EAS7.5后台事务报错

EAS7.5后台事务报错：Error message:null
Stack trace:
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at com.kingdee.bos.service.job.wrapper.MethodWrapper.invoke(MethodWrapper.java:200)
at com.kingdee.bos.service.job.wrapper.MethodWrapper.execute(MethodWrapper.java:169)
at com.kingdee.bos.service.job.core.ThreadWorker.execute(ThreadWorker.java:160)
at com.kingdee.bos.service.job.core.ThreadWorker.run(ThreadWorker.java:106)
at java.lang.Thread.run(Thread.java:810)
Caused by: com.kingdee.eas.csinterface.common.DIPException: 读取数据异常: I/O Error: Read timed out

这是EIP中定时导K3凭证数据的后台事务，如果确认网络是正常的，请问应该如何检查这个磁盘读取超时错误。
---------------另外请问后台事务日志中 状态是 执行中 和 已就绪 到底是什么意思：

[tr] [td=253]32YAAAAFaedLym3R_151110230000 [td=61]执行中 [td=152]2015-11-10 23:00:00 [td=152]2015-11-10 23:00:00 [td=152]2015-11-10 23:00:00 [td=101] [td=101]server3@10.200.1.15 [td=101]administrator [td=152]2015-11-10 22:59:52
[tr] [td]32YAAAARTudLym3R_151110220000 [td]已就绪 [td]2015-11-10 22:00:00 [td] [td]2015-11-10 22:00:00 [td] [td]server4@10.200.1.15 [td]administrator [td]2015-11-10 21:59:52