Returns pointers to local copies of the dump file header and
    the error log buffer together with the sizes of those data
    structures; optionally returns pointers and sizes for the crash
    error log entry and trap data (if any).

    Format

      void sda$get_header (DMP **dmp_header, uint32 *dmp_header_size,

      void **errlog_buf, uint32 *errlog_buf_size,__optional_params);