Jira not starting any more

D_ Be_

Hello,
my instance is not starting any more after a power loss (see screenshot with error message attached), the last running backup is from 2021-01-23, so I better need to restore the current version. Is there any way to get it running again?
Greetings

Nic Brough -Adaptavist-

Lower down in the error message, there are a load of references that tell us that your system is using the embedded h2 database.

This thing is for demo/dev/test purposes only - throwaway instances that you don't mind losing and having to rebuild if needed, they're not fit for production because the h2 database can fail catastrophically without warning.

I would guess that this has happened here - power loss can cause a complete h2 failure quite easily.

Sometimes, you can rescue them, but the error you have here is not one I have seen rescued before.

So, yes, you probably should recover from the latest backup.  The easiest way to do this would be to install a new copy of Jira, of exactly the same version, get it running ok (to a point where the admin can log into an empty system), and then tell it to do a full import from the xml in the 2021-01-23 backup.

I would have a look in the <jira home>/export directory first, in case there are more recent xml backups in there.

Finally, when you set up the new instance, I'd plan to do it with a supported database - if you're importing from XML, that will do all the data migration for you automatically, and leave you with a stable system (if the power dies on a supported database, the worst case is a couple of bad writes into the database which won't break much, if anything)