Error: Bad input object string - o_host field not found (23853)

event_log shows the following error:
Error: Bad input object string - o_host field not found

1. Message generated from a failed sp_ctrl connection, possibly issued from a monitoring script or cron job.
2.Message generated from a timed out sp_ctrl connection when attempting to run Compare
3. A job or other software running on the same port as sp_cop. In this case data will not be replicating.

If the cause is item 1. or 2., then this message can be safely ignored as there is no direct impact to replication.

If the cause is item 3, thenpleasedo the following:

Shut down sp_cop on source and target
Run ps -ef | grep sp_ to make sure there are no leftover processes, kill the leftover processes if necessary
Check the port on which sp_cop is running and make sure that it is completely free and not in use by any application. It is recommended to involve the network admin to help check the port.
Start shareplex.

Another option would be to shutdown shareplex and restart it on a different port.

Ifchoosingthe latter work around thenfirst check that the new port is currently free. It is recommended to involve the network admin to help check the port.