HuiSheng Xu [http://community.jboss.org/people/rebody] replied to the discussion "Command service txn management" To view the discussion, visit: http://community.jboss.org/message/552236#552236 -------------------------------------------------------------- Hi MM, The DatabaseIdGenerator need second commandService to fetch the id from database in a seperated Transaction,  please refer jbpm.default.cfg.xml <object class='org.jbpm.pvm.internal.id.DatabaseDbidGenerator'>       <field name="commandService"><ref object="newTxRequiredCommandService" /></field>     </object> I didn't know anything about the third commandService,  maybe it is an out of date configuration. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/552236#552236] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]