Listener Fails to Start and Reports Error TNS-12542 Address Already in Use

(Doc ID 1107064.1)

Last updated on FEBRUARY 15, 2018

Applies to:

Oracle Net Services - Version to [Release 9.2 to 11.2]
Oracle Net Services - Version to [Release 12.1]
Oracle Net Services - Version to [Release 11.2]
Information in this document applies to any platform.


The listener fails to start and the following error stack is thrown at the Lsnrctl utility prompt:


Error: ORA-12542 / TNS-12542
Text: TNS:address already in use



This may be a new installation or the listener.ora file has been edited manually since the last listener restart.


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