(EMAILWIRE.COM, March 28, 2005 ) TORONTO, CANADA – DataMirror® today announced the final results of its offer dated February 11, 2005 to purchase for cancellation up to 2,000,000 common shares. The offer for the common shares expired at 5:00 p.m. (Toronto time) on March 21, 2005.

Based on final reports from CIBC Mellon Trust Company on the response to its offer to purchase common shares, the number of common shares deposited at or below the purchase price as at the expiration date of the offer for common shares was 3,113,239. The final proration factor that has been applied to common shares properly deposited is 0.641256. As a result, shareholders who deposited common shares at or below the purchase price of $10.00 per common share or pursuant to purchase price tenders will have approximately 64% of their common shares bought back at the purchase price, subject to adjustments for odd lots and to avoid the creation of fractional common shares and to avoid the creation of odd lots as a result of proration. As a result of this process, the actual number of common shares to be purchased for cancellation will be 2,002,039. Payment for common shares tendered and accepted for purchase will be made by March 29, 2005.

The common shares to be repurchased comprise approximately 19% of the outstanding common shares of the Company. After giving effect to the repurchase and cancellation, there will remain outstanding approximately 8,555,000 million common shares of the Company.

About DataMirror
DataMirror (NASDAQ: DMCX; TSX: DMC), a leading provider of real-time data integration, protection, audit and java database solutions, improves the integrity and reliability of information across all of the systems that create and store data. DataMirror’s flexible and affordable integration solutions allow customers to easily and continuously detect, translate, and communicate all information changes throughout the enterprise. DataMirror helps customers make better decisions by providing access to the continuous, accurate information they need to take timely action and move forward faster.

Over 2,000 companies have gained tangible business benefits from DataMirror software, including Debenhams, FedEx Ground, First American Bank, OshKosh B’Gosh, Priority Health, Tiffany & Co., and Union Pacific Railroad. DataMirror is headquartered in Markham, Canada and has offices around the globe. For more information, visit www.datamirror.com.

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"Safe Harbour" 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 harbour" 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: the difficulty of developing, marketing and selling new products successfully; variability of quarterly operating results; dependence upon 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 DataMirror'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. DataMirror disclaims and does not assume any obligation to update these forward-looking statements.

Copyright 2005 DataMirror Corporation. All rights reserved. DataMirror is a registered trademark of DataMirror Corporation. All other brand or product names are trademarks or registered trademarks of their respective companies.

Contacts:
Peter Cauley
Chief Financial Officer
DataMirror Corporation
905-415-0310 ext. 271
pcauley@datamirror.com

Tom Giantsopoulos
Corporate Communications
DataMirror Corporation
905-415-0310 ext. 153
tgiantsopoulos@datamirror.com

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