ORA-28511: lost RPC connection to heterogeneous remote agent using SID=string
Cause: A fatal error occurred in one of the following places: -- the connection between the ORACLE server and the agent -- the heterogeneous services remote agent itself -- the connection to the non-Oracle system This error occurred after communication had been established successfully
Action: Check for network problems and remote host crashes. The problem is probably in the agent software. If so, contact a customer support representative of the agent vendor
https://support.oracle.com/
http://www.oracle.com/