A formal parameter for the SQLCA (see the Oracle Rdb SQL
    Reference Manual for more information on the SQLCA). The calling
    program module must declare a record that corresponds to the
    structure of the SQLCA and specify that record declaration as the
    calling parameter for the SQLCA formal parameter.

    Specifying SQLCA as a formal parameter is an alternative to
    specifying SQLCODE. Using SQLCA instead of SQLCODE lets the
    calling program module take advantage of the information SQL puts
    in the third element of the SQLERRD array in the SQLCA. Future
    versions of SQL may use the SQLCA for additional information.