Oracle : Ошибка ORA-12222

"TNS:no support is available for the protocol indicated"
*Cause: The protocol requested in the ADDRESS portion of the connect
descriptor identified through the net service name is not available.
If the supplied ADDRESS is typographically correct then support for
that protocol is not installed.
*Action: Install support for the protocol or correct typographical error,
as appropriate. Note: if the supplied address was derived from
resolving the net service name, check the address in the appropriate file
(TNSNAMES.ORA, LISTENER.ORA) or in the directory server.

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