Troubleshooting Guide for TNS-12518 TNS listener could not hand off client connection
(Doc ID 550859.1)
Last updated on AUGUST 04, 2018
Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124 [Release 11.2] Oracle Net Services - Version 10.1.0.5 to 126.96.36.199 [Release 10.1 to 12.1] Oracle Database - Enterprise Edition - Version 188.8.131.52 to 184.108.40.206 [Release 12.1] Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 12.2] Information in this document applies to any platform.
This article discusses how to troubleshoot the ORA-12518/TNS-12518 listener errors.
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