ogg奇怪问题。源端传给目标端的文件一直是0字节

[qq1333]

源端已经生成文件传给目标端，目标端收到生成的文件，但一直是0。

Dec 31 16:35:54 pmcpdp2 Oracle GoldenGate Collector for Oracle[29649]: 2014-12-31 16:35:54 INFO OGG-01228 Oracle GoldenGate Collector for Oracle: Timeout in 300 seconds.
Dec 31 16:35:59 pmcpdp2 Oracle GoldenGate Collector for Oracle[29649]: 2014-12-31 16:35:59 INFO OGG-01229 Oracle GoldenGate Collector for Oracle: Connected to :65296.
Dec 31 16:35:59 pmcpdp2 Oracle GoldenGate Collector for Oracle[29649]: 2014-12-31 16:35:59 INFO OGG-01669 Oracle GoldenGate Collector for Oracle: Opening ./dirdat/mds/da000000 (byte -1, current EOF 0).
Dec 31 16:35:59 pmcpdp2 Oracle GoldenGate Collector for Oracle[29649]: 2014-12-31 16:35:59 INFO OGG-01670 Oracle GoldenGate Collector for Oracle: Closing ./dirdat/mds/da000000.
Dec 31 16:35:59 pmcpdp2 Oracle GoldenGate Collector for Oracle[29649]: 2014-12-31 16:35:59 INFO OGG-01669 Oracle GoldenGate Collector for Oracle: Opening ./dirdat/mds/da000000 (byte -1, current EOF 0).
Dec 31 16:38:40 pmcpdp2 Oracle GoldenGate Collector for Oracle[29649]: 2014-12-31 16:38:40 INFO OGG-01670 Oracle GoldenGate Collector for Oracle: Closing ./dirdat/mds/da000000.
Dec 31 16:38:40 pmcpdp2 Oracle GoldenGate Collector for Oracle[29649]: 2014-12-31 16:38:40 INFO OGG-01676 Oracle GoldenGate Collector for Oracle: Terminating after client disconnect.

什么原因照成的呢 ？？

[小灰狼W]

data pump进程的状态是否正常？源端的ggserr.log中是否有异常信息 重点检查data pump进程和主备机之间的网络