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ORA-12512 TNS:listner does not currently know of service requested in connect descriptor (11g)

Sami UllahNov 5 2014 — edited Nov 5 2014

I installed the oracle database 11g on windows 7 offline (wifi and LAN was disabled) successfully and also was connecting successfully with Form, Report builders and Toad with TNS names. After enabling LAN or Wifi when i connect is give ORA-12512 error, if i connect without giving database tns name (only username/password) it connects successfully and also after disabling the LAN or Wifi and restarting database work fine.

Thanks

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Locked on Dec 3 2014

Added on Nov 5 2014

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