anonymous wrote : Sorry, just to clarify... are you saying that blobs are not stored in the table and it's just the reference that is stored? The message is payload is stored as a blob in the JBM_MSG table. anonymous wrote : Also, do you know if there's a maximum message size - as I mentioned we tried 10k, but potentially we could be using 20k+? Only memory will restrict how big a message is. Also afaik mysql cluster maximum row size does not include blobs so you are ok. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4207255#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...