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<td class="page-title-pattern-first-line " style="padding: 0; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-11053" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-33522b08-4b46-4510-ac21-41438cf9d307" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-11053" style="color: #3b73af; text-decoration: none">HHH-11053</a> </td>
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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-11053" style="color: #3b73af; text-decoration: none">Hibernate does not close C3P0 PooledDataSource when database is down</a> </span> </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Issue Type:</th>
<td class="has-icon" style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-avatar-33522b08-4b46-4510-ac21-41438cf9d307" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Affects Versions:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 5.2.2 </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Unassigned </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 16/Aug/2016 08:27 AM </td>
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<td class="has-icon" style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-major-106c6c89-b9a9-403b-818e-84ba0228b433" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="moser.kyle@gmail.com" id="email_moser.kyle@gmail.com" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=moser.kyle%40gmail.com" style="color:#6c797f;; color: #3b73af; text-decoration: none">Kyle M</a> </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-top:0;margin-bottom:10px;; margin: 10px 0 0; margin-top: 0">See <a href="http://stackoverflow.com/questions/38978468/hibernate-4-and-5-does-not-close-c3p0-connection-pool-if-the-database-is-down" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">http://stackoverflow.com/questions/38978468/hibernate-4-and-5-does-not-close-c3p0-connection-pool-if-the-database-is-down</a></p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Configure Hibernate:</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0"> public void init(...) {<br> try </p> { serviceRegistry = new StandardServiceRegistryBuilder().applySettings(config.getProperties()).enableAutoClose().build(); config.buildSessionFactory(serviceRegistry); } <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0"> catch (Exception e) </p> { closeSessionFactory(...); } <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0"> }</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Close Hibernate session factory:</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0"> public synchronized static void closeSessionFactory(...) </p> { sessionFactory.close(); StandardServiceRegistryBuilder.destroy(serviceRegistry); } <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Show c3p0 pools:</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0"> public static List<String> getPooledDataSources(){<br> ArrayList<String> pdsList = new ArrayList<>();<br> @SuppressWarnings("rawtypes")<br> Set sources = C3P0Registry.getPooledDataSources();<br> for (Object source : sources)</p> { PooledDataSource current = (PooledDataSource) source; pdsList.add("Name: " + current.getDataSourceName() + ". C3P0 identity token: " + current.getIdentityToken()); } <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0"> return pdsList;<br> }</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Now, if I configure then close Hibernate multiple times while my application runs, there is no problem. Printing the C3P0 pooled data sources shows that there is only one PooledDataSource. But if I apply the following rule on the database server:</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0"> iptables -I INPUT -s webServerIpAddress -j DROP</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Causing it to drop packets from my application, then closing and reconfiguring Hibernate a couple times... now printing the C3P0 pooled data sources shows that there are multiple pooled data sources: Hibernate isn't closing the old ones. Why? This problem on all versions of Hibernate I have tested, including 5.2.2 the newest version at time of this writing. </p> </td>
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