I tried jbpm4 on DB2 9.5. There is no db script for DB2, so you can use hibernate to auto generate the schema. The only tweak I did is change mapping definition for class Lob in the jbpm.execution.hbm.xml mapping file,add a length attribute to the BLOB_VALUE column. like this: This is for one problem hibernate has with DB2,( or DB2 has with hibernate). you can find more information here: http://antagonisticpleiotropy.blogspot.com/2008/05/ibm-db2-blobs-hibernat... After that, everything is fine. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4247722#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...