How to fix the Oracle error ORA-28575: unable to open RPC connection to external procedure agent?

In this post, you’ll learn more about the Oracle ErrorORA-28575: unable to open RPC connection to external procedure agent with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-28575: unable to open RPC connection to external procedure agent

Reason for the Error ORA-28575: unable to open RPC connection to external procedure agent

Initialization of a network connection to the extproc agent did not succeed. This problem can be caused by network problems, incorrect listener configuration, or incorrect transfer code.

How to fix the Error ORA-28575: unable to open RPC connection to external procedure agent ?

You can fix this error in Oracle by following the below steps

Check listener configuration in LISTENER.ORA and TNSNAMES.ORA, or check Oracle Names Server.