here is a new information:
When i restart an instance, i saw this query:
307 Query SELECT rowid, sessattrdata, attributename FROM sessionattribute WHERE id = 'adb512cf86d9e0328b6613f741aa' AND appid = 'cluster1:com.sun.appserv:server:/clusterjsp'
So with this query the instance can take the session information and its attributes.
But when the instances are both up, i can’t see a select query when i reload the hajsp page..
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