NAME FIRST_CHANGE# FIRST_TIME
--------------------------------------------------------------------------- ------------- -------------------
+ARCH/prod/archivelog/2014_11_03/thread_2_seq_12.295.862650053 1484800 2014-11-02 17:41:26
+ARCH/prod/archivelog/2014_11_03/thread_1_seq_12.296.862650059 1484803 2014-11-02 17:41:26
+ARCH/prod/archivelog/2014_11_03/thread_2_seq_13.297.862650071 1514934 2014-11-03 09:00:52
+ARCH/prod/archivelog/2014_11_03/thread_1_seq_13.298.862650077 1514938 2014-11-03 09:00:57
+ARCH/prod/archivelog/2014_11_03/thread_2_seq_14.299.862650079 1514995 2014-11-03 09:01:10
+ARCH/prod/archivelog/2014_11_03/thread_1_seq_14.300.862650089 1514999 2014-11-03 09:01:16
+ARCH/prod/archivelog/2014_11_03/thread_1_seq_15.301.862653569 1515027 2014-11-03 09:01:28
+ARCH/prod/archivelog/2014_11_03/thread_2_seq_15.302.862653567 1515017 2014-11-03 09:01:19
+ARCH/prod/archivelog/2014_11_03/thread_2_seq_16.303.862653581 1526456 2014-11-03 09:59:27
+ARCH/prod/archivelog/2014_11_03/thread_1_seq_16.304.862653587 1526452 2014-11-03 09:59:29
+ARCH/prod/archivelog/2014_11_03/thread_1_seq_17.305.862653599 1526496 2014-11-03 09:59:47
6，删除目标端已经成功复制的100万条数据
SQL> truncate table t1;
7，抽取进程从2014-11-02 17:41:26再次抽取事务
GGSCI (node3) 2> stop ex1
GGSCI (node3) 3> ALTER EXTRACT ex1, TRANLOG, BEGIN 2014-11-02 17:41:26
GGSCI (node3) 5> start ex1
Sending START request to MANAGER ...
EXTRACT EX1 starting
GGSCI (node3) 6> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING DP1 00:00:00 00:00:04 <<延时逐渐在减少
EXTRACT RUNNING EX1 19:41:40 00:00:03
GGSCI (node3) 8> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING DP1 03:20:53 00:00:05 <<延时逐渐在减少
EXTRACT RUNNING EX1 03:20:52 00:00:06
GGSCI (node3) 9> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING DP1 03:20:53 00:00:10 <<延时逐渐在减少
EXTRACT RUNNING EX1 00:00:01 00:00:00
目标端重新复制了100万条记录
SQL> select count(*) from t1;
COUNT(*)
----------
1000000
GoldenGate单向表DML同步
Oracle GoldenGate 系列：Extract 进程的恢复原理