Oracle : Ошибка ORA-28511

"lost RPC connection to heterogeneous remote agent using SID=%s"
*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
*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.

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