> I have use the JPA(oracle) way to share ticket,but it ofen down by the
> deadlock!

I would strongly recommend attempting to solve your performance and
availability problems with JPA before moving to another storage
mechanism.  What database platform are you using?  Have you created
the indices as described in the red box at the top of
https://wiki.jasig.org/display/CASUM/JpaTicketRegistry?  These
dramatically reduce probability of deadlocks on some platforms.  There
are strategies on other platforms besides, but I'll need to know your
platform to help further.

M

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