evs_backup command sometimes fails with the following messages:
Postgres service is down, starting postgres
Failed to start postgres service. Please check backup.err for detailed errors
error has occurred. evs_backup will stop
pg_dump: [archiver (db)] connection to database "events_db" failed: FATAL: the database system is starting up
pg_dump: *** aborted because of error
The $RTDIR/bin/eva_db_backup.csh script needs the postgres process to be running, so it starts it it is not running.
Starting the database can take some time (several seconds).