Our main disaster recovery plan is to restore our production system back onto out test system. Full OS restore, full DB restore. We are looking to see if there are any other quicker alternatives. We want to know if it is possible to only have to restore the database by setting up the equivalent /usr/sap/PRD etc. directories on the test system in advance. I recognise that oraPRD and PRDadm accounts also need to be set-up and some of the profile files need to be created specifically for PRD. Would this work ? We are running on Unix.
=== On your TST system, install both instances (TST and PRD). When this is done, you can delete the PRD database on your TST system...
If you ever come in a disaster recovery:
you simply stop your TST instance,
delete the database,
rename /oracle/TST to /oracle/PRD
restore your PRD tapes
Read the homogeneous system guide for subsequent steps, do all steps that require a hostname change.
Also make sure that all your SAPLOGONs have entries to this PRD-DRP instance.
So I installed on the test-box also a scond instance (with the same names (disk-drives, directories, ...) - it's a W2003-system.
Then -in case of disaster recovery- we only have to restore the last online-backup , apply redologs (it's an Oracle-Databse), recover the databse - thats rather all.
but still there are some subsequent activities - adapt opoeration modes, TMS, ... (like after every system-refresh PROD > TEST).
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