When listener does not know of service requested in connect (ORA-12514).

Introduction:

After setting up a taf service in one of  my rac environments i checked if the (local) listener that was configured for the database was showing the services as to be expected. Much to my surprise that  was not the case. So puzzled as i was ( after all this was not the first rac I build) I went on to a hunt to find what was going on. In this blog is my  share my steps / thoughts how i came to the happy end that of course was out there waiting for me.

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