Database: JIRA couldn't connect to your database

[help_Jira]

I Installed two Jira instances in my pc. I am using H2 database for both instances, Once instance is working properly and the other having database connection issue. 

i checked the db.config file it is looking correct. so how to solve the problem??

[Nic Brough -Adaptavist-]

What errors are you seeing in the logs?

With h2 databases, the most likely culprit is that the database has failed, probably catastrophically, but we'll need to see the errors connecting in the logs (they're usually not direct, they won't say "it's corrupt", but give you more detailed errors that we can work out the actual problem from)