RAC - Connections Intermittently Fail With: ORA-12502: no CONNECT_DATA from client
(Doc ID 2550216.1)
Last updated on JULY 15, 2021
Applies to:Oracle Net Services - Version 188.8.131.52 and later
Information in this document applies to any platform.
Remote connections using SQL*Plus are intermittently failing with the following error:
ORA-12502: TNS:listener received no CONNECT_DATA from client
SQLPLUS username@<TNS _ALIAS>
SQL*Plus: Release 184.108.40.206.0 Production on Thu May 16 14:59:48 2019
Copyright (c) 1982, 2009, Oracle. All rights reserved.
ERROR: ORA-12502: no CONNECT_DATA from client
This is either a new implementation of RAC or some configuration changes have taken place.
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