Last updated on JULY 26, 2017
Applies to:Oracle Net Services - Version 10.1.0.2.0 to 22.214.171.124 [Release 10.1 to 12.1]
Oracle Net Services - Version 126.96.36.199 to 188.8.131.52 [Release 12.1]
Oracle Database - Enterprise Edition - Version 184.108.40.206 to 220.127.116.11 [Release 11.2]
Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124 [Release 12.1]
Information in this document applies to any platform.
***Checked for relevance on 11-APR-2017***
The issue documented here is limited to the version 10g or higher listener or lsnrctl utility.
When using a 10g listener or higher, it is possible that the error TNS-1189 "The listener could not authenticate the user" may occur intermittently (or very frequently) while performing listener operations from within the same LSNRCTL session. For example:
LSNRCTL> set trc_level 16
The listener.ora file may have been edited recently or this is a new installation.
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