Hi all, In my previoous post where you read OC4J read Orion 1.5.2 and "getting started" documentation is http-clustering.html. Sorry :) Submitted in bugzilla as bug 590. However the problem exists also in the Oracle version derived from Orion (OC4J). Luciano -----Original Message----- From: Montebove Luciano [mailto:[EMAIL PROTECTED]] Sent: giovedì 16 agosto 2001 10.22 To: Orion-Interest Subject: URGENT: serious clustering bug? I'm doing some tests on the http clustering feature of Orion. Following the "getting started" documentation I was able to setup an island with two OC4J servers and a loadbalancer. For testing I used the SessionServlet who increase (any time you call it) an Integer variable in the HttpSession (counter). All works fine up to about a counter value of 80. After that you get a java.lang.ClassCastException due to the fact that the object returned from the HttpSession is no more an Integer (from a modified version of the servlet I discovered I get "[B" as the class of the object returned). Tested on WindowsNT and Linux with sun JDK 1.3.1 To reproduce the error I discovered isn't necessary to setup a real cluster, but you only need to add a <cluster-config/> in the orion-web.xml and load the SessionServlet. Anyone alse experienced this problem? If so I'll submit the bug to Bugzilla. Luciano