I am having this error on Call Manager, "Database communication error". I followed the instructions on cisco and fixed the issue and now it has happened again.
This twice in 2 days... I am rebooting the PUB which will fix it, but I need a permanent fix.
As if you have already done all those troubleshooting and didn't get rid of this, better open a TAC case. I faced the same issue earlier while changing the password and didn't follow the right procedures, but I hope you haven't done the same.
Same issue here - reboots repair the error temporarily but within a day or two we're unable to login to the Pub again. Database replication status shows 2/3/3/3/3.