Subscribe_for_node_down_event
- From: "William Wagman" <wjwagman@xxxxxxxxxxx>
- To: "oracle-l" <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 18 May 2007 14:40:22 -0700
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=<some value>
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
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