ORA-28511: lost RPC connection to heterogeneous remote agent

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A client has been seeing this error when holding sessions open over HS for lengthy periods of time (greater than an hour or so).

Some workarounds that have worked are:

  • when possible, issue, alter session close database link, and re-open it for subsequent queries


  • Set INBOUND_CONNECT_TIMEOUT_<listener_name>=0 in listener.ora

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