Troubleshooting Guide for ORA-12541 TNS: No Listener
(Doc ID 2059450.1)
Last updated on JANUARY 16, 2025
Applies to:
Oracle Net Services - Version 10.2.0.4 to 19.5.0.0.0 [Release 10.2 to 19]Oracle Database - Enterprise Edition - Version 10.2.0.4 to 18.5.0.0.0 [Release 10.2 to 18]
Oracle Cloud Infrastructure - Exadata Cloud Service - Version N/A and later
Gen 2 Exadata Cloud at Customer - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Information in this document applies to any platform.
This document contains instructions for troubleshooting the ORA-12541 TNS: No listener error. It does not cover "failure to start" listener issues.
Purpose
This document has been created to aid in troubleshooting the ORA-12541 TNS: No Listener error. Specifically when that error has been thrown at a remote client.
Troubleshooting Steps
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In this Document
| Purpose |
| Troubleshooting Steps |