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ESM fails to process events due to server disconnect stop alert rule crashing the importer

Affected platforms

exacqVision ESM 3.7.6 or later

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Symptom

If a rule is created to display an alert when the server disconnected state stops (that is, the server reconnects), the ESM importer will crash when that alert rule fires. To confirm, check the following logs:

Open the log file logfile-importer and look for an entry like the following:
[23/Sep/2015 15:06:45] WARNING [importer:101] Importer processes died for following importer ids: [2]

Next, open the log file corresponding to the importer id, in this case logfile-Importer2. Look for the following error in the log file:

Exception: Error saving

 ‘DisconnectEvent’ object

If this error is found then the ESM importer has failed due to the disconnect stop rule.

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Workaround

Edit the rule to only trigger on a server disconnect state starting, or remove the rule.

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Resolution

Update to exacqVision ESM version 3.8.0.89234 or higher