LSNRCTL Commands Intermittently With Error "TNS-12537: TNS:connection Closed"
(Doc ID 2541572.1)
Last updated on JANUARY 28, 2020
Applies to:Oracle Net Services - Version 10.2.0.4 to 18.104.22.168 [Release 10.2 to 11.2]
Information in this document applies to any platform.
LSNRCTL status or services is intermittently failing to return a response and shows the following error stack:
Connecting to (ADDRESS=(PROTOCOL=TCP)(Host=hostname)(Port=1671))
TNS-12537: TNS:connection closed
TNS-12560: TNS:protocol adapter error
TNS-00507: Connection closed
There is no apparent pattern to this behavior. Sometimes the LSNRCTL utility will respond to a status command.
This may be a new installation or a recent implementation of TCP.VALIDNODE_CHECKING.
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