Hi Daryl, We were using Sun JDK 1.4.2_12 right after upgrading to 4.1.1 however we
were getting out of memory errors. When we were running 4.0.3 in the past, we had similar issues with Sun VM (I think it was 1.3) and upgraded to JRocket and the problems went away. So we followed that plan again, upgraded to JRocket 1.4 and the memory errors went away.
We made the same experience. JRockit 1.4 has better default settings for garbage collection than the Sun JDK. But for both it is worth tuning garbage collection and setting the right parameters according to your environment (number of CPUs etc.). You can really gain a lot and work against the slow responses and the OutOfMemory exceptions. Look for instance at: http://e-docs.bea.com/wlcp/wlss30/configwlss/jvmgc.html and http://e-docs.bea.com/wljrockit/docs142/userguide/memman.html Greetings, Benjamin
