ORA-12541: TNS:no Listener when using UTL_HTTP (Doc ID 2198047.1)

Last updated on JULY 12, 2017

Applies to:

Oracle Net Services - Version 11.2.0.4 and later
Information in this document applies to any platform.

Symptoms

When connecting via the TNS Listener, and then running a basic UTL_HTTP query, the query fails with an ORA-12541 "no listener"
This is despite the fact that the listener is up and running on the Database Server and has no issues with SQL*Plus connections.

 

Cause

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