How to Diagnose Slow TNS Listener / Connection Performance
Last updated on FEBRUARY 14, 2017
Applies to:Oracle Net Services - Version 184.108.40.206 to 220.127.116.11 [Release 9.2 to 11.2]
Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124 [Release 11.2]
Information in this document applies to any platform.
Connections to database are slow or intermittently fail
TNS listener performance is slow
Versions 9.2 onwards
How to diagnose slow TNS listener issues or slow connections. Often ORA-12541 and ORA-12535 errors can be due to stressed or busy TNS listener.
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