Lsnrctl Status shows TNS-12541 "no Listener" after a few days on Linux 64 Bit but Listener is still running
(Doc ID 2251039.1)
Last updated on JANUARY 17, 2025
Applies to:
Oracle Net Services - Version 12.1.0.2 and laterGen 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
Oracle Cloud Infrastructure - Exadata Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 19.22.0.0.0 and later
Generic Linux
Symptoms
After a few days of starting the TNS Listener, running "lsnrctl status" does not work.
Initial start:
Connections are working through this listener and ps -ef |grep tnslsnr shows the listener is running.
The Listener cannot be stopped and the process itself has to be killed.
Changes
This may be a new installation on Linux (for example, Redhat 7) when an original installation on Redhat 5 was working without issues.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |