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ORA-12537 TNS connection refused
dear friends,
I have a strange behaviur when I try to connect to the database, maybe you can help me.
I have Oracle 11. When I try to connect from a client to the database DUC I am getting error ORA-12537 TNS connection refused.
On DUC I have the client's hostname introduced in sqlnet.ora file. After I reload the listener DUC the connection works. After a time the connection does not work anymore even if I did not made any changes to listener relevant files. A reload always fixes the error.
Can you please tell me what could be the reason for this and how can I solve this issue?
Kind regards,
Dalmi
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... is it "refused" or "closed"?
What do you see on listener's log file?
Pablo (Paul) Berzukov
Author of Understanding Database Administration available at amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.
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Is the listener crashing?
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