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                                                    <td style="vertical-align: top;; padding: 0; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://hibernate.atlassian.net/browse/HHH-11049" style="color: #3b73af; text-decoration: none">Re: Latest 5.1.1 throws hundreds of warnings</a> </span> </td> 
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                                                    <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin: 10px 0 0; margin-top: 0">A stack trace at this point would be nice. </p> <p style="margin: 10px 0 0">My guess is that something causes the "original Connection" (as defined by this <tt>SessionTransactionData#preparedCon</tt>) to get released and then the call for the "current Connection" (reflectively accessed via <tt>SessionImpl#connection</tt>) gets a new Connection. But I am not really setup to debug Spring; nor would that really be within my core competency set.</p> <p style="margin: 10px 0 0">Another option would be to play around with the <tt>hibernate.connection.acquisition_mode</tt> setting added in 5.1. It was an incubating feature, and how you specify this changed in 5.2, but it works the same in both once specified: namely, if set to <tt>org.hibernate.ConnectionAcquisitionMode#AS_NEEDED</tt> (the legacy and default value) Connections will be released and (re)acquired as needed (within rules). However the new feature there is <tt>org.hibernate.ConnectionAcquisitionMode#IMMEDIATELY</tt> which forces Hibernate to immediately (as soon as the Session is opened) acquire the JDBC Connection and hold on to it for the duration of the Session being open.</p> </td> 
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