Zero downtime WAS and CPE Fix Pack installations
Is there procedure to apply WAS and CPE Fix Packs with zero downtimes?
The process is similar to CPE zero downtime procedure. With WAS ND, you will need to first the upgrade the DMGR. This is critical first step and after the Fix pack is completed.
While the DMGR is down and the FP installation is taking place, the nodes will still be operational. Once you have completed applying the FP on the DMGR and have restarted, you can then need to bring ONE node down one at time, apply the FP and then restart for the new version to be available and on to the next node.
For CPE zero downtime in a clustered configuration, refer to http://www-01.ibm.com/support/docview.wss?uid=swg21960007
For CPE in a farm, you will bring ONE node down at a time and apply the Fix Pack and redeploy and on to the next node one the node is up.
Note: Zero downtime FP procedures should be done in short period ie.. hours and not be done in a span of days to avoid mixed patched systems
This is only a test