Hi Michael,

thank you very much for your response!
I really wasn't aware that the optimistic locking only works on base of the
Read Committed as isolation level. 
I always thought that I've configured something wrong.
Thank you for clarifying this!


Michael Dick wrote:
> 
> Hi Tim,
> 
> Optimistic locking is really intended to work with a 'lighter' isolation
> level. The JPA spec itself assumes that you'll be using ReadCommitted.
> 
>  [...]
> 
> 


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