求救：连接数据库问题！

我用ssh进行开发一个小项目，每次tomcat启动后对数据库进行操作（增删改查）只能操作8次 就卡住了以下是日志文件信息（最后2行信息）大家帮忙看下：
2008-12-04 17:45:33 org.hibernate.hql.ast.ASTQueryTranslatorFactory.<init>(ASTQueryTranslatorFactory.java:24)  Using ASTQueryTranslatorFactory
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:221)  Query language substitutions: {}
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:226)  JPA-QL strict compliance: disabled
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:231)  Second-level cache: enabled
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:235)  Query cache: disabled
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.createCacheProvider(SettingsFactory.java:369)  Cache provider: org.hibernate.cache.NoCacheProvider
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:250)  Optimize cache for minimal puts: disabled
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:259)  Structured second-level cache entries: disabled
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:279)  Echoing all SQL to stdout
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:286)  Statistics: disabled
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:290)  Deleted entity synthetic identifier rollback: disabled
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:305)  Default entity-mode: pojo
2008-12-04 17:45:33 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:309)  Named query checking : enabled
2008-12-04 17:45:33 org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:161)  building session factory
2008-12-04 17:45:34 org.hibernate.impl.SessionFactoryObjectFactory.addInstance(SessionFactoryObjectFactory.java:82)  Not binding factory to JNDI, no JNDI name configured
2008-12-04 17:45:34 org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:198)  Root WebApplicationContext: initialization completed in 6219 ms还有就是我的spring信息:
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName"
value="com.microsoft.sqlserver.jdbc.SQLServerDriver">
</property>
<property name="url"
value="jdbc:sqlserver://localhost:1433;databaseName=MyOffice">
</property>
<property name="username" value="sa"></property>
<property name="password" value="123456"></property>
</bean> <bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.SQLServerDialect
</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>entity/Employee.hbm.xml</value>
</list>
</property>
</bean>