Connection is suspended when the RMS heartbeat is used with Replication Server 12.6.
The RMS heartbeat process uses the Replication Server rs_ticket feature. This feature is only supported by Replication Server version 12.6 and later. However, Replication Server 12.6, unlike Replication Server 15.0, sends rs_ticket transactions to versions of the Replication Server earlier than 12.6, and this causes the connection suspensions.
Do not set up a heartbeat process if there are Replication Servers between the primary and replicate databases that are less then version 12.6.
To restart the connection, remove all rs_ticket command from the connection’s queue.