Sigma - Alarm Manager Will Not Run

[Product_Support]

Issue

After restarting Sigma, the Alarm Manager fails to start.

Product Line

Satchwell BAS & Sigma

Environment

Sigma release 4.04

Cause

In Sigma release 4.04, the archiving process may occasionally fail. As a result, the AlarmsLog.rec file can grow excessively large—sometimes exceeding 2 GB—which prevents the Alarm Manager from running properly.

Resolution

To resolve this issue, follow these steps:

1. Stop both the Sigma Client and Sigma Server.
2. Open Windows Explorer and navigate to the following directory:
   C:\Sigma\Data
3. Locate the file named AlarmsLog.rec.
4. Perform one of the following actions:
   • Rename the file (e.g., AlarmsLog_old.rec)
     OR
   • Delete the file (if no longer needed).
5. Restart the Sigma Server and Client.

Note: A new AlarmsLog.rec file will be automatically created when the next alarm is received by the server.

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Alternative Solution

Consider upgrading to the latest release of Sigma, which includes improvements to the archiving process and prevents this issue from occurring.