You have too many errors in your logs. Seriously, it has a cluster of issues it seems. Isolate the issue, by starting from clean exilemod, then start adding exile overrides (changed exile code sqfs) you use. One by one.
Only then start adding addons for AI,zombies, Vehicles,etc. One by one.
The moment you will be able to start the server, you will identify which one is causing it. Isolate it and check logs again to see what error it spits out. AND ONLY THEN you will know what is there to fix and what solution to look for.
From rpts you can see that DB is actually working and somewhat exile connected to it. So its a completely different issue from what you initially stated about database and "CallExtension 'extDB2' could not be found".
Just go line after line (starting from Starting mission) in your RPT logs and look for code errors debug messages.