William, In brief this is all a part of the FAN framework where a listener registers with ONS. You shouldn't have this problem if you set SUBSCRIBE_FOR_NODE_DOWN_EVENT_<listener> to OFF which should disable ONS subscription If you still have an issue can you paste/send the output of onsctl debug Thanks Fairlie William Wagman <wjwagman@xxxxxxxxxxx> wrote: Greetings, On a two node RAC cluster, Oracle 10.2.0.3.0 Enterprise Edition on RHEL4 64-bit using CRS. In my listener.log I see numerous occurrences of the message... WARNING: Subscription for node down event still pending In searching for the web I find it commonly suggested that the listener.ora file by updated to include the parameter SUBSCRIBE_FOR_NODE_DOWN_EVENT_LSNR= This is where I get lost. I am unable to find any documentation as to what constitutes a node down event and what the ramifications are. What is a node down event? I have searched the Oracle docs for this parameter, nothing is found. Searching for listener.ora refers me to the net services guide but I am unable to find specific syntax for this parameter, it doesn't even appear in the index. Searching also refers me to the configuring the listener.ora in the various clusterware guides but again, no syntax for the parameter is given nor is it listed in the index. I'm stumped. What we are seeing is that our application is using web logic and it appears that after a while connections and querying start to slow down and restarting the listener temporarily appears to resolve the issue. Some of the notes about the warning message indicates that the listener encountering some memory issues but I really can't find any explanations of this anywhere. If anyone can shed any light on this or point me to some documentation on what this means or how to troubleshoot this problem I would be very grateful. Thanks. Bill Wagman Univ. of California at Davis IET Campus Data Center wjwagman@xxxxxxxxxxx (530) 754-6208 -- http://www.freelists.org/webpage/oracle-l Fairlie Rego Senior Oracle Consultant http://el-caro.blogspot.com/ M: +61 402 792 405 --------------------------------- Yahoo! oneSearch: Finally, mobile search that gives answers, not web links.