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From Craig L Russell <>
Subject Re: Error trying to use @OneToOne two-sided relationship
Date Thu, 10 Feb 2011 22:58:31 GMT
Hi Daniel,

In order to tell what's going on, it would be good to see some code.  
The classes on both sides of the relationship and the code that  
changes the relationship are the minimum needed to tell anything...

Except, of course, for the obvious. Have you mapped multiple fields to  
the same database column? Have you set both sides of the relationship?



On Feb 10, 2011, at 2:04 PM, danieldomingues86 wrote:

> Hi,
> I found a error, trying to use a @OneToOne two-sided relation between
> objects.
> I get this error :
> Attempt to set column "TB_SERVICES.CD_USER" to two different values:
> (null)"null", (class java.lang.Integer)"55" This can occur when you  
> fail to
> set both sides of a two-sided relation between objects, or when you  
> map
> different fields to the same column, but you do not keep the values  
> of these
> fields in synch.
> I tried many things and this is very strange, because this problem  
> just
> occurs with @OneToOne mapping.
> Any Clue?
> Regards,
> Daniel.
> -- 
> View this message in context:
> Sent from the OpenJPA Developers mailing list archive at

Craig L Russell
Architect, Oracle
408 276-5638
P.S. A good JDO? O, Gasp!

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