I am trying to insert a new row into my database but it is giving me an error

Exception in thread "main" org.hibernate.StaleStateException: Batch update returned unexpected row count from update: 0 actual row count: 0 expected: 1
at org.hibernate.jdbc.BatchingBatcher.checkRowCount(BatchingBatcher.java:88)
at org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:74)
at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:57)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:154)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:226)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:136)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:274)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:669)
at roseindia.tutorial.hibernate.FirstExample.main(FirstExample.java:43)

I have used postgres Dialect and am using a simple setter class.
Please help me out on this.It's very urgent

Thanx in advance.

What is the mapping for the primary key of the class that is being updated by the query?



Farzad-