There is an article about setting up DataSourceUserManager at http://www.orionsupport.com/articles/datasourceusermanager.html If you use oracle and happen to copy/paste something from this page then please do not do the same mistake I did. This example uses column name 'group' which is not something that should be used. You can easily create table containing a column with this name and you can even add data into this but even simplest sql queries do not work. If you are using oracle dba studio for example then you won't even notice it. with best wishes, Taavi