StaleObjectstateException row was updated or deleted by

Question

I am getting this exception in a controller of a web application based on spring framework using hibernate. I have tried many ways to counter this but could not resolve it.<

Answer 1

I also have been struggling with this exception, but when it continued to recur even when I put a lock on the object (and in a test environment, where I knew I was the only process touching the object), I decided to give the parenthetical in the stack trace its due consideration.

org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [com.rc.model.mexp.MerchantAccount#59132]

In our case it turned out that the mapping was wrong; we had type="text" in the mapping for one field that was a mediumtext type in the database, and it seems that Hibernate really hates that, at least under certain circumstances. We removed the type specification altogether from the mapping for this field, and the problem was resolved.

Now the weird thing is that in our production environment, with the supposedly problematic mapping in place, we do NOT get this exception. Does anybody have any idea why this might be? We are using the same version of MySQL - "5.0.22-log" (I don't know what the "-log" means) - in dev and production envs.