[英]Hibernate Criteria setMaxResults with Oracle 11G giving org.hibernate.exception.SQLGrammarException: ORA-00918: column ambiguously defined
[英]Hibernate Criteria.setMaxResults() fails on Oracle 11g
使用hibernate通過org.hibernate.dialect.Oracle10gDialect或org.hibernate.dialect.OracleDialect從Oracle 11g DB檢索數據時,我得到以下信息:
org.hibernate.exception.SQLGrammarException: could not execute query
Caused by: java.sql.SQLSyntaxErrorException: ORA-00923: FROM keyword not found where expected
查看日志,我們可以看到查詢:
select top ? this_.LI_ILN as LI1_8_0_, this_.COUNTRY_CODE ...
顯然,DB無法識別關鍵字,這就是問題所在,因為在Oracle分頁中只能使用ROWNUM來完成,這是Hibernate應該知道的。
休眠配置如下所示:
<hibernate-configuration>
<session-factory name="HibernateSessionFactory">
<property name="hibernate.bytecode.use_reflection_optimizer">false</property>
<property name="hibernate.connection.driver_class">oracle.jdbc.OracleDriver</property>
<property name="hibernate.connection.password">...</property>
<property name="hibernate.connection.url">...</property>
<property name="hibernate.connection.username">...</property>
<property name="hibernate.default_schema">...</property>
<property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property>
<property name="hibernate.search.autoregister_listeners">false</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.hbm2ddl.auto">validate</property>
<property name="hibernate.transaction.auto_close_session">false</property>
<mapping resource="HB_Mappings/Supplier.hbm.xml" />
</session-factory>
查詢是這樣完成的:
Criteria crit = sessionFactory.getCurrentSession().createCriteria(Supplier.class);
crit.setFirstResult(50 * pageIndex);
crit.setMaxResults(50);
List<Supplier> list = crit.list();
任何幫助表示贊賞。
解決了:
忘了提到我正在使用spring,其中applicationContext.xml如下所示:
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation">
<value>classpath:HB_Mappings/hibernate.cfg.xml</value>
</property>
<property name="hibernateProperties">
<value>hibernate.dialect=org.hibernate.dialect.HSQLDialect</value>
</property>
</bean>
它覆蓋了hibernate.cfg.xml的屬性...
自我注意:復制粘貼時要輕松
不推薦使用OracleDialect,請參見此處: http ://docs.jboss.org/hibernate/core/4.1/javadocs/org/hibernate/dialect/OracleDialect.html
改用Oracle10gDialect: http : //docs.jboss.org/hibernate/core/4.1/javadocs/org/hibernate/dialect/Oracle10gDialect.html
還要檢查一下,並確保您使用的是最新的Oracle JDBC驅動程序。
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