DataMirror Forms Strategic Alliance with Treehouse Software

Alliance Delivers Data Integration, Data Auditing, and Business Intelligence Solutions for ADABAS Market

SANTA CLARA, Calif., – (September 28, 2005) - DataMirror® (Nasdaq: DMCX; TSX: DMC) today announced an alliance with Treehouse Software, Inc. (TSI), a Pittsburgh-based enterprise software solutions provider, to offer real-time data integration, data auditing, and business intelligence solutions for customers on ADABAS platforms. The alliance leverages DataMirror's expertise with Change Data Capture (CDC) technology for moving data between disparate platforms and TSI's expertise with ADABAS databases, exemplified by DPS X-Link, TSI's product for XML-based ADABAS data integration. Together, DataMirror and TSI deliver the unique ability to integrate ADABAS databases in real-time with other platforms and databases.

As the leading ISV for Software AG technology, TSI will market DataMirror software solutions to its existing base of ADABAS customers worldwide. The alliance addresses customer demand for CDC technology that integrates data from other production systems into ADABAS. By using DataMirror Transformation Server(TM) software with DPS X-Link, TSI's middleware for providing read and write access to ADABAS from XML-based content, enterprises benefit from the real-time, low-impact flow of information to and from ADABAS.

"With a solid reputation for delivering solutions that meet the needs of the ADABAS market, DataMirror is pleased to welcome Treehouse Software to the DataMirror Partner Program," said Stewart Ritchie, Senior Vice-President, Worldwide Sales, DataMirror. "In forming an alliance with Treehouse, DataMirror enhances the data integration, data auditing, and business intelligence capabilities of existing Treehouse customers by delivering Change Data Capture technology that moves data between production systems and DPS X-Link to provide continuous access to reliable data."

By forming a strategic sales and marketing alliance with DataMirror, TSI enhances its solution offering and becomes the first DataMirror partner to market DataMirror Transformation Server ES, a real-time solution for integrating the flow of information to message oriented middleware. DataMirror offers more than 10 years of leadership with best-of-breed real-time data integration, data audit, data protection and Java database solutions.

For more information about Transformation Server ES, visit www.treehouse.com/DataMirror.shtml.

"Treehouse Software welcomes the opportunity to work with DataMirror to deliver enhanced data replication solutions to ADABAS customers," said Wayne Lashley, Director of Technical Operations, TSI. "Together, DataMirror and Treehouse are prepared to deliver value to existing customers by enabling them to integrate data from a wider range of applications, which translates into better decision-making abilities and a full realization of IT investments. Our alliance with DataMirror allows us to widen the capability gap in our already-substantial lead over other replication and integration solutions in the ADABAS market space."

TSI is a DataMirror Bronze Partner.

About Treehouse Software, Inc.
For over 22 years, Treehouse Software, Inc. (TSI) has been the leading third-party provider of software and services for enterprises using ADABAS and NATURAL from Software AG of Germany. TSI's traditional offerings include popular products designed to enhance security, control, auditing, and performance. The company's current focus is on products and services that enable Software AG customers to leverage their investment in legacy systems with real-time data integration, data warehousing, data distribution and conversion, XML, and additional new technologies.

The company is privately held and is based in Sewickley, PA, a suburb of Pittsburgh. Additional information is available at http://www.treehouse.com.

About DataMirror
DataMirror (Nasdaq: DMCX; TSX: DMC - News), a leading provider of real-time data integration, protection 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 competitive advantage from DataMirror software. DataMirror is headquartered in Markham, Canada and has offices around the globe. For more information, visit www.datamirror.com.