binary build using maven plugin failed

BUILD FAILED
File...... C:\Documents and Settings\xxx\.maven\cache\maven-jetspeed2-plugin-2.0\plugin.jelly
Element... fail
Line...... 698
Column.... 91
unsupported target database:
Total time: 10 seconds
Finished at: Wed Oct 11 16:18:04 EDT 2006

Here is my build.properties

basedir = c:/home/mytestportal

1. required portal configuration properties
   org.apache.jetspeed.portal.home = c:/home/mytestportal
   org.apache.jetspeed.portal.groupId = myprojects
   org.apache.jetspeed.portal.artifactId = myportal
   org.apache.jetspeed.portal.name = My Test Portal
   org.apache.jetspeed.portal.currentVersion = 2.0

portals.bridges.version = 1.0
derby.version = 10.1.2.1

CATALINA_HOME = C:/Program Files/Apache Software Foundation/apache-tomcat-5.5.20

1. required application server properties
   org.apache.jetspeed.server.home = ${CATALINA_HOME}/
   org.apache.jetspeed.server.shared = ${org.apache.jetspeed.server.home}/shared/lib/
   org.apache.jetspeed.deploy.war.dir = ${org.apache.jetspeed.server.home}/webapps/
   org.apache.jetspeed.services.autodeployment.user = j2deployer
   org.apache.jetspeed.services.autodeployment.password = j2deployer
   org.apache.jetspeed.catalina.version.major = 5.5