Message Oracle SQL-02121 - Invalid host name

ERRORInvalid host name
CAUSEThe host name passed into a SQLFCN call was not used in a previous call to SQLRCN.
ACTIONUse the same identifier used in the corresponding SQLRCN call. *Note: This error *msg* is never actually used. The error *number* is used, given as the return value of sqlfcn if this error occurs.