c3p0的简单应用

c3po的使用：
1.到官网找c3po，配置c3p0-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<c3p0-config>
     <!-- This app is massive! -->
    <named-config name="ajaxApp">
        <property name="acquireIncrement">2</property>
        <property name="initialPoolSize">5</property>
        <property name="minPoolSize">5</property>
        
        
        <property name="maxPoolSize">20</property>
        <!-- intergalactoApp adopts a different approach to configuring statement caching -->
        <property name="maxStatements">10</property>
        <property name="maxStatementsPerConnection">5</property>
        
        <property name="user">system</property>
		<property name="password">long</property>
		<property name="driverClass">oracle.jdbc.driver.OracleDriver</property>
		<property name="jdbcUrl">jdbc:oracle:thin:@192.168.0.2:1521:what</property>
    </named-config>
</c3p0-config>

2.使用
    DataSource ds = new ComboPooledDataSource("ajaxApp");
获得数据源，