous message
Messages: 1
Registered: January 2020
Junior Member
A weird one...

A vendor has come to us with a mandated "upgrade" requirement for a mix of their products and tools. We used to have everything 64-bit on System P/AIX. Now they say the "upgrade" requires Oracle 11GR2 (11.2.04) 32-bit - because of a component they are built on for Linux - on Red Hat Enterprise Linux 7.7 64-bit. For the other packages in the same space with the same vendor suite we have RHEL 7.7 with 18c RAC and we planning to update this on the next "upgrade". On an old version of the package we ran down level 64-bit Oracle 11G DBs on 12c RAC and this was fine.

So, can we run 32-bit Oracle 11GR2 on a 64-bit 18c or 19c RAC on RHEL7.7? I know we will have an interesting time getting the OS requirements for 11G and it is out of support - and extended support soon - but we don't have a choice. Having bits of their components 32-bit on 32-bit Oracle DB on a 64-bit OS on a different box with old 32-bit RAC would make things even more "interesting"...
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