EXHIBIT 32.2

                                CERTIFICATION OF
                             CHIEF FINANCIAL OFFICER
                              OF BMC SOFTWARE, INC.
                       PURSUANT TO 18 U.S.C. Section 1350


         Based on my knowledge, I, John W. Cox, Chief Financial Officer of BMC
Software, Inc. (the "Company"), hereby certify that the accompanying report on
Form 10-Q for the period ending September 30, 2003 and filed with the Securities
and Exchange Commission on the date hereof pursuant to Section 13(a) of the
Securities Exchange Act of 1934 (the "Report") by the Company fully complies
with the requirements of that section.

         Based on my knowledge, I further certify that the information contained
in the Report fairly presents, in all material respects, the financial condition
and results of operations of the Company.




                                                    /s/ JOHN W. COX
                                                    ----------------------------
                                                    John W. Cox
                                                    November 13, 2003