Micromuse Announces Availability of World's Largest Known Online SNMP MIB DatabaseOne-Stop Shopping - Users drill down on the a

    Industry's Foremost Centralized Configuration Repository Offers
 'One-Stop Shopping' for MIBs, and Auto-Generation of Rules Files for
                   Netcool(R) Customers and Partners

   Micromuse Inc. (Nasdaq: MUSE), the leading provider of
ultra-scalable, realtime business and service assurance software,
today announced the availability of the Netcool(R) MIB database, the
world's largest known online SNMP MIB repository. With more than
12,000 MIBs, built-in rules files generation for Netcool Solutions(TM)
and a straightforward shopping-cart user interface, the MIB database
significantly cuts the time, technical knowledge, and guesswork
required to configure Netcool to facilitate the monitoring of
SNMP-manageable devices by the Netcool suite.
   Growing daily, the MIB database is the largest known repository of
SNMP MIBs available on the Internet, but its functionality goes far
beyond that. The database virtually eliminates the time-consuming task
of combing the Internet for needed MIBs and converting them into a
usable format. Further, it will soon provide a way to match MIBs with
hardware and applications that support them. This means that a
non-technical user will simply select the pertinent hardware device or
application to gather the appropriate MIBs--in a shopping cart--for
downloading in a choice of formats. Formats currently available for
download include original MIB text, Netcool rulesfiles, html, csv,
plain text, or data files suitable for using with other Netcool tools.
   "We've used this tool again and again since October," stated Kenn
Neeley, Sr. Software Engineer, Mpower Communications. "Wow, let me
just say that this is an excellent resource and is a huge time saver.
It helps us get devices configured without the guesswork, testing or
tedious hunting down of elusive MIBs on the Internet. Nothing is a
more frustrating than having to post a notice on an online forum for a
seldom-used but critical MIB. Instead, we just click on a MIB, sending
it to a shopping cart for free download. It's fun."
   In addition, the database provides a SOAP interface for seamless
integration with applications. This means that an application which
uses data contained in a MIB can attach to the database and query it
for MIB or configuration information with little or no knowledge or
effort on the part of the user. A number of Micromuse applications
currently make use of this seamless integration. As an added security
bonus, a user may choose to upload MIBs to the database and specify
that only users from a specific company have access to them, providing
a way for customers and partners to auto-generate rules files for MIBs
they wish to keep private.
   "This unique database will provide the user with pre-defined
configuration files created by human intelligence where they are
available," stated Victor Havard, Micromuse's VP of Solutions Research
and Global Advanced Technology Team, "but if not available, the MIB
database will automatically deduce the basic information needed and
generate perfectly formatted rules or configuration files."
   This saving in time and effort enables faster configuration,
deployment, and ROI. And because the user needn't have in-depth SNMP
or MIB tree knowledge, even administrators with less experience can
get their applications up and running in a short time.
   The database's 12,000 MIBs represent well over 1.2 million
objects. Widely acclaimed by the Micromuse customer base since its
release last October, the MIB database is available to any Micromuse
partner or customer with a valid support contract.
   "We feel this is a significant development for the whole
industry," stated Craig Farrell, Micromuse CTO. "Until now, a customer
or partner setting up network devices for use with network management
applications would need a list of the MIBs required for their specific
devices--usually, but not always, provided by the vendor. Then someone
with in-depth SNMP and MIB tree knowledge would have to collect the
MIBs and write and test the rules files required. This could take a
month or more. But accessing the MIB database and collecting the
appropriate MIBs in a shopping cart literally takes five minutes."

   About Netcool

   Micromuse's Netcool(R) software solutions provide businesses with
the assurance that their applications and services are up and
operating. By allowing our customers to see what's happening
throughout the infrastructure in realtime, Netcool applications enable
them to respond to problems before revenue-supporting services are
affected.

   Netcool applications install out-of-the-box, deploy rapidly and
scale to the largest environments. Micromuse's flagship,
Netcool/OMNIbus(TM) application, includes a library of off-the-shelf
software modules that allow our customers to collect and consolidate
information from more than 1,000 environments spanning applications,
systems, voice and IP, cable/broadband, switches and routers, and
enterprise management systems.

   About Micromuse

   Micromuse Inc. (Nasdaq: MUSE) is the leading provider of
ultra-scalable, realtime business and service assurance software
solutions. The Netcool(R) software suite provides organizations with
the assurance that their IT systems are supporting and driving profits
24 hours a day. Unlike traditional infrastructure management systems,
Netcool solutions provide realtime end-to-end visibility and accurate
troubleshooting from a business perspective. Such business
intelligence allows organizations to respond to problems quickly,
streamline workflow processes and improve business uptime. Micromuse
customers include BT, Cable & Wireless, Deutsche Telekom, EarthLink,
ITC DeltaCom, JPMorgan Chase, MCI, T-Mobile, and Verizon. Headquarters
are located at 650 Townsend Street, San Francisco, Calif. 94103; (415)
568-9800. The Web site is at www.micromuse.com.

   Micromuse and Netcool are registered trademarks of Micromuse Ltd.
All other trademarks and registered trademarks in this document are
the properties of their respective owners. Any statements contained in
this press release that do not describe historical facts may
constitute forward-looking statements as that term is defined in the
Private Securities Litigation Reform Act of 1995. Any forward-looking
statements contained herein are based on current expectations, but are
subject to a number of risks and uncertainties.

   The factors that could cause actual future results to differ
materially from the forward-looking statements include the following:
fluctuations in customer demand, the Company's ability to manage its
growth (including the ability to hire sufficient sales and technical
personnel), the risks associated with the expansion of the Company's
distribution channels, the risk of new product introductions and
customer acceptance of new products; the rapid technological change
which characterizes the Company's markets, the risks associated with
competition, the risks associated with international sales as the
Company expands its markets, and the ability of the Company to compete
successfully in the future, as well as other risks identified in the
Company's Securities and Exchange Commission Filings, including but
not limited to those appearing under the caption "Risk Factors" in the
Company's most recent Quarterly Reports on Form 10-Q and on Form 10-K
on file with the Securities and Exchange Commission and available on
the Company's Web site.