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How a BMP handles it is really up to you because you are the one coding the persistence mechanism. Setting the transaction setting on the bean correctly can help to overcome problems like dirty reads, phantom reads etc. ------------------ Craig Berry Author of Professional EJB
Craig Berry<br />Author of <a href="http://www.amazon.com/exec/obidos/ASIN/1861005083/ref=ase_electricporkchop" target="_blank" rel="nofollow">Professional EJB</a>
All of the world's problems can be solved in a garden - Geoff Lawton. Tiny ad: