Skip to Content
0
Former Member
Nov 29, 2011 at 09:22 PM

Issues with DB/CI and DI @ different levels

58 Views

SAP gurus - Hi

Recently migrated my AIX servers (from 5.3 to 6.1) for the CI and DI instances and ran into issues -

Here is the order of events..

1- First migrated the DI instance, applications started alright, active in SAP

2- Then I migrated the inactive node of the CI HACMP cluster - no impact to service

3- Then I did the fail-over from to migrate the other HACMP node, at this point after the cluster failover (the CI is also at AIX 6.1 now), the DI instance is not showing active in SAP GUI anymore, although the SAP is running on both CI and DI at the OS level.

4- We tried to stop/start just the DI, that didn't work

5- Then we stopped/started both DI and CI in the correct order (CI first then DI), still not good

6- Finally rebooted the DI server, started SAP after reboot and then it showed up

Luckily this was in the test environment, I have to progress the change to Production and I cannot imagine having to reboot the Prod DI instances, that is a big no no.

Does this ring a bell? anyone, anybody seen this before? or know what might have caused the app servers to disappear from SAP? anything we can do proactively to avoid this situation? or avoid reboot post-actively? 😊