CUCM IP change causes "Database Connection Error" - Nodes defined by hostname

[Ess Emque]

Hello guys,

I am having a weird issues with CUCM 11.5.1(SU2). This is MCS to UCS migration from v8.6. My method is:

- Create UCS VM v 8.6

- Backup MCS v 8.6

- Restore backup to UCS v 8.6

- Upgrade to  11.5

- Change GUI to be defined by hostname

- Add DNS

- Change CUCM hostname

- Change CUCM IP address

All is fine, and I could successfully change the hostname, reboot and login to the CUCM. At the very final step, now when I change the IP, I can no longer log into CUCM. I get "Database Connection Error" on the ccmadmin page. 

I have seen this issue before when the System > Server does not match what is on CLI, but in this case the hostname is correct and the server is defined by hostname under System > Server, but still I cannot change the IP without this error. When I change back to the original IP on CLI, login works correctly.

Is it something getting stuck somewhere?

Thanks for all your assistance.

Ess

[Manish Gogna]

Hi Ess,

Please check the following doc for this specific issue, if the issue persists i would recommend engaging TAC to see if the entries in the database are being updated correctly

http://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-communications-manager-version-60/111040-dce-cucm-error.html

HTH

Manish