Have you implemented OpenMRS? Please participate in the Implementation Site Survey. If you already have, thank you!
As of OpenMRS 1.7.2, it is possible to run OpenMRS on IBM's WebSphere Application Server with their DB2 database. For more information, please read "Migrate OpenMRS to DB2 and WebSphere Application Server" on the IBM developerWorks site: http://www.ibm.com/developerworks/industry/library/ind-openmrs-db2-was/index.html