Hi Phani,
Looking at the schedule, it seems to be repeat every 24 hours. it should have worked as per the expectation, but i think there may be clock synchronization issue during the day light saving change. is your nimsoft/uim environment in the same time zone. Please go through the below check point to see if it's similar to your situation.
To ensure that maintenance schedules start and stop at the intended times, the system clocks on the
following servers must be synchronized:
UIM Server system (primary hub, this included the maintenance_mode probe)
Database server
nas server(s)
UMP server(s)
Out-of-synch clocks can result in erroneous or missing alarms. For example, suppose the clock on the
UMP server is 30 minutes ahead of the NAS server. You place your web server in a maintenance
schedule that goes from 9:00 to 11:00.
At 9:00, you take the web server offline for maintenance. Because the NAS server’s time is 8:30, it
does not suppress alarms at the anticipated time.
At 11:00, you bring the web server back online. However, because the NAS server’s time is 10:30,
it will suppress alarms for another 30 minutes.
Regards
Hitesh Sehgal