Hello Everyone, I am running into several issues with implementation of solution for this security alerts. 1. There is no patch (or I could not find one) 12880299 for 10.2.0.3 on Solaris 2. I have multiple databases and multiple listeners running on same machine. We have dedicated listener for each database. After adding "(ADDRESS = (PROTOCOL = IPC)(KEY = REGISTER))" to one listener, I can not add this to anymore listener. 3. One of the databases is using extproc so I have "(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))" in the listener, again preventing me from adding KEY=REGISTER. I any one has encountered this and has solution/suggestion, I would like to hear. I already have opened a SR with Oracle support and waiting for reply, but often I get more reliable answers - quicker form the experts on the list. Any help is greatly appreciated. Thank you Mayen -- //www.freelists.org/webpage/oracle-l