'Java persistence storedProcedureQuery.execute() stay stuck

I use a storedprocedurequery to call a PL/SQL procedure with execute method. It works fine. But when I launch it on bigger set of data the procedure takes approximately 90 minutes to execute. It ends without problem (say the traces). But the code is stuck on the execute. I have no error or message in Java console. It stays stuck on hibernate call procedure. Any idea what's happening?



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