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DRAFT KB-XXXX "Inconsistent DBID on GW1" error thrown in checkengine script and engines fail to boot up with " file not found" error in db_**.log


After attempting to start the engines via the start-suite script, the checkengine script displays an error like this:

On examining the db_**.log for the relevant engine, the following error is seen:

YYYY-MM-DD HH:MM:SS [PO1] {ap39.kdb ,6713} () FATAL .a.db " file not found"

Both of the above symptoms must be present before proceeding to the following sections. If the file not found error is seen, please refer to the next section. If not, you can refer to the steps in KB-1211 to see if this applies to the issue you observe.


The migration directory present in <APPIAN_HOME>/server/*engine* directory is missing. This may be due to accidentally deleting it or moving it to a different location.


Re-install Appian and test the install/upgrade again.

Affected Versions

This article applies to Appian 17.2 and earlier.

Last Reviewed: January 2018