yap, i understand what you say but i think that this is not good way, i have approximately 100 session bean where i use data sources. do you think that if i did what you say into onMessage and then all sesssion beans get datasources from this message driven ben is good idea ??? i thought that is is possible to change anything in ha-xa-datasource and i could manage datasources. and anyway, why i cannot have one -ds.xml file which contains mutiple datasources ??? i have multiple database but all of them are the same vendor : Oracle . i think there is no problem if i have one -ds.xml file. ______________ Regards Paata. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4082068#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...