本文介绍了用Spring缓慢关闭myBatis中的SqlSession的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我的myBatis遇到麻烦了.在春季启用事务管理器后，我发现事务方法(甚至是非事务方法)的性能严重下降:
I have a trouble with myBatis. I see serious performance degradation on transactional methods (And even non transactional) after enabling transaction manager in spring:
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="url" value="${database.url}"/>
<property name="driverClassName" value="${database.driver}" />
<property name="username" value="${database.user}" />
<property name="password" value="${database.password}" />
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="typeAliasesPackage" value="com.company.model" />
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.company.mapper" />
</bean>
以日志为例，您可以看到在关闭和开始新事务之间大约需要150毫秒.
Log for example, as you can see there are about 150 milliseconds between closing and starting new transaction.
09:28:58.134 [http-bio-9081-exec-12] DEBUG o.m.s.SqlSessionUtils - Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@cf80c3]
09:28:58.297 [http-bio-9081-exec-3] DEBUG o.m.s.SqlSessionUtils - Creating a new SqlSession
数据库:Oracle 11.2谢谢.
Database: Oracle 11.2Thanks.
推荐答案
原因很愚蠢.是数据库降级.
The reason was stupid. It was database degradation.
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