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修改目的端trail文件的最大大小
本文为原创,转载请注明出处:
修改目的端trail文件的最大大小。
本文产生的背景:在OGG源数据库上,检查文件系统使用率的过程中,发现$OGG_HOME的使用率相当高,于是追查原因,查到dirdat目录下有大量的trail文件没有删除。这些trail文件都是去年产生的,早就被传输到目的端了。但是为什么没有被mgr 的PURGEOLDEXTRACTS 参数正常删除呢?
后来检查发现:源头的trail file(/u02/ggs/dirdat/aa)和目的端的trail file(u02/ggs/dirrdat/aa)的名字一样,这是导致源头os上 trail文件没有删除的原因。
具体是这么回事:比如说源头trail file(/u02/ggs/dirdat/aa)到了aa001000,此时目的端的trail file(u02/ggs/dirrdat/aa)却只到了aa000010。
OGG的mgr进程删除trail文件的判断逻辑为:
检查整个复制环境(包括源头和目的端)中的相同trail文件名的trail,获得最小的那个trail文件号,在此号之前的那些trail文件就会被OGG的mgr进程的PURGEOLDEXTRACTS 参数正常删除掉。这里有人会问:为啥源头到了/u02/ggs/dirdat/aa001000,目的端却只到了/u02/ggs/dirdat/aa000010 ?这是不是意味着丢了数据?
这个很好解释,包括但是不限于如下的原因:
1.源头trail文件最大大小是20M一个,目的端trail文件的最大大小是2M一个。
2.源头trail文件中包括10个表的信息,目的端trail文件中包括2个表的信息(即:传输进程的参数文件起到了过滤需要同步的table的作用)
因此,如上的情况不代表传丢了数据。
本文的思路就是调整目的端trail文件的大小,让目的端trail文件号的生成速度加快,即:让目的端的trail文件号尽快的追上源头的trail文件号,从而让OGG的mgr进程尽快的删除源头的trail文件。
额外注意:
1.调整目的端trail文件的大小 是在源头进行的,具体来说就是:修改源头的传输进程
2.在整个过程中,只需要停止一下传输进程,然后修改rmttrail文件大小,然后再启动传输进程即可。可以说风险极其微小。
调整步骤(以下均在源头机器上进行)
1.info 传输进程, showch
2.info 传输进程, detail
3.stop 传输进程
4.alter rmttrail /u02/ggs/dirdat/aa, extract 传输进程, megabytes 1
--->这个alter命令是修改远程的trail file /u02/ggs/dirdat/aa 的最大大小为1MB
5.info 传输进程, showch
6.info 传输进程, detail
7.start 传输进程
如下是当时操作的记录:
GGSCI (hosta) 2> info dpaa, showch EXTRACT DPAA Last Started 2014-07-25 17:30 Status RUNNING Checkpoint Lag 00:00:00 (updated 00:00:07 ago) Log Read Checkpoint File /u02/ggs/dirdat/aa019357 2014-08-01 14:08:29.000000 RBA 44906368 Current Checkpoint Detail: Read Checkpoint #1 GGS Log Trail Startup Checkpoint (starting position in the data source): Sequence #: 18965 RBA: 36113095 Timestamp: 2014-07-25 16:37:28.000000 Extract Trail: /u02/ggs/dirdat/aa Current Checkpoint (position of last record read in the data source): Sequence #: 19357 RBA: 44906368 Timestamp: 2014-08-01 14:08:29.000000 Extract Trail: /u02/ggs/dirdat/aa Write Checkpoint #1 GGS Log Trail Current Checkpoint (current write position): Sequence #: 5341 RBA: 36395386 Timestamp: 2014-08-01 14:08:35.734473 Extract Trail: /u02/ggs/dirdat/aa Header: Version = 2 Record Source = A Type = 1 # Input Checkpoints = 1 # Output Checkpoints = 1 File Information: Block Size = 2048 Max Blocks = 100 Record Length = 2048 Current Offset = 0 Configuration: Data Source = 0 Transaction Integrity = 1 Task Type = 0 Status: Start Time = 2014-07-25 17:30:55 Last Update Time = 2014-08-01 14:08:35 Stop Status = A Last Result = 400 GGSCI (hosta) 3> info DPAA, showch EXTRACT DPAA Last Started 2014-07-25 17:30 Status RUNNING Checkpoint Lag 00:00:00 (updated 00:00:07 ago) Log Read Checkpoint File /u02/ggs/dirdat/aa019357 2014-08-01 14:09:43.000000 RBA 46549780 Current Checkpoint Detail: Read Checkpoint #1 GGS Log Trail Startup Checkpoint (starting position in the data source): Sequence #: 18965 RBA: 36113095 Timestamp: 2014-07-25 16:37:28.000000 Extract Trail: /u02/ggs/dirdat/aa Current Checkpoint (position of last record read in the data source): Sequence #: 19357 RBA: 46549780 Timestamp: 2014-08-01 14:09:43.000000 Extract Trail: /u02/ggs/dirdat/aa Write Checkpoint #1 GGS Log Trail Current Checkpoint (current write position): Sequence #: 5341 RBA: 36782463 Timestamp: 2014-08-01 14:10:02.300738 Extract Trail: /u02/ggs/dirdat/aa Header: Version = 2 Record Source = A Type = 1 # Input Checkpoints = 1 # Output Checkpoints = 1 File Information: Block Size = 2048 Max Blocks = 100 Record Length = 2048 Current Offset = 0 Configuration: Data Source = 0 Transaction Integrity = 1 Task Type = 0 Status: Start Time = 2014-07-25 17:30:55 Last Update Time = 2014-08-01 14:10:02 Stop Status = A Last Result = 400 GGSCI (hosta) 4> info dpaa, detail EXTRACT DPAA Last Started 2014-07-25 17:30 Status RUNNING Checkpoint Lag 00:00:00 (updated 00:00:03 ago) Log Read Checkpoint File /u02/ggs/dirdat/aa019357 2014-08-01 14:10:00.000000 RBA 46852715 Target Extract Trails: Remote Trail Name Seqno RBA Max MB /u02/ggs/dirdat/aa 5341 36852196 50 --->注意此处的50M,此时是改之前。 Extract Source Begin End /u02/ggs/dirdat/aa019357 2014-07-25 16:37 2014-08-01 14:10 /u02/ggs/dirdat/aa018965 2014-07-25 16:14 2014-07-25 16:37 /u02/ggs/dirdat/aa018965 2014-07-25 12:20 2014-07-25 16:14 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-04 18:17 2014-07-25 12:20 /u02/ggs/dirdat/aa017864 2014-06-30 18:32 2014-07-04 18:17 /u02/ggs/dirdat/aa017531 2014-06-06 10:01 2014-06-30 18:32 /u02/ggs/dirdat/aa016295 2014-06-06 10:01 2014-06-06 10:01 /u02/ggs/dirdat/aa016295 2014-06-06 10:01 2014-06-06 10:01 /u02/ggs/dirdat/aa016295 2014-06-01 08:39 2014-06-06 10:01 /u02/ggs/dirdat/aa016049 2014-05-02 10:06 2014-06-01 08:39 /u02/ggs/dirdat/aa014617 2014-04-11 02:49 2014-05-02 10:06 /u02/ggs/dirdat/aa013640 2014-03-29 09:01 2014-04-11 02:49 /u02/ggs/dirdat/aa013090 2014-03-18 22:12 2014-03-29 09:01 /u02/ggs/dirdat/aa012599 2014-01-20 20:22 2014-03-18 22:12 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-03 18:59 2014-01-20 20:22 /u02/ggs/dirdat/aa009782 2013-12-02 10:21 2014-01-03 18:59 /u02/ggs/dirdat/aa008290 2013-12-02 10:21 2013-12-02 10:21 /u02/ggs/dirdat/aa008290 2013-12-02 10:21 2013-12-02 10:21 /u02/ggs/dirdat/aa008290 2013-12-02 10:21 2013-12-02 10:21 /u02/ggs/dirdat/aa008290 2013-12-02 10:21 2013-12-02 10:21 /u02/ggs/dirdat/aa008290 2013-10-26 07:26 2013-12-02 10:21 /u02/ggs/dirdat/aa006549 2013-10-11 16:13 2013-10-26 07:26 /u02/ggs/dirdat/aa005885 2013-08-18 17:36 2013-10-11 16:13 /u02/ggs/dirdat/aa003826 2013-08-17 16:22 2013-08-18 17:36 /u02/ggs/dirdat/aa003803 2013-06-28 17:53 2013-08-17 16:22 /u02/ggs/dirdat/aa002302 2013-06-21 14:23 2013-06-28 17:53 /u02/ggs/dirdat/aa002056 2013-06-17 21:51 2013-06-21 14:23 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 Current directory /u02/ggs Report file /u02/ggs/dirrpt/DPAA.rpt Parameter file /u02/ggs/dirprm/dpaa.prm Checkpoint file /u02/ggs/dirchk/DPAA.cpe Process file /u02/ggs/dirpcs/DPAA.pce Stdout file /u02/ggs/dirout/DPAA.out Error log /u02/ggs/ggserr.log GGSCI (hosta) 5> stop dpaa Sending STOP request to EXTRACT DPAA ... Request processed. GGSCI (hosta) 6> alter rmttrail /u02/ggs/dirdat/aa, extract dpaa, megabytes 1 RMTTRAIL altered. GGSCI (hosta) 7> info dpaa, detail EXTRACT DPAA Initialized 2014-07-25 17:30 Status STOPPED Checkpoint Lag 00:00:00 (updated 00:00:11 ago) Log Read Checkpoint File /u02/ggs/dirdat/aa019358 2014-08-01 14:12:34.000000 RBA 1397741 Target Extract Trails: Remote Trail Name Seqno RBA Max MB /u02/ggs/dirdat/aa 5341 38129829 1 --->注意此处的1M,此时是改之后。 Extract Source Begin End /u02/ggs/dirdat/aa019358 * Initialized * 2014-08-01 14:12 /u02/ggs/dirdat/aa018965 2014-07-25 16:14 2014-07-25 16:37 /u02/ggs/dirdat/aa018965 2014-07-25 12:20 2014-07-25 16:14 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-25 12:20 2014-07-25 12:20 /u02/ggs/dirdat/aa018960 2014-07-04 18:17 2014-07-25 12:20 /u02/ggs/dirdat/aa017864 2014-06-30 18:32 2014-07-04 18:17 /u02/ggs/dirdat/aa017531 2014-06-06 10:01 2014-06-30 18:32 /u02/ggs/dirdat/aa016295 2014-06-06 10:01 2014-06-06 10:01 /u02/ggs/dirdat/aa016295 2014-06-06 10:01 2014-06-06 10:01 /u02/ggs/dirdat/aa016295 2014-06-01 08:39 2014-06-06 10:01 /u02/ggs/dirdat/aa016049 2014-05-02 10:06 2014-06-01 08:39 /u02/ggs/dirdat/aa014617 2014-04-11 02:49 2014-05-02 10:06 /u02/ggs/dirdat/aa013640 2014-03-29 09:01 2014-04-11 02:49 /u02/ggs/dirdat/aa013090 2014-03-18 22:12 2014-03-29 09:01 /u02/ggs/dirdat/aa012599 2014-01-20 20:22 2014-03-18 22:12 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-20 20:22 2014-01-20 20:22 /u02/ggs/dirdat/aa010415 2014-01-03 18:59 2014-01-20 20:22 /u02/ggs/dirdat/aa009782 2013-12-02 10:21 2014-01-03 18:59 /u02/ggs/dirdat/aa008290 2013-12-02 10:21 2013-12-02 10:21 /u02/ggs/dirdat/aa008290 2013-12-02 10:21 2013-12-02 10:21 /u02/ggs/dirdat/aa008290 2013-12-02 10:21 2013-12-02 10:21 /u02/ggs/dirdat/aa008290 2013-12-02 10:21 2013-12-02 10:21 /u02/ggs/dirdat/aa008290 2013-10-26 07:26 2013-12-02 10:21 /u02/ggs/dirdat/aa006549 2013-10-11 16:13 2013-10-26 07:26 /u02/ggs/dirdat/aa005885 2013-08-18 17:36 2013-10-11 16:13 /u02/ggs/dirdat/aa003826 2013-08-17 16:22 2013-08-18 17:36 /u02/ggs/dirdat/aa003803 2013-06-28 17:53 2013-08-17 16:22 /u02/ggs/dirdat/aa002302 2013-06-21 14:23 2013-06-28 17:53 /u02/ggs/dirdat/aa002056 2013-06-17 21:51 2013-06-21 14:23 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 /u02/ggs/dirdat/aa001918 2013-06-17 21:51 2013-06-17 21:51 Current directory /u02/ggs Report file /u02/ggs/dirrpt/DPAA.rpt Parameter file /u02/ggs/dirprm/dpaa.prm Checkpoint file /u02/ggs/dirchk/DPAA.cpe Process file /u02/ggs/dirpcs/DPAA.pce Stdout file /u02/ggs/dirout/DPAA.out Error log /u02/ggs/ggserr.log GGSCI (hosta) 8> info dpaa,showch EXTRACT DPAA Initialized 2014-07-25 17:30 Status STOPPED Checkpoint Lag 00:00:00 (updated 00:00:24 ago) Log Read Checkpoint File /u02/ggs/dirdat/aa019358 2014-08-01 14:12:34.000000 RBA 1397741 Current Checkpoint Detail: Read Checkpoint #1 GGS Log Trail Startup Checkpoint (starting position in the data source): Sequence #: 18965 RBA: 36113095 Timestamp: 2014-07-25 16:37:28.000000 Extract Trail: /u02/ggs/dirdat/aa Current Checkpoint (position of last record read in the data source): Sequence #: 19358 RBA: 1397741 Timestamp: 2014-08-01 14:12:34.000000 Extract Trail: /u02/ggs/dirdat/aa Write Checkpoint #1 GGS Log Trail Current Checkpoint (current write position): Sequence #: 5341 RBA: 38129829 Timestamp: 2014-08-01 14:12:51.485592 Extract Trail: /u02/ggs/dirdat/aa Header: Version = 2 Record Source = U Type = 1 # Input Checkpoints = 1 # Output Checkpoints = 1 File Information: Block Size = 2048 Max Blocks = 100 Record Length = 2048 Current Offset = 0 Configuration: Data Source = 0 Transaction Integrity = 1 Task Type = 0 Status: Start Time = 2014-07-25 17:30:55 Last Update Time = 2014-08-01 14:12:45 Stop Status = G Last Result = 400 GGSCI (hosta) 9> start dpaa Sending START request to MANAGER ... EXTRACT DPAA starting GGSCI (hosta) 10> exit
之后,在目的端上,trail文件生成如下:
[oracle@hostb dirdat]$ ls -lrt
total 95832
-rw-rw-rw- 1 oracle oinstall 49999851 Aug 1 12:41 aa005340
-rw-rw-rw- 1 oracle oinstall 38129829 Aug 1 14:16 aa005341
-rw-rw-rw- 1 oracle oinstall 999951 Aug 1 14:16 aa005342
-rw-rw-rw- 1 oracle oinstall 999046 Aug 1 14:18 aa005343
-rw-rw-rw- 1 oracle oinstall 998338 Aug 1 14:19 aa005344
-rw-rw-rw- 1 oracle oinstall 999930 Aug 1 14:20 aa005345
-rw-rw-rw- 1 oracle oinstall 998526 Aug 1 14:22 aa005346
-rw-rw-rw- 1 oracle oinstall 999772 Aug 1 14:23 aa005347
之后,在源头上,tail -f MGR.rpt
2014-08-01 14:20:51 INFO OGG-00957 Purged old extract file /u02/ggs/dirdat/aa005341, applying UseCheckPoints purge rule: Oldest Chkpt Seqno 5347 > 5341.
2014-08-01 14:20:51 INFO OGG-00957 Purged old extract file /u02/ggs/dirdat/aa005342, applying UseCheckPoints purge rule: Oldest Chkpt Seqno 5347 > 5342.
2014-08-01 14:20:51 INFO OGG-00957 Purged old extract file /u02/ggs/dirdat/aa005343, applying UseCheckPoints purge rule: Oldest Chkpt Seqno 5347 > 5343.
2014-08-01 14:20:51 INFO OGG-00957 Purged old extract file /u02/ggs/dirdat/aa005344, applying UseCheckPoints purge rule: Oldest Chkpt Seqno 5347 > 5344.
2014-08-01 14:20:51 INFO OGG-00957 Purged old extract file /u02/ggs/dirdat/aa005345, applying UseCheckPoints purge rule: Oldest Chkpt Seqno 5347 > 5345.
2014-08-01 14:20:51 INFO OGG-00957 Purged old extract file /u02/ggs/dirdat/aa005346, applying UseCheckPoints purge rule: Oldest Chkpt Seqno 5347 > 5346.
也许有人有疑问:在目的端上aa005346文件的最后写入时间是Aug 1 14:22,而看MGR.rpt,
2014-08-01 14:20:51 INFO OGG-00957 Purged old extract file /u02/ggs/dirdat/aa005346
这是因为,目的端的os时间比北京时间快而已。
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