Some sites in confluence crash and cannot be opened

[Deleted user]

Every now and then we come across Confluence Pages that fail to open with the following error.

org.springframework.transaction.TransactionSystemException: Could not commit Hibernate transaction; nested exception is net.sf.hibernate.TransactionException: Unable to commit against JDBC Connection
caused by: net.sf.hibernate.TransactionException: Unable to commit against JDBC Connection
caused by: java.sql.SQLException: Invalid state, the Connection object is closed.

Can anybody say what could be the issue here? Since we only have a starter license we cannot access Atlassian's usual support.

Thanks and Best Regards

Marius

[Nic Brough -Adaptavist-]

The database connection is not configured quite right.  Start at https://confluence.atlassian.com/jirakb/invalid-state-the-connection-object-is-closed-due-to-connection-closure-153748854.html