搭建Oracle 到Oracle 的GoldenGate 单向复制测试环境
搭建Oracle 到Oracle 的GoldenGate 单向复制测试环境
测试环境:
OS: RedHat 5.4 64bit
DB: Oracle 11.2.0.3 64bit
示例采用GoldenGate典型的配置:
在Source端,配置一个管理进程, 添加一个Extract进程,添加一个本地队列路径,定义一个远端的接收队列路径。
在Target端,配置一个管理进程和添加一个Replicat进程,指定一个应用队列,即抽取进程定义的远端队列。
GoldenGate单向表DML同步
Oracle GoldenGate 系列:Extract 进程的恢复原理
Oracle GoldenGate安装配置
Oracle goldengate的OGG-01004 OGG-1296错误
Oracle GoldenGate快速入门教程:基本概念和配置
搭建一个Oracle到Oracle的GoldenGate双向复制环境
一.安装GG 软件
1.1 OS 和 DB 版本
[root@gg2 ~]# uname -a
Linux gg2 2.6.18-164.el5xen #1 SMP Tue Aug18 15:59:52 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
[root@gg2 ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.4(Tikanga)
SQL> select * from v$version whererownum=1;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise EditionRelease 11.2.0.3.0 - 64bit Production
1.2 安装GG
在source database 和 target database 都执行如下操作:
[root@gg2 ~]# su - oracle
gg2:/home/oracle> mkdir /u01/ggate
gg2:/home/oracle> cd /u01
gg2:/u01> ls
app ggate
fbo_ggs_Linux_x64_ora11g_64bit.tar OGG_WinUnix_Rel_Notes_11.1.1.1.0.pdf
fbo_ggs_Linux_x64_ora11g_64bit.zip README.txt
gg2:/u01> tar xvffbo_ggs_Linux_x64_ora11g_64bit.tar -C /u01/ggate
1.3 添加环境变量
在/home/oracle/.bash_profile文件里添加如下内容:
export PATH=/u01/ggate:$PATH
exportLD_LIBRARY_PATH=/u01/ggate:$LD_LIBRARY_PATH
export GGATE=/u01/ggate
注意我这里的GG 和Oracle 使用的是相同的用户,所以把GG 的变量加上就可以了。加载刚刚设置的环境变量:
gg2:/home/oracle> source/home/oracle/.bash_profile
1.4 使用ggsci工具,创建必要的目录
gg1:/u01/ggate> ggsci
--调用ggsci 工具
Oracle GoldenGate Command Interpreter forOracle
Version 11.1.1.1OGGCORE_11.1.1_PLATFORMS_110421.2040
Linux, x64, 64bit (optimized), Oracle 11gon Apr 21 2011 22:42:14
Copyright (C) 1995, 2011, Oracle and/or itsaffiliates. All rights reserved.
GGSCI (gg1) 1> create subdirs
--使用ggsci 工具创建目录
Creating subdirectories under currentdirectory /u01/ggate
Parameter files /u01/ggate/dirprm: created
Report files /u01/ggate/dirrpt: created
Checkpoint files /u01/ggate/dirchk: created
Process status files /u01/ggate/dirpcs: created
SQL script files /u01/ggate/dirsql: created
Database definitions files /u01/ggate/dirdef: created
Extract data files /u01/ggate/dirdat: created
Temporary files /u01/ggate/dirtmp: created
Veridata files /u01/ggate/dirver: created
Veridata Lock files /u01/ggate/dirver/lock: created
Veridata Out-Of-Sync files /u01/ggate/dirver/oos: created
Veridata Out-Of-Sync XML files/u01/ggate/dirver/oosxml: created
Veridata Parameter files /u01/ggate/dirver/params: created
Veridata Report files /u01/ggate/dirver/report: created
Veridata Status files /u01/ggate/dirver/status: created
Veridata Trace files /u01/ggate/dirver/trace: created
Stdout files /u01/ggate/dirout: created
GGSCI (gg1) 2>
以上就是GG 的安装,在source 和target database 都执行。
二.配置Source database
GoldenGate通过抓取源端数据库重做日志进行分析,将获取的数据应用到目标端,实现数据同步。因此,源数据库需要必须处于归档模式,并启用附加日志和强制日志。
2.1 归档模式、附加日志、强制日志
--查看
SQL> select log_mode,supplemental_log_data_min,force_logging from v$database;
LOG_MODE SUPPLEME FOR
------------ -------- ---
ARCHIVELOG NO NO
--修改
(1)archivelog
SQL>shutdown immediate
SQL>startup mount
SQL>alter database archivelog;
SQL>alter database open;
(2) force logging
SQL>alterdatabase force logging;
(3)supplemental log data
SQL>alterdatabase add supplemental log data;
2.2 Oracle 9i的_LOG_PARALLELISM参数
如果是Oracle 9i的数据库,还需要将_LOG_PARALLELISM 参��设置为1. 因为GG 不支持该值超过1.
If using OracleGoldenGate for an Oracle 9i source database, set the _LOG_PARALLELISMparameter to 1. Oracle GoldenGate does not support values higher than 1.
2.3 启用DDL 支持
GG虽然支持DDL,但是也是有限制的,GG 支持DDL 也是通过创建一些table 来保存这些DDL 的信息,关于这些table 的具体说明,在如下链接的第二小节:启用GG 对DDL 操作的支持有详细说明:
对于这些存放DDL 信息表的管理的理论支持,参考如下链接的第四小结:Managing theOracle DDL replication environment。
这块的测试内容会另篇Blog进行测试。
2.3.1 禁用Recycle Bin
如果启用DDL 支持,必须关闭recycle bin。官网的解释如下:
If the recyclebin is enabled, the Oracle GoldenGate DDL trigger session receives implicitrecycle bin DDL operations that cause the trigger to fail.
Oracle 11g:
SQL> alter system set recyclebin=offscope=spfile;
System altered.
如果数据库是10g,需要关闭recyclebin并重启;或者手工purge recyclebin。
2.3.2 创建存放DDL 信息的user并赋权
SQL> create user ggate identified by ggate default tablespace users temporary tablespace temp;
User created.
SQL> grant connect,resource to ggate;
Grant succeeded.
SQL> grant execute on utl_file to ggate;
Grant succeeded.
退出所有使用Oracle 的session,然后使用SYSDBA权限的用户执行如下脚本:
gg1:/u01/ggate> echo $GGATE
/u01/ggate
--进入GG的目录,然后调用脚本:
gg1:/home/oracle> cd $GGATE
gg1:/u01/ggate> sqlplus / as sysdba;
SQL*Plus: Release 11.2.0.3.0 Production onTue Nov 8 19:41:58 2011
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise EditionRelease 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Miningand Real Application Testing options
--脚本1:
SQL> @marker_setup.sql;
Marker setup script
You will be prompted for the name of aschema for the GoldenGate database objects.
NOTE: The schema must be created prior torunning this script.
NOTE: Stop all DDL replication beforestarting this installation.
--输入我们之前创建的用户名:
Enter GoldenGate schema name:ggate
Marker setup table script complete, runningverification script...
Please enter the name of a schema for theGoldenGate database objects:
Setting schema name to GGATE
MARKER TABLE
-------------------------------
OK
MARKER SEQUENCE
-------------------------------
OK
Script complete.
--脚本2:
SQL> @ddl_setup.sql;
GoldenGate DDL Replication setup script
Verifying that current user has privilegesto install DDL Replication...
You will be prompted for the name of aschema for the GoldenGate database objects.
NOTE: For an Oracle 10g source, the systemrecycle bin must be disabled. For Oracle 11g and later, it can be enabled.
--注意这里提示我们在10g里,必须关闭recycle bin,在11g以后的版本,可以不用关闭。
NOTE: The schema must be created prior torunning this script.
NOTE: Stop all DDL replication beforestarting this installation.
--提示输入GG的用户:
Enter GoldenGate schema name:ggate
You will be prompted for the mode ofinstallation.
To install or reinstall DDL replication,enter INITIALSETUP
To upgrade DDL replication, enter NORMAL
--这里让我们选择安装模式: install 和 reinstall 选择INITIALSETUP
Enter mode of installation:INITIALSETUP
Working, please wait ...
Spooling to file ddl_setup_spool.txt
Checking for sessions that are holdinglocks on Oracle Golden Gate metadata tables ...
Check complete.
Using GGATE as a GoldenGate schema name,INITIALSETUP as a mode of installation.
Working, please wait ...
DDL replication setup script complete,running verification script...
Please enter the name of a schema for theGoldenGate database objects:
Setting schema name to GGATE
DDLORA_GETTABLESPACESIZE STATUS:
……
STATUS OF DDL REPLICATION
-------------------------------------------------------------------------------------------------------
SUCCESSFUL installation of DDL Replicationsoftware components
Script complete.
--脚本3:
SQL> @role_setup.sql;
GGS Role setup script
This script will drop and recreate the roleGGS_GGSUSER_ROLE
To use a different role name, quit thisscript and then edit the params.sql script to change the gg_role parameter tothe preferred name. (Do not run the script.)
You will be prompted for the name of aschema for the GoldenGate database objects.
NOTE: The schema must be created prior torunning this script.
NOTE: Stop all DDL replication beforestarting this installation.
--同样输入GG用户名:
Enter GoldenGate schema name:ggate
Wrote file role_setup_set.txt
PL/SQL procedure successfully completed.
Role setup script complete
Grant this role to each user assigned tothe Extract, GGSCI, and Manager processes, by using the following SQL command:
--这里提示我们赋权给相关的用户:
GRANT GGS_GGSUSER_ROLE TO<loggedUser>
where <loggedUser> is the userassigned to the GoldenGate processes.
--脚本4:赋权
SQL> grant GGS_GGSUSER_ROLE to ggate;
Grant succeeded.
--脚本5:
SQL> @ddl_enable.sql;
Trigger altered.
注意这里脚本创建的table都是使用默认的名称,当然也可以修改这些table的默认名,具体这块参考之前的文档中的说明。
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