Can you try restarting the Subcriber, as the Publisher is primary and if you are not experiencing any call issues.
This seems to be Split brain mode which refers to a state in which each database server does not know the high availability (HA) role of its redundant peer, and cannot determine which server currently has the primary HA role. In split brain mode, data modifications may have been made on either node, and those changes may not be replicated to the peer. Also, neither or both nodes may be functioning in the primary HA role. Split brain mode occurs when there is a temporary failure of the network connections between the two database servers, for example, due to one of the following occurrences:
• Restart of either database server during synchronization.
• Physical disconnection of the Ethernet cables from a database server.
• Loss of power to one or both database servers.
http://www.cisco.com/c/en/us/td/docs/telepresence/tx/exchange_system/1_0/install_admin/book/b_install_admin/split_brain_recovery.pdf
refer below posts with similar issues and resolutions.
https://supportforums.cisco.com/discussion/11051396/cisco-unity-connection-cluster-issue
https://supportforums.cisco.com/discussion/12738316/unity-connection-cluster-issue
http://www.cisco.com/c/en/us/support/docs/unified-communications/unity-connection/116683-problemsolution-product-00.html
regards,
-Do rate helpful posts.
