2019-06-25 21:52:43 [Root]system-critical-00554: SCAN-MGR: Check AV pattern file failed with error code: test load db fail on worker load db failure.
When the AV database is updated, a temporary directory is populated. The temporary directory includes a test DB. The test DB is compared to the worker DB to determine what needs to be updated. This message indicates that the comparison and loading of files between the test and worker DBs failed.
Can you please check from the events if you can see that the DB is updated successfully post 2019-06-25 21:52:43. You must see a message similar to "system notif 00554 SCAN-MGR: New AV pattern file has been updated. Version: 12/20/2018 06:29 GMT, virus records: 66633; size: 8046379 bytes."
Otherwise suggest to update the DB manually by following the method in the below mentioned KB.
The existing DB and the one downloaded will be different. The issue may have occurred either while comparing the DB’s or while loading the files. When the AV database is updated, a temporary directory is populated. The temporary directory includes a test DB. The test DB is compared to the worker DB to determine what needs to be updated.
If you are seeing the issue reptitively then the resolution shared the in the KB that pradkm shared should do the trick:
Turn off the auto update in the AV and unlink the avp.set file.
To unlink this file, run the exec vfs unlink flash :/kav_db/avp.set command.
Reboot the firewall.
After the reboot, try to manually update the AV.
After this is done, you can turn on auto update.
The F/W might have not experienced the same error again while performing an auto-update of AV pattern, hence you saw the log one time only.
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