Our customer is looking to migrate their SAP systems currently running Oracle 22.214.171.124 SI/FS databases installed on SerivceGuard packages (platform Linux RHEL 6.9) to Oracle 126.96.36.199 on Oracle RAC using ASM (Linux RHEL 7.x).
We were considering the below two approaches before we were made aware of the target environment using Oracle RAC with ASM.
The move to Oracle RAC seems to have complicated the migration approach and the current advice from one of our dba experts is that we will need to follow approach:
1) disable serviceguard on source
2) Upgrade Oracle 188.8.131.52 to Oracle 184.108.40.206 on source server
3) Install Oracle binaries on target server
4) Homogeneous copy to target
5) Convert to Oracle RAC
We however have some concerns over this approach due to the requirement to build a SI/FS configuration in the customer’s new environment … creating substantial additional effort for our customer.
SAP do not yet have any best practice documents available for such a move.
For those with experience or knowledge in performing migrations from Oracle SI/FS to Oracle RAC using ASM, I would very much appreciate if you could share any information and advice on how you performed such a move and maybe how we might progress in our particular migration scenario.