Cannot Access Express Osa instance - ora-12541 tns no listener (Doc ID 437048.1)

Last updated on MARCH 09, 2017

Applies to:

On Demand Problem Resolution - Version: 11.5.8 to 11.5.10
This problem can occur on any platform.
OSA 6.3.4.0, Express 6.3.4.0

Symptoms

 When trying to login to OSA instance receiving the following error:  In stored procedure XWD_INIT: The following Express Server error occurred: ORA-12541: TNS:no  listener

Cause

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