Before your OES11 SP2 servers are patched, ensure that you complete the following steps.
If you plan to schedule immediate patching in section Assigning the Bundles and Scheduling the Patching, perform the steps now.
If you plan to schedule the patch to happen later, you can perform the steps later. Ensure that they are completed before the patching process begins.
Ensure that there are no Mozilla applications running on the OES11 SP2 servers you are patching.
On any servers that have the ZENworks Agent installed for the first time, check whether the SLES 11 SP3 and OES11 SP2 installation sources are listed in YaST Control Center> Installation Source. If the sources are not listed, add them back before starting the upgrade.