请问tomcat一段时间就死机是什么情况?

说明如题，

采用的是hibernate+spring MVC 


数据库的链接有关系吗？
 


<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="initialSize" value="200" />
<property name="maxActive" value="1608" />
<property name="maxIdle" value="200" />
<property name="minIdle" value="0" />
<property name="maxWait" value="300000" />
<property name="numTestsPerEvictionRun" value="3" />
<property name="testOnBorrow" value="true" />
<property name="testOnReturn" value="false" />
<property name="testWhileIdle" value="false" />
<property name="validationQuery" value="select 1 from DUAL" />
<property name="defaultAutoCommit" value="false" />
<property name="defaultReadOnly" value="false" />
<property name="poolPreparedStatements" value="false" />
<property name="maxOpenPreparedStatements" value="0" />
<property name="minEvictableIdleTimeMillis" value="1800000" />
<property name="timeBetweenEvictionRunsMillis" value="900000" />
</bean>

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