"nathanmesser" wrote : | java.lang.OutOfMemoryError: allocLargeObjectOrArray - Object size: 199376, Num elements: 49840 | at org.jboss.cache.util.ImmutableListCopy.(ImmutableListCopy.java:74) | at org.jboss.cache.util.Immutables.immutableListConvert(Immutables.java:66) | at org.jboss.cache.transaction.AbstractTransactionContext.getLocks(AbstractTransactionContext.java:177) | That's a large collection you're copying. :-) Is this probable, you have a single transaction that touched almost 50,000 nodes in the cache?!? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4211554#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...