EXHIBIT 99


BMC SOFTWARE REITERATES PREVIOUSLY ESTIMATED REVENUE AND EPS RANGES FOR THE
FOURTH QUARTER OF FISCAL 2005

Company Provides Fiscal 2006 Revenue, EPS and Cash Flow from Operations Guidance
BMC Software to Announce Fourth Quarter Results on June 14, 2005


HOUSTON - (MAY 23, 2005) - BMC Software, Inc., [NYSE: BMC], a leader in
enterprise management solutions, today announced that it reiterates previously
estimated ranges for fourth quarter fiscal 2005 revenues and earnings per share.
Consistent with the ranges provided on April 11, 2005, BMC Software estimates
total revenues for the fourth quarter ended March 31, 2005 to be in the range of
$388 million to $400 million and earnings per share excluding special items to
be in the range of $0.08 to $0.12 per diluted common share. Fourth quarter
fiscal 2005 earnings per share on a GAAP basis are preliminarily estimated to be
in the range of a loss of $0.01 to earnings of $0.03 per diluted common share.
The difference between the earnings per share excluding special items and the
GAAP earnings per share is $0.09 per diluted common share, primarily related to
amortization of acquired technology and intangibles, goodwill impairment and
write-off of acquired research and development from two acquisitions in the
quarter.

Cash flows from operations were strong in fiscal 2005 and are preliminarily
estimated to be approximately $500 million, which compares to the previously
estimated range of $470 million to $500 million.

FISCAL 2006 GUIDANCE

BMC Software expects fiscal 2006 earnings per share excluding special items to
be in the range of $0.86 to $0.92 per diluted common share, which compares to
current analyst consensus estimates of $0.81. This represents an expected 35
percent to 45 percent growth in earnings per share excluding special items in
fiscal 2006. Fiscal 2006 estimates do not include an estimated $0.50 per share
of special items.

The Company expects fiscal 2006 revenues to be in the range of $1.48 billion to
$1.50 billion. BMC Software expects cash flow from operations for fiscal 2006 to
be over $500 million, net of approximately $50 million in cash outlays related
to the recently implemented restructuring.

The Company is comfortable with the current first quarter fiscal 2006 analyst
consensus estimates of revenues of $340 million and earnings per share excluding
special items of $0.13.

FOURTH QUARTER FISCAL 2005 EARNINGS RELEASE

BMC Software will report fourth quarter fiscal 2005 results concurrent with the
filing of its Annual Report on Form 10-K on June 14, 2005. This earnings release
date takes into account the extensive work required for completion of
Sarbanes-Oxley Section 404 compliance efforts, which is integrated with the
Company's financial audit. The later than expected earnings release date does
not impact the Company's confidence in its fourth quarter fiscal 2005 estimated
ranges for revenues, EPS and cash flow from operations nor any historical
financial results.

A conference call to discuss the Company's fourth quarter results is scheduled
for June 14, 2005 at 4:00 p.m. central time. Those interested in participating
may call (719) 457-2633 and use the passcode BMC Software. To access a replay of
the conference call, which will be available for one week, dial (719) 457-0820
and use the passcode BMC. A live webcast of the conference call will be
available on the Company's website at www.bmc.com/investors. A replay of the
webcast will be available within 24 hours and archived on the website for 90
days.

NON-GAAP FINANCIAL MEASURES

This press release includes the non-GAAP financial measures of historical and
prospective diluted earnings per share excluding special items. These special
items include: (i) amortization of acquired technology and intangibles, (ii)
acquired research and development, (iii) impairment of goodwill and (iv) amounts
related to exit activities. Items (i) to (iii) are excluded as they are non-cash
charges related to completed acquisitions. Item (iv) is excluded because amounts
associated with the exit activities are non-recurring and are not directly
related to the Company's ongoing operations. Reconciliations between the GAAP
measures and the non-GAAP measures are included in this press release.

BMC Software's management uses the non-GAAP results in its own evaluation of the
performance of the company. BMC Software's management also uses the non-GAAP
results for budgeting and on a quarterly basis for determining executive
compensation.

Although BMC Software's management finds its non-GAAP results useful in
evaluating the performance of its business, its reliance on this measure is
limited because items excluded from such measures often have a material impact
on the company's operating expenses, net earnings and diluted earnings per share
calculated in accordance with GAAP. Therefore, BMC Software's management
typically uses its non-GAAP results in conjunction with GAAP results to address
these limitations.

While GAAP results are more complete, the company provides investors this
supplemental measure because, with the reconciliation of non-GAAP to GAAP
financial information, it may provide additional insight into its financial
results. BMC Software believes that presenting the non-GAAP results provides
investors with an additional tool for evaluating the ongoing performance of its
business, as such results are not influenced by certain non-cash or
non-recurring expenses and are therefore useful to investors in helping them
understand the financial condition of BMC Software by focusing on the
performance of the Company's core operations. The non-GAAP financial measures
are presented by BMC Software to give investors further information about
historical and expected results and increase their ability to compare financial
information from period to period.

ABOUT BMC SOFTWARE

BMC Software, Inc. [NYSE:BMC], is a leading provider of enterprise management
solutions that empower companies to manage their IT infrastructure from a
business perspective. Delivering Business Service Management, BMC Software
solutions span enterprise systems, applications, databases and service
management. Founded in 1980, BMC Software has offices worldwide and fiscal 2004
revenues of more than $1.4 billion. For more information about BMC Software,
www.bmc.com

This news release contains both historical information and forward-looking
information. The preliminary financial results for the Company's March 2005
quarter and statements of plans, objectives, strategies and expectations for
future operations and results, identified by words such as "believe,"
"anticipate," "expect," "estimate" and "guidance" are forward-looking
statements. The preliminary estimates of revenues, earnings per share and cash
flow from operations contained in this press release are subject to change.
Numerous important factors affect BMC Software's operating results and could
cause BMC Software's actual results to differ materially from the forecasts and
estimates indicated by this press release or by any other forward-looking
statements made by, or on behalf of, BMC Software, and there can be no assurance
that future results will meet expectations, estimates or projections. These
factors include, but are not limited to, the following: 1) BMC Software's
revenues and earnings are subject to a number of factors, including the
significant percentage of quarterly sales typically closed at the end of each
quarter, that make estimation of operating results prior to the end of a quarter
extremely uncertain; 2) BMC Software's operating costs and expenses are
relatively fixed over the short term; 3) increased competition and pricing
pressures could adversely affect BMC Software's earnings; 4) BMC Software's
maintenance revenue could decline if maintenance renewal rates decline or if

license revenues do not grow; 5) new software products and product strategies
may not be timely introduced or successfully adopted; 6) BMC Software's
quarterly cash flow from operations is and has been volatile and is dependent
upon a number of factors described in BMC Software's filings with the SEC; 7)
BMC Software's effective tax rate is subject to quarterly fluctuation and any
change in such tax rate could affect the company's earnings; and 8) the
additional risks and important factors described in BMC Software's quarterly
reports on Form 10-Q and in its Annual Report on Form 10-K for the fiscal year
ended March 31, 2004 and other filings with the SEC. BMC Software undertakes no
obligation to update information contained in this release.

INVESTOR RELATIONS CONTACT:
Neil Yekell
(713) 918-4233
neil_yekell@bmc.com

MEDIA RELATIONS CONTACT:
Arch Currid
(713) 918-3236
arch_currid@bmc.com

BMC Software, the BMC Software logos, and all other BMC Software product or
service names are registered trademarks or trademarks of BMC Software, Inc. All
other trademarks or registered trademarks belong to their respective companies.
(C) 2005, BMC Software, Inc. All rights reserved.

          COPYRIGHT (c) 2005 BMC SOFTWARE, INC. | ALL RIGHTS RESERVED