logsource and ALO

Posted 2020-10-07 长城之上是千亿的星空，星空之上是不灭的守望。

1、首先配置sourcedb上的nfs服务,oggstd上挂载sourcedb的online redo和archive log的目录

 

 

oggsource上配置：

 vi /etc/exports 

/u01/app/oracle 134.178.1.182(rw,no_root_squash,no_all_squash,sync)

 

save and exit

 

exportfs -r

 

linux 6.X   

service nfs start 

service rpcbind start

 

 

oggstd:

mkdir /mnt/test

mount -t nfs oggsource:/u01/app/oracle /mnt/test

 

2、配置oggstd到sourcedb的tnsname解析

oggstd: netca

 

3、配置logmap方式

 

ext1:

EXTRACT ext1

EXTTRAIL ./dirdat/er

userid [email protected], password goldengate

WILDCARDRESOLVE DYNAMIC

DYNAMICRESOLUTION

TRANLOGOPTIONS LOGSOURCE LINUX, PATHMAP /u01/app/oracle/oradata/sourcedb /mnt/test/oradata/sourcedb

--TRANLOGOPTIONS LOGSOURCE LINUX, PATHMAP /u01/app/oracle/oradata/sourcedb /mnt/test/oradata/sourcedb PATHMAP /u01/app/oracle/oradata/sourcedb/archdata /mnt/test/oradata/sourcedb/archdata

 

TRANLOGOPTIONS ALTARCHIVELOGDEST /mnt/test/oradata/sourcedb/archdata

table scott.*

 

 

dblogin userid [email protected], password goldengate

 

ADD EXTRACT ext1, TRANLOG, BEGIN NOW

ADD EXTTRAIL ./dirdat/er, EXTRACT ext1, MEGABYTES 10

 

几个注意点：

1、要求该机器上的字节存储顺序（Endian）和源库保持一致,32位和64位也保持一致；

2、手册上描述同时可以在PATHMAP中配置archivelog，但是测试下来貌似不行，我想这样配置：

TRANLOGOPTIONS LOGSOURCE LINUX, PATHMAP /u01/app/oracle/oradata/sourcedb /mnt/test/oradata/sourcedb, PATHMAP /u01/app/oracle/oradata/sourcedb/archdata /mnt/test/oradata/sourc

edb/archdata，

但是不行，所以借助ALTARCHIVELOGDEST；（有点类似于ALO）

3、LOGSOURCE - 设置的是源端操作系统，如：solaris->linux->solaris，借助中间机linux来抽取和pump trail到目标solais，这里设置LOGSOURCE SOLARIS

 

 

 

ALO模式：

（archivelog only模式）

上面的例子中只要改一下：

 

TRANLOGOPTIONS ARCHIVEDLOGONLY

TRANLOGOPTIONS ALTARCHIVELOGDEST PRIMARY /mnt/test/oradata/sourcedb/archdata

TRANLOGOPTIONS ALTARCHIVEDLOGFORMAT %t_%s_%r.dbf

FETCHOPTIONS, NOUSESNAPSHOT, NOUSELATESTVERSION, MISSINGROW REPORT

STATOPTIONS REPORTFETCH

table scott.*

 

具体参考《Oracle_GoldenGate_Best_Practices_-_Extracting_from_Oracle_Archive_log_files__ALO_Mode__V3.1_ID_1358342.1.pdf》