FPEV0411W `<V1>` PERIODIC EXCEPTION TASK DID NOT RESPOND TO DEACTIVATION REQUEST.

Explanation
 A periodic exception task continues monitoring
threshold exceptions although a user requested to stop periodic exception
processing. 
<V1> is the Db2 subsystem
ID.

User response
 Retry to deactivate periodic exception processing.
If the problem persists, terminate periodic exception processing.