How to resolve ''Event Polling Stopped'' errors in Alarm Monitoring

The first thing you need to check is if there is sufficient free disc space where the database is installed. 

•If there is insufficient space, and the disk is small, perform a disk cleanup, including the temp folder.

•If there is insufficient space, and the AccessControl.mdf database file is very large, perform an archive from System Administration, if an archive was not performed recently.

•If there is insufficient space, and the AccessControl.ldf log file is very large, reach out to a DBA for assistance truncating the log file.

•If disk space is not an issue, verify the AccessControl database is configured for unrestricted growth. This can be done in SQL Server Management Studio by right-clicking on the AccessControl database and then selecting Properties > Files. Verify that the Autogrowth column is set for unrestricted growth on both the data file and the log file. 

 

If you verified that there is sufficient free disc space, and the errors are still occurring, then the Communication Server may be the issue.

Events to be written to the OnGuard database are buffered internally by the Communication Server. If the number of events received exceeds the number that can be written to the database, the events are queued and processed on the basis of first in, first out order.

If there are events queued by the Communication Server, and the Communication Server is subsequently shut down, the events will be written to the following files:

•LogEventThreadEvents.dat 

•LogEventThreadEventText.dat

 

On a computer running a 32-bit version of Windows, these files may be located either in the %ProgramFiles%\OnGuard directory, or the %WINDIR%\System32 directory.

On a computer running a 64-bit version of Windows, these files may be located either in the %ProgramFiles(x86)%\OnGuard directory, or the %WINDIR%\SysWOW64 directory.

When the Communication Server is restarted, events from the files above are reloaded, queued, and processed in first in, first out order.

See Article "How does the Communication Server process events to be written to the OnGuard database? " for additional information.