[ovirt-users] DataAccessResourceFailureException from one to to the next

After one day I'm not able to login to the ovirt-engine webinterface with the following error message: "org.springframework.dao.DataAccessResourceFailureException: Error retrieving database metadata; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.postgresql.util.PSQLException: This connection has been closed." Things I tried which didn't help: - engine: check if the database is up - eninge: reboot - hosts: reboot - engine: xfs_repair Any ideas? regards gregor