Use the Process Admin Console to deactivate and, if necessary, stop snapshots that are installed on a process server. All installed snapshots except the default version can be deactivated. However, you can stop only those snapshots that contain Advanced Integration Services (such as SCA modules or BPEL processes).
Deactivating a snapshot allows all existing business process definition process instances to complete, but no new process instances can be started.
Stopping a process application snapshot stops the associated business level application (BLA). Use the WebSphere Application Server administrative console to verify that the BLA is in the stopped state.
In order to deactivate a default version of the snapshot, first designate another snapshot as the default version. (If you have only one version installed on the server, you need to create and install another snapshot and then designate that as the default version.) After the snapshot is no longer the default version, you can deactivate it.