Hi, everyone!

It frequently happens the following errors of my system.
Platform:
Tomcat 5.0+Hibernate2.0.2+mysql4.0.16

The errors information are as following(part of loging errors)
:
13:08:28,184 WARN JDBCExceptionReporter:38 - SQL Error: 1062, SQLState:
S1009
13:08:28,185 ERROR JDBCExceptionReporter:46 - Invalid argument value,
message from server: "Duplicate entry 'liuhengyange@sohu.com' for key 2"
13:08:28,186 WARN JDBCExceptionReporter:38 - SQL Error: 1062, SQLState:
S1009
13:08:28,187 ERROR JDBCExceptionReporter:46 - Invalid argument value,
message from server: "Duplicate entry 'liuhengyange@sohu.com' for key 2"
13:08:28,188 ERROR JDBCExceptionReporter:38 - Could not execute JDBC batch
update
java.sql.BatchUpdateException: Invalid argument value, message from server:
"Duplicate entry 'liuhengyange@sohu.com' for key 2"
at
com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1469)
at
net.sf.hibernate.impl.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:54
)
at
net.sf.hibernate.impl.BatcherImpl.executeBatch(BatcherImpl.java:118)
at
net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2311)
at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2261)
at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2187)
at com.efn.DB.DAO.BaseDAO.saveObj(BaseDAO.java:333)
at com.efn.DB.DAO.UserDAO.saveUser(UserDAO.java:14)
at com.efn.Engine.UserManager.addUser(UserManager.java:148)
at
com.efn.web.user.actions.regsteponeAction.reg(regsteponeAction.java:97)
at
com.efn.web.user.actions.regsteponeAction.execute(regsteponeAction.java:57)
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProces

Any help will be much appreciated!!!

George

Your column has a unique constraint. So inserting the same value twice will fail.