DataMirror Announces New Transformation Server Customers; Growing Number of Companies Adopt DataMirror's Real-time Data Integration Software.

Business Editors

TORONTO--(BUSINESS WIRE)--Dec. 4, 2001

DataMirror (Nasdaq: DMCX; TSE: DMC), a leading provider of enterprise application integration and resiliency solutions, today announced its latest customers implementing DataMirror's award-winning Transformation Server(TM) software. Transformation Server enables companies to integrate data bi-directionally and in real-time across multiple computing platforms and databases to enable them to leverage their existing systems, save time and resources and boost the flow of vital data across the organization and beyond.

"The ability to effectively share corporate information is critical in today's economy. Leaner budgets and greater competition mean that more and more companies are looking for cost-effective ways to maximize their operational efficiency and increase the flow of information to better serve customers," said Stewart Ritchie, Vice President of Sales for DataMirror. "Transformation Servers' out-of-the-box integration with leading databases and XML enables businesses to ensure rapid implementation times without the need for costly consulting, allowing for increased cost savings and a maximum return on a minimal technology investment."

Leading companies now benefiting from DataMirror Transformation Server include:

- Cuno Inc. is a world leader in the design, manufacture, and marketing of a
comprehensive line of filtration products for the separation, clarification,
and purification of fluids and gases. The Company operates a total of eight
manufacturing facilities in the United States, Europe, Japan, Brazil, and
Australia, and has sales offices throughout the world.

- Express Computer Supply is one of the largest computer supply distributors in
the U.S.A. Express Computer Supply is a stocking distributor which ensures it
will ship customer orders within 24 hours.

- Fort Hill Natural Gas Authority (FHGNA) supplies customers with clean
burning, efficient natural gas. FHNGA serves the municipalities and outlying
areas of Oconee, Pickens and portions of Anderson Counties in South Carolina.

- InterMountain Health Care (IHC) is a nonprofit health care system based in
Salt Lake City, Utah that serves the medical and health care needs of Utah and
Idaho residents. IHC is internationally recognized as a pioneering organization
in raising standards of clinical excellence.

- Space and Naval Warfare Systems Command (SPAWAR) provides information
technology and space systems for U.S. Navy and Defense Department activities
while planning and designing for the future. SPAWAR has over 8,000 government
and military employees and receives over $4.5 billion in fiscal resources from
all sources. SPAWAR works in partnership with NAVSEA, NAVAIR and industry to
provide the U.S. military with cutting edge, integrated C4ISR (command,
control, communications, computers intelligence, surveillance and
reconnaissance), IT and space systems for the 21st century.

- Sungard is a global leader in integrated IT solutions and eProcessing for
financial services. SunGard is also the pioneer and a leading provider of
high-availability infrastructure for business continuity. With annual revenues
in excess of $1 billion, SunGard serves more than 20,000 clients in over 50
countries, including 47 of the world's 50 largest financial services
institutions.

- Tarrent Apparel Group is a leading provider of men's, women's and children's
casual, private label apparel. Founded in 1985, the Company has strong
relationships with specialty retail, mass merchants and national department
stores including Abercrombie and Fitch, The Limited, J.C. Penny, K-Mart, Sears,
Target, Mervyn's, and Walmart. In addition, the Company produces finished
garments for several international designer brands.

- Trim Masters Inc. is a leading supplier of automotive interior trim. The
Company has eleven locations in five states and two foreign countries. With
total employment of over 3,000 employees. Trim Master's annual sales are in
excess of $600 million dollars per year.

About Transformation Server

DataMirror Transformation Server transforms the experience of doing business by delivering real-time data flows to the people who need it. Transformation Server technology keeps data flowing from one end of the enterprise to the other and helps people work faster and smarter now. It lets users capture, transform and flow their data in real-time between DB2 UDB, Microsoft SQL Server, Oracle, Sybase and XML across UNIX, Linux, Microsoft Window NT/2000/XP, OS/400, OS/390 and z/OS. Because Transformation Server is easy to implement and requires no programming changes to applications and databases, customers can realize a rapid return on their software investment. Transformation Server's out-of-the-box support for leading databases make it ideal for a range of applications including EAI, e-Business, business intelligence, customer relationship management and a host of other distributed data applications.

About DataMirror Corporation

DataMirror (Nasdaq: DMCX; TSE: DMC) delivers solutions that let customers integrate data across their enterprises. DataMirror's comprehensive family of products unlocks the experience of now(TM) by providing advanced real-time capture, transform and flow (CTF) technology that gives customers the instant data access, integration and availability they demand today across all computers in their business.

Over 1,500 companies use DataMirror to integrate their data. Real-time data drives all business. DataMirror is headquartered in Toronto, Canada, and has offices worldwide. DataMirror has been ranked in the Deloitte and Touche Fast 500 as one of the fastest growing technology companies in North America. For more information, call 1-800-362-5955 or visit the DataMirror web site at www.datamirror.com.

"Safe Harbor" Statement under the United States Private Securities Litigation Reform Act of 1995: Forward-looking statements in this press release, including statements regarding DataMirror Corporation's business which are not historical facts, are made pursuant to the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements include statements of plans, objectives, strategies and expectations. The words "anticipate", "believe", "estimate" and "expect" and similar expressions are intended to identify forward-looking statements. Numerous important factors affect DataMirror's operating results and could cause DataMirror's actual results to differ materially from the results indicated by this press release or by any forward-looking statements made by, or on behalf of, DataMirror, 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: variability of quarterly operating results; dependence upon on the continued growth and success of DataMirror's software products; competition; rapid technological change and new product introductions; dependence upon continued growth in the database and enterprise data integration markets; dependence upon relationships with complementary vendors and distribution channels; the ability to recruit and retain key personnel; risks of international operations, including currency exchange rate fluctuations and global economic conditions; possible software errors or defects; possible infringement claims by third parties; and other factors discussed in the Company's Annual Information Form and other periodic filings with the United States Securities and Exchange Commission and other regulatory authorities. Should one or more of these risks or uncertainties materialize, or should assumptions underlying the forward-looking statements prove incorrect, actual results may vary materially from those indicated in any forward-looking statements. The Company disclaims and does not assume any obligation to update these forward-looking statements.

Copyright 2001 DataMirror Corporation. All rights reserved. DataMirror, Transformation Server and The experience of now are trademarks or registered trademarks of DataMirror Corporation. All other brand or product names are trademarks or registered trademarks of their respective companies.