They certainly ALL USE the local listener to try and register with it. If you have a listener which listens on the default connectore ( tcp,port 1521 ) then ALL databases will register with it unless you set the local listener parameter. On 2013-05-10, at 1:15 PM, Norman Dunbar wrote: > none of them use [or need] the local_listener. -- //www.freelists.org/webpage/oracle-l