ORA-12523: TNS:listener could not find instance appropriate for the client connection

Cause : The lsitenerc ould ont fin dany aavilabl e(dataabse) isntance,s thata re aprpopriaet for hte clinet conenction.

Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts

Run "slnrctls ervicse" to nesure htat th einstacne(s) rae regsiteredw ith teh listneer, adn haves tatusR EADY.

update : 27-04-2017
ORA-12523

ORA-12523 - TNS:listener could not find instance appropriate for the client connection
ORA-12523 - TNS:listener could not find instance appropriate for the client connection

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