标签：goldengate升级 ogg升级 ogg replicat升级
要升级replicat端的原因为：目标端OGG软件版本与源端OGG软件版本不同，在实际生产应用中，经常发现replicat端事务丢失的情况，所以，需要将目标端的OGG软件升级为与源端OGG相同软件版本。
源端OGG版本11.2.1.0.1
目标端OGG版本11.1.1.1.2
升级前，为了解决源端、目标端OGG版本不一致不能正常同步的问题，在源端抽取Tail file格式时，加了format release 11.1的格式转换命令，在extract与data pump进程中均配置，其配置方式如下：
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EXTTRAIL ./dirdat/tr, format release 11.1 |
将目标端OGG版本从11.1.0.2升级到与源端一致的11.2.0.1版本
GGSCI>stop exttr
GGSCI>stop dpetr
GGSCI>stop reptr
GGSCI>stop mgr
因为在extract与datadump进程中都配置有formatrelease 11.1关键字，在目标端升级后，该配置需要取消，但是，取消该配置，并不只是从配置文件中删除这么简单的事，还需要对进程做ETROLLOVER操作，否则进程启动时，会报如下错误：
ERROR OGG-01416 File ./dirdat/tr000008, with format RELEASE 10.4/11.1, does not match
current format specification of RELEASE 11.2.Modify the parameter file to specify format RELEASE 10.4/11.1
or issueETROLLOVER prior to restart.
操作方法：在OGG中以edit paramsextract_name和edit params datadump_name的方式进入进行修改（具体操作：略）。
因为extract与datadump都修改了format release信息，所以，都需要做ETROLLOVER操作
GGSCI>alter extract exttrETROLLOVER
GGSCI>alter extract dpetrETROLLOVER
因为源端的extract-exttr进程执行ETROLLOVER操作后，进程的extseqno和extrba号被重置至下一个extseqno号的第0号extrba，而datapump并不知道extract进程发生了这个变化，仍然守望在extract ETROLLOVER前的extseqno和extrba号上，永远也等不到这个extseqno上有新的RBA变化，造成就无法将extract新抽取到的数据，传递到目标端去。
所以，在extract进程ETROLLOVER后，需要使用“Alterextract group_name EXTSEQNO X, EXTRBA 0”的命令，重置checkpoint位置，datadump进程才能正常的将数据继续传递到远端。
3.5.1 记录下exttr进程ETROLLOVER后的extseqno和extrba号
GGSCI> info exttr, detail
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GGSCI (server1) 140> info exttr, detail
EXTRACT EXTTR Initialized 2015-01-30 13:02 Status STOPPED Checkpoint Lag 00:00:00 (updated 00:00:27 ago) Log Read Checkpoint Oracle Redo Logs 2015-01-30 13:18:27 Seqno 365, RBA 17822208 SCN 0.17726669 (17726669)
Target Extract Trails:
Remote Trail Name Seqno RBA Max MB
./dirdat/tr 4 0 100
Extract Source Begin End
…… |
3.5.2 修改datadump进程的extseqno和extrba号
GGSCI>Alter extract dpetr EXTSEQNO 4,EXTRBA 0
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GGSCI (server1) 160> info dpetr, detail EXTRACT DPETR Initialized 2015-01-30 13:03 Status STOPPED Checkpoint Lag 00:00:00 (updated 00:02:10 ago) Log Read Checkpoint File ./dirdat/tr000003 2015-01-30 13:18:18.000000 RBA 48953966 Target Extract Trails:
Remote Trail Name Seqno RBA Max MB
./dirdat/tr 4 0 100
…… |
#cp –ra /u01/ogg /u01/ogg_backup
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GGSCI (server2) 1> info reptr, showch
REPLICAT REPTR Last Started 2015-01-30 13:03 Status STOPPED Checkpoint Lag 00:00:00 (updated 00:10:36 ago) Log Read Checkpoint File ./dirdat/tr000003 2015-01-30 13:18:16.296427 RBA 48953996
Current Checkpoint Detail:
Read Checkpoint #1
GGS Log Trail
Startup Checkpoint (starting position in the data source): Sequence #: 0 RBA: 0 Timestamp: Not Available Extract Trail: ./dirdat/tr
Current Checkpoint (position of last record read in the data source): Sequence #: 3 RBA: 48953996 Timestamp: 2015-01-30 13:18:16.296427 Extract Trail: ./dirdat/tr
…… |
Current Checkpoint 为 Sequence #: 3 RBA: 48953996
$ cp ogg112101_fbo_ggs_Linux_x64_ora11g_64bit.zip/u01/ogg
fbo_ggs_Linux_x64_ora11g_64bit.tar文件是旧版OGG安装时解压出来的tar文件，新版OGG软件unzip解压时，也会生成此文件，当然也可以使用unzip解压时的覆盖替代手工删除
$rm fbo_ggs_Linux_x64_ora11g_64bit.tar
$unzip ogg112101_fbo_ggs_Linux_x64_ora11g_64bit.zip
$tar xvf fbo_ggs_Linux_x64_ora11g_64bit.tar
$cd $OGG
[oracle@server2 u01]$ cd $OGG
[oracle@server2 ogg]$ ./ggsci
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Oracle GoldenGate Command Interpreter for Oracle Version 11.2.1.0.1 OGGCORE_11.2.1.0.1_PLATFORMS_120423.0230_FBO Linux, x64, 64bit (optimized), Oracle 11g on Apr 23 2012 08:32:14
Copyright (C) 1995, 2012, Oracle and/or its affiliates. All rights reserved.
GGSCI (server2) 1> |
从这里看到，OGG软件版本已经升级至11.2.1.0.1
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GGSCI (server2) 46> info reptr, detail
REPLICAT REPTR Last Started 2015-01-30 13:03 Status STOPPED Checkpoint Lag 00:00:00 (updated 00:12:58 ago) Log Read Checkpoint File ./dirdat/tr000003 2015-01-30 13:18:16.296427 RBA 48953996
Extract Source Begin End
./dirdat/tr000003 * Initialized * 2015-01-30 13:18 ./dirdat/tr000000 * Initialized * First Record
Current directory /u01/ogg
Report file /u01/ogg/dirrpt/REPTR.rpt Parameter file /u01/ogg/dirprm/reptr.prm Checkpoint file /u01/ogg/dirchk/REPTR.cpr Checkpoint table GOLDENGATE.CHECKPOINT_REPTR_01 Process file /u01/ogg/dirpcs/REPTR.pcr Stdout file /u01/ogg/dirout/REPTR.out Error log /u01/ogg/ggserr.log |
Current Checkpoint 跟升级前一样，仍为Sequence #: 3 RBA: 48953996，进一步证明升级成功。
（生产库环境此步可以跳过，因为生产库的表受业务的操作数据不断发生变化，本案例为创建一张专用用于测试升级的表进行测试）
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目标端 |
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SQL> select count(*) from goldengate.ogg_upg; COUNT(*) ---------- 2150000 |
SQL> select count(*) from goldengate.ogg_upg; COUNT(*) ---------- 2150000
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源端和目标端数据量一致。
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SQL> delete goldengate.ogg_upg where rownum <1000001; 1000000 rows deleted. SQL> commit; SQL> select count(*) from goldengate.ogg_upg; COUNT(*) ---------- 1150000 |
重建replicat进程的原因：ogg_11.1.1.1.2每条replicat进程只有CHECKPOINT一张表，而ogg_11.2.x.x.1每条replicat进程有CHECKPOINT,CHECKPOINT_LOX两张表，所以，如果在升级后，直接启动replicat进程，是无法启动的，会报如下错误：
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ERROR OGG-00665 OCI Error describe for query (status = 942-ORA-00942: table or view does not exist), SQL<SELECT a.current_dir, a.seqno, a.rba, a.audit_ts, a.log_csn, a.log_xid, a.log_cmplt_csn, a.log_cmplt_xids, b.log_cmplt_xids FROM GOLDENGATE.CHECKPOINT_REPTR_01 a LEFT JOIN GOLDENGATE.CHECKPOINT_REPTR_01_lox b ON a.group_name = b.group_name AND a.group_key = b.group_key AND a.log_cmplt_csn = b.log_cmplt_csn WHERE a.group_name = ‘REPTR‘ AND a.group_key = 2810015614>.
2015-01-28 05:12:59 ERROR OGG-01668 PROCESS ABENDING. |
提示表不存在，这张表是指：GOLDENGATE.CHECKPOINT_REPTR_01_lox表（CHECKPOINT_LOX表），重建replicat的最终目的是让在重建进程时，自动将两张checkpoint表都自动创建起来。
GGSCI>dblogin userid goldengate,password goldengate
GGSCI>delete replicat reptr
GGSCI>delete checkpointtable GOLDENGATE.CHECKPOINT_REPTR_01
GGSCI>dbloginuserid goldengate, password goldengate
GGSCI>add checkpointtable goldengate.checkpoint_reptr_01
GGSCI>add replicat reptr, exttrail ./dirdat/tr,checkpointtable goldengate.checkpoint_reptr_01
到这一步，replicat启动后，还是无法继续应用源端投递过来的trail的，因为源端的datapump进程做过ETROLLOVER了，所以需要手工修改replicat的sequence#和RBA号到与datadump进程的target extract trails中的seqno和RBA一致。
根据上面一步，查出的源端的datadump进程的remotetrail file的seqno号和RBA，决定replicat要更改的extseqno和extrba号
GGSCI (server2) 37> Alter replicat reptrEXTSEQNO 4, EXTRBA 0
GGSCI(server2) 27> info reptr, showch
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GGSCI (server2) 3> info reptr, showch
REPLICAT REPTR Initialized 2015-01-30 13:39 Status STOPPED Checkpoint Lag 00:00:00 (updated 00:00:07 ago) Log Read Checkpoint File ./dirdat/tr000004 First Record RBA 0
Current Checkpoint Detail:
Read Checkpoint #1
GGS Log Trail
Startup Checkpoint (starting position in the data source): Sequence #: 4 RBA: 0 Timestamp: Not Available Extract Trail: ./dirdat/tr
Current Checkpoint (position of last record read in the data source): Sequence #: 4 RBA: 0 Timestamp: Not Available Extract Trail: ./dirdat/tr …… |
Start checkpoint 的sequence#和RBA号已经通过手工，都定位到了源端ETROLLOVER后的状态
Current checkpoint的sequence#和RBA号已经通过手工，也都定位到了源端ETROLLOVER后的状态
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SQL>select * from goldengate.checkpoint_reptr_01; No rows selected
SQL>select * from goldengate.checkpoint_reptr_01_lox; |
这时，两个checkpoint表中的数据还是空的，待replicat启动运行后，进行状态信息就会写入到checkpoint表中
GGSCI>start mgr
GGSCI>start reptr
GGSCI>start dpetr
此步最重要的，是要验证在升级时间时，源端所做的操作能否同步到目标库中来。本案例在升级过程中，对goldengate.ogg_upg表删除了1000000行数据。
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源端 |
目标端 |
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SQL> select count(*) from goldengate.ogg_upg; COUNT(*) ---------- 2050000 |
SQL> select count(*) from goldengate.ogg_upg; COUNT(*) ---------- 2050000
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select * from goldengate.checkpoint_reptr_01 ------------------------------------------------- REPTR 2149948420 4 19280017 2015-01-30 13:55:59.368501 2015/1/30 13:36:43 2015/1/30 14:01:01 /u01/ogg 17929533 7.16.20512 17929533 7.16.20512 1 |
从上面两步看来，升级后replicat正常的，接着升级前的状态在同步数据。
本文作者：黎俊杰（网名：踩点），从事”系统架构、操作系统、存储设备、数据库、中间件、应用程序“六个层面系统性的性能优化工作
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标签：goldengate升级 ogg升级 ogg replicat升级
原文地址：http://blog.csdn.net/ljunjie82/article/details/43281499
