org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1

Question

I am using struts and hibernate. I have a parent and child relation using set in hbm. In the action I am using session.saveOrUpdate() method to save but while s

Answer 1

So For my case I noticed hibernate is trying to update the record rather than inserting it and that thrown the exception mentioned.

I finally came to find that my entity had an updatedAt timestamp column:

and when I was trying to initialize the object i found that the code was setting this field explicitly.

after removing that setUpdateDate(new Date()) it worked and did an insert instead.