gencon bug in IBM JDK earlier than SR5
By Jay Lee on Aug 27, 2008
be careful to use -Xgcpolicy:gencon when using JDK earlier than SR5.
there is a bug :
this can eventually lead the WAS to OOM as compaction doesn't take place
because of bad internal logic. u can witness that cpu usage top to 100% and do nothing just wasting whole cpu time to try gc.
use it carefully especially if u're using BPEL or ESB and handling large payload, though it's
not the the *best-fit* gcpolicy for them in most cases.