type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.hibernate.StaleStateException: Batch update returned unexpected row count from update: 0 actual row count: 0 expected: 1
org.hibernate.jdbc.BatchingBatcher.checkRowCount(BatchingBatcher.java:93)
org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:79)
org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:58)
org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:195)
org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:230)
org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:141)
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:296)
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
org.hibernate.impl.SessionImpl.flush(SessionImpl.java:980)
org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:353)
org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
servlet.Alternatecontact.doGet(Alternatecontact.java:163)
javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)


note The full stack trace of the root cause is available in the Apache Tomcat/5.5 logs.

Check this http://www.laliluna.de/258.html

This also happened to me when I was juggling data between two EntityManagers and did not correctly merge() between them - so I guess that this might occur in other detaching scenarios.