I am getting the following error. My program is updating the existing data and inserting a new data into another table within one transaction.

R net.sf.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect) for efi.edcs.dto.Priorflg instance with identifier: 1283864
at net.sf.hibernate.persister.AbstractEntityPersister.getCurrentPersistentState(AbstractEntityPersister.java:1256)
at net.sf.hibernate.impl.SessionImpl.flushEntity(SessionImpl.java:2531)
at net.sf.hibernate.impl.SessionImpl.flushEntities(SessionImpl.java:2478)
at net.sf.hibernate.impl.SessionImpl.flushEverything(SessionImpl.java:2280)
at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2259)
at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:61)
at efi.edcs.caseIntake.bussinessLogic.HibernateSessionFactory.commitTransaction(HibernateSessionFactory.java:153)
at efi.edcs.caseIntake.bussinessLogic.HibernateFilter.doFilter(HibernateFilter.java:45)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:132)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:71)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:939)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:530)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:176)
at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:79)
at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:201)
at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:182)
at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:610)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:431)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:593)

from api docs...

http://www.hibernate.org/hib_docs/api/net/sf/hibernate/StaleObjectStateException.html