TNS-04012 or (EVENT=Failed to start listener process) when starting 11.2.0.x CMAN
(Doc ID 1334099.1)
Last updated on JANUARY 21, 2020
Applies to:Oracle Net Services - Version 18.104.22.168 to 22.214.171.124 [Release 11.2 to 12.1]
Information in this document applies to any platform.
When trying to startup newly installed 11g CMAN the following error occurs :
Welcome to CMCTL, type "help" for information.
CMCTL> admin cman
Current instance cman is already started
Connections refer to (address=(protocol=tcp)(host=x)(port=1630)).
The command completed successfully.
TNS-04012: Unable to start Oracle Connection Manager instance.
The cman Log file shows the following :
(LOG_RECORD=(TIMESTAMP=29-JUN-2011 16:01:25)(EVENT=Failed to start listener process)(REASON=)(OPN=65)(NS1=12560)(NS2=0)(NT1=530)(NT2=4294967295))
Installed 11g Client software to a new home with "Oracle Connection Manager" component only.
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