Oracle : Ошибка ORA-12162

"TNS:net service name is incorrectly specified"
*Cause: The connect descriptor corresponding to the net service name in
TNSNAMES.ORA or in the directory server (Oracle Internet Directory) is
incorrectly specified.
*Action: If using local naming make sure there are no syntax errors in
the corresponding connect descriptor in the TNSNAMES.ORA file. If using
directory naming check the information provided through the administration
used for directory naming.

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