The TAC Webapp is designed to do the modifications in the TAC DB in an "isolated way" (no conflicts between the different modifications) As the setting :
database.server.selectForUpdate.enabled=true
is useless for the TAC Webapp and is known to cause some issues , it is recommended to set it to false for the TAC :
database.server.selectForUpdate.enabled=false
Other operations might be required are
1. truncate temp, work folder under tomcat
2. restart Tac
3. Set the Task action on unavailable JobServer to "Reset" task instead of "Wait" indefinitely
