请大家帮忙关于异常：org.springframework.transaction.TransactionSystemException

最近在项目中间遇到一个棘手的问题，希望有经验的朋友能帮帮小弟，感激不尽。
具体问题是：在工程部署到tomcat，然后启动tamcat，登录工程，无任何问题，但是问题出在大概一个小时以后，重新访问工程，登录时抛出如下异常：

1 Exception Type: org.springframework.transaction.TransactionSystemException
2
3 网络正忙，请稍候再试！(RT) (Could not roll back Hibernate transaction; nested exception is org.hibernate.TransactionException: JDBC rollback failed)
4
5 org.springframework.transaction.TransactionSystemException: Could not roll back Hibernate transaction; nested exception is org.hibernate.TransactionException: JDBC rollback failed
6 org.hibernate.TransactionException: JDBC rollback failed
7     at org.hibernate.transaction.JDBCTransaction.rollback(JDBCTransaction.java: 170 )
8     at org.springframework.orm.hibernate3.HibernateTransactionManager.doRollback(HibernateTransactionManager.java: 603 )
9     at org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java: 583 )
10     at org.springframework.transaction.support.AbstractPlatformTransactionManager.rollback(AbstractPlatformTransactionManager.java: 560 )
11     at org.springframework.transaction.interceptor.TransactionAspectSupport.doCloseTransactionAfterThrowing(TransactionAspectSupport.java: 284 )
12     at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java: 100 )
13     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java: 170 )
14     at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java: 176 )
15     at $Proxy13.adminLogin(Unknown Source)
16     at com.imart.web.servlet.AdminLoginServlet.onLogin(AdminLoginServlet.java: 56 )
17     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
18     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 39 )
19     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 25 )
20     at java.lang.reflect.Method.invoke(Method.java: 585 )
21     at com.imart.web.core.servlet.AbstractServlet.invokeMethodDispatcher(AbstractServlet.java: 298 )
22     at com.imart.web.core.servlet.AbstractServlet.doGet(AbstractServlet.java: 210 )
23     at com.imart.web.core.servlet.AbstractServlet.doPost(AbstractServlet.java: 614 )
24     at javax.servlet.http.HttpServlet.service(HttpServlet.java: 709 )
25     at javax.servlet.http.HttpServlet.service(HttpServlet.java: 802 )
26     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java: 252 )
27     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java: 173 )
28     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java: 213 )
29     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java: 178 )
30     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java: 126 )
31     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java: 105 )
32     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java: 107 )
33     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java: 148 )
34     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java: 869 )
35     at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java: 664 )
36     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java: 527 )
37     at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java: 80 )
38     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java: 684 )
39     at java.lang.Thread.run(Thread.java: 595 )
40 Caused by: java.sql.SQLException: Couldn ' t perform the operation rollback: You can ' t perform any operations on this connection. It has been automatically closed by Proxool for some reason (see logs).
41     at org.logicalcobwebs.proxool.WrappedConnection.invoke(WrappedConnection.java: 207 )
42     at org.logicalcobwebs.proxool.WrappedConnection.intercept(WrappedConnection.java: 87 )
43     at oracle.jdbc.internal.ClientDataSupport$$EnhancerByCGLIB$$772388fb.rollback()
44     at org.hibernate.transaction.JDBCTransaction.rollbackAndResetAutoCommit(JDBCTransaction.java: 183 )
45     at org.hibernate.transaction.JDBCTransaction.rollback(JDBCTransaction.java: 162 )
46

32 more
47
48

不知这是否和spring的事务管理器配置有关
配置如下：

1 < bean id ="dataSource"
  2         class ="org.logicalcobwebs.proxool.ProxoolDataSource" >
  3          < property name ="driver" >
  4              < value > ${jdbc.driver} </ value >
  5          </ property >
  6          < property name ="driverUrl" >
  7              < value > ${jdbc.url} </ value >
  8          </ property >
  9          < property name ="user" >
10              < value > ${jdbc.username} </ value >
11          </ property >
12          < property name ="password" >
13              < value > ${jdbc.password} </ value >
14          </ property >
15          < property name ="alias" >
16              < value > ${proxool.alias} </ value >
17          </ property >
18          < property name ="houseKeepingSleepTime" >
19              < value > ${proxool.houseKeepingSleepTime} </ value >
20          </ property >
21          < property name ="minimumConnectionCount" >
22              < value > ${proxool.minimumConnectionCount} </ value >
23          </ property >
24          < property name ="maximumConnectionCount" >
25              < value > ${proxool.maximumConnectionCount} </ value >
26          </ property >
27          < property name ="prototypeCount" >
28              < value > ${proxool.prototypeCount} </ value >
29          </ property >
30          < property name ="trace" >
31              < value > ${proxool.trace} </ value >
32          </ property >
33          < property name ="verbose" >
34              < value > ${proxool.verbose} </ value >
35          </ property >
36      </ bean >
37
38
39      
40      < bean id ="sessionFactory"
41         class ="org.springframework.orm.hibernate3.LocalSessionFactoryBean" >
42          < property name ="configurationClass" >
43              < value > org.hibernate.cfg.AnnotationConfiguration </ value >
44          </ property >
45          < property name ="configLocation" >
46              < value > /WEB-INF/${hibernate.cfg} </ value >
47          </ property >
48          < property name ="hibernateProperties" >
49              < props >
50                  < prop key ="hibernate.dialect" >
51                     ${hibernate.dialect}
52                  </ prop >
53                  < prop key ="hibernate.show_sql" > ${jdbc.showsql} </ prop >
54                  < prop key ="hibernate.use_outer_join" > true </ prop >
55                  < prop key ="hibernate.format_sql" >
56                     ${jdbc.formate_sql}
57                  </ prop >
58                  < prop key ="hibernate.jdbc.batch_size" > 15 </ prop >
59                  < prop key ="hibernate.jdbc.fetch_size" > 5 </ prop >
60                  < prop key ="hibernate.default_batch_fetch_size" > 8 </ prop >
61                  < prop key ="hibernate.connection.release_mode" >
62                     auto
63                  </ prop >
64              </ props >
65          </ property >
66          < property name ="dataSource" >
67              < ref bean ="dataSource" />
68          </ property >
69
70      </ bean >
71
72
73      < bean id ="hibernateInterceptor"
74         class ="org.springframework.orm.hibernate3.HibernateInterceptor" >
75          < property name ="sessionFactory" >
76              < ref bean ="sessionFactory" />
77          </ property >
78      </ bean >
79
80      < bean id ="transactionInterceptor"
81         class ="org.springframework.transaction.interceptor.TransactionInterceptor" >
82          < property name ="transactionManager" >
83              < ref bean ="transactionManager" />
84          </ property >
85          < property name ="transactionAttributeSource" >
86              < bean
87                  class ="org.springframework.transaction.annotation.AnnotationTransactionAttributeSource" />
88          </ property >
89      </ bean >
90
91      < bean id ="transactionManager"
92         class ="org.springframework.orm.hibernate3.HibernateTransactionManager" >
93          < property name ="sessionFactory" >
94              < ref local ="sessionFactory" ></ ref >
95          </ property >
96      </ bean >
97
98      < bean id ="abstractTxDefinition"
99         class ="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
100         lazy-init ="true" >
101          < property name ="transactionManager" >
102              < ref bean ="transactionManager" />
103          </ property >
104          < property name ="transactionAttributeSource" >
105              < bean
106                  class ="org.springframework.transaction.annotation.AnnotationTransactionAttributeSource" >
107              </ bean >
108          </ property >
109      </ bean >
110
111
112      
113      < bean id ="adminDAO" class ="com.imart.model.dao.AdminDAO" >
114          < property name ="sessionFactory" >
115              < ref bean ="sessionFactory" />
116          </ property >
117      </ bean >
118
119
120      < bean id ="adminService" parent ="abstractTxDefinition" >
121          < property name ="proxyInterfaces" >
122              < value > com.imart.model.service.AdminService </ value >
123          </ property >
124          < property name ="target" >
125              < bean class ="com.imart.model.service.spi.AdminServiceImpl"
126                 init-method ="init" >
127              </ bean >
128          </ property >
129      </ bean >

proxool配置如下

#proxool setting
proxool.alias = imart - sim
proxool.houseKeepingSleepTime = 30000
proxool.minimumConnectionCount = 5
proxool.maximumConnectionCount = 1000
proxool.prototypeCount = 5
proxool.trace = false
proxool.verbose = false
proxool.maximumActiveTime = 300000
proxool.maximumConnectionLifetime = 3060000000

请大家帮忙 关于异常：org.springframework.transaction.TransactionSystemException