End users cannot log on to OM Web Viewer. The Dispatch and OLVO tasks are up and running. We have recycled CCITCP and TOMCAT without a change. When trying to log on to OM Web Viewer end users are receiving the error: CA DRAS Server is not available for the security check function. Contact your System Administrator.
DRAS being hung caused the problem. Recycling the task resolved the immediate problem.
RCA revealed the hang occurred because a user was in the middle of a data request when Dispatch was stopped for a scheduled maintenance job. This is an uncommon occurrence as such a request normally takes less than 1 second. Recommendations to prevent a recurrence:
- Let the users know that you are automatically stopping Dispatch to prevent them having an active request at that time.
- Always bring down DRAS first (before Dispatch is stopped). DRAS can then be restarted at any point after Dispatch is brought down.