chanaporn temaismithi: My problem has resolved. The reason is the dialect used is net.sf.hibernate.dialect.Oracle9Dialect,but my dirver is older though it is for oracle 9i.I get a newer oracle 9i driver , it disappear .Hope this can help you.
I am a java guy in China and have passwd SCJP and SCWCD . The next step i will take is to pass SCEA. But I can't find enough resource to prepare for my test . Who can tell me where to download books about SCEA?