Hi List, I am searching for a solution to limit a user to a dedicated service. the Idea behind is to have a connection manager where I can sort out src_IPs and services. But I only want to allow very limited users from the 'untrusted cloud' behind the cman. If there is nothing prepared from Oracle for such an demand, I just will create a logon trigger. But first I have to ask - not to reinvent the weel. cman => 11.2.0.2 @ Solaris rdbms/listener/crs => 11.2.0.1 @ linux 64bit thanks Martin -- //www.freelists.org/webpage/oracle-l