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<td class="page-title-pattern-first-line " style="padding: 0px; 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-10269" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-df0a13d0-7478-4752-85cf-50ed0ef24062" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-10269" style="color: #3b73af; text-decoration: none">HHH-10269</a>
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<td style="vertical-align: top;; padding: 0px; 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-10269" style="color: #3b73af; text-decoration: none">JDBC Statement is not closed if exception appeared during query execution, JPA native query on Oracle database.</a> </span>
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Issue Type:
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Affects Versions:
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4.3.6
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Assignee:
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Unassigned
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Components:
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hibernate-core
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Created:
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11/Nov/2015 08:31 AM
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Environment:
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Oracle 11
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Priority:
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Reporter:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="pashaz" id="email_pashaz" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=pashaz" style="color:#6c797f;; color: #3b73af; text-decoration: none">Pavlo Z</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">JDBC Statement is not closed when exception appeared during query execution, JPA native query on Oracle v11 database.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">If run statement in cycle</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
entityManager.createNativeQuery(<span class="code-quote" style="color: #009100">"Select 1 from NotExistedTable"</span>).getResultList();
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">On iteration 300 error appeared: ORA-01000: maximum open cursors exceeded</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I can provide sample project if required, <br /> but issue is obvious by code review, method "org.hibernate.loader.Loader.doQuery(SessionImplementor, QueryParameters, boolean, ResultTransformer)"<br /> Exception appeared on line with "executeQueryStatement", this block is not covered by "finally".</p>
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<b>org.hibernate.loader.Loader.doQuery(SessionImplementor, QueryParameters, boolean, ResultTransformer)</b>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">private</span> List doQuery(
<span class="code-keyword" style="color: #000091">final</span> SessionImplementor session,
<span class="code-keyword" style="color: #000091">final</span> QueryParameters queryParameters,
<span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">boolean</span> returnProxies,
<span class="code-keyword" style="color: #000091">final</span> ResultTransformer forcedResultTransformer) <span class="code-keyword" style="color: #000091">throws</span> SQLException, HibernateException {
<span class="code-keyword" style="color: #000091">final</span> RowSelection selection = queryParameters.getRowSelection();
<span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">int</span> maxRows = LimitHelper.hasMaxRows( selection ) ?
selection.getMaxRows() :
<span class="code-object" style="color: #910091">Integer</span>.MAX_VALUE;
<span class="code-keyword" style="color: #000091">final</span> List<AfterLoadAction> afterLoadActions = <span class="code-keyword" style="color: #000091">new</span> ArrayList<AfterLoadAction>();
<span class="code-keyword" style="color: #000091">final</span> SqlStatementWrapper wrapper = executeQueryStatement( queryParameters, <span class="code-keyword" style="color: #000091">false</span>, afterLoadActions, session );
<span class="code-keyword" style="color: #000091">final</span> ResultSet rs = wrapper.getResultSet();
<span class="code-keyword" style="color: #000091">final</span> Statement st = wrapper.getStatement();
<span class="code-keyword" style="color: #000091">try</span> {
<span class="code-keyword" style="color: #000091">return</span> processResultSet( rs, queryParameters, session, returnProxies, forcedResultTransformer, maxRows, afterLoadActions );
}
<span class="code-keyword" style="color: #000091">finally</span> {
session.getTransactionCoordinator().getJdbcCoordinator().release( st );
}
}
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Also if enable logging, normal execution contains "JdbcCoordinatorImpl: Closing prepared statement", and absent in execution with exception.</p>
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<b>iteration for normal query</b>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
INFO org.hibernate.issues.NativeQueryIssueTest: Iteration: 319
DEBUG org.hibernate.SQL: Select 1 from Dual
TRACE org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl: Registering statement [oracle.jdbc.driver.OraclePreparedStatementWrapper@34645867]
TRACE org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl: Registering last query statement [oracle.jdbc.driver.OraclePreparedStatementWrapper@34645867]
TRACE org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl: Registering result set [oracle.jdbc.driver.ForwardOnlyResultSet@2484f433]
TRACE org.hibernate.type.descriptor.sql.BasicExtractor: extracted value ([1] : [NUMERIC]) - [1]
TRACE org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl: Releasing statement [oracle.jdbc.driver.OraclePreparedStatementWrapper@34645867]
TRACE org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl: Closing result set [oracle.jdbc.driver.ForwardOnlyResultSet@2484f433]
TRACE org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl: Closing prepared statement [oracle.jdbc.driver.OraclePreparedStatementWrapper@34645867]
TRACE org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl: Starting after statement execution processing [ON_CLOSE]
</pre>
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<b>iteration for query with exception</b>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
INFO org.hibernate.issues.NativeQueryIssueTest: Iteration: 300
DEBUG org.hibernate.SQL: Select 1 from NotExistedTable
TRACE org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl: Registering statement [oracle.jdbc.driver.OraclePreparedStatementWrapper@3234f74e]
TRACE org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl: Registering last query statement [oracle.jdbc.driver.OraclePreparedStatementWrapper@3234f74e]
WARN org.hibernate.engine.jdbc.spi.SqlExceptionHelper: SQL Error: 1000, SQLState: 72000
ERROR org.hibernate.engine.jdbc.spi.SqlExceptionHelper: ORA-01000: maximum open cursors exceeded
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Solution: "executeQueryStatement" have to be covered with "finally".</p>
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