Oracle : Ошибка ORA-12538


"TNS:no such protocol adapter"
*Cause: The protocol adapter requested (by way of the "(PROTOCOL=..)"
keyword-value pair in a TNS address) is unknown. If the supplied address
is typographically correct then the protocol adapter is not installed.
*Action: Install the protocol adapter or correct typographically error,
as appropriate. Note: if the supplied address was derived from
resolving the service name, check the address in the appropriate file
(TNSNAMES.ORA, LISTENER.ORA or SQLNET.ORA).

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