WAS fix pack/APAR upgrade | Maintain and update Web servers
WebSphere Commerce fix pack/APAR upgrade
When installing WebSphere Commerce fixes, follow instructions in the fix pack installation guide or APAR readme.
You only need to apply the fixes on ONE WebSphere Commerce node-the one where you created the WebSphere Commerce instance.
When installing a WebSphere Commerce APAR that requires no update to the database, you do not need to stop any servers.
However, when installing the WebSphere Commerce fix pack, a database update is also required. You need to stop the application servers to ensure data integrity.