Goldengate实现OracleforOracle单向DDL操作同步
在http://lqding.blog.51cto.com/9123978/1695162 文章中我们实现了表的DML操作同步。
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我们做如下测试
在源端执行表的truncate
SQL> truncate table tcustmer; Table truncated.
在目的端,查看表数据
SQL> select count(*) from tcustmer; COUNT(*) ---------- 2
数据并没有同步
我们如何让Goldengate实现DDL操作的同步呢?
要想支持DDL同步,需要在源数据库上做些设置,使得可以跟踪DDL操作。包括如下内容Trigger、marker和history table,一个用户角色和其他各式各样的数据库对象。
首先要配置GLOBALS参数,告诉gg使用那个schema来存储DDL操作。
GGSCI (localhost.localdomain) 19> edit params ./GLOBALS -- GoldenGate GLOBALS parameter file -- GGSCHEMA GGDDL
2. 使用sqlplus 创建ggddl用户,并安装ddl支持
SQL> conn / as sysdba Connected. SQL> create user ggddl identified by ggddl ; User created. SQL> grant connect,resource to ggddl; Grant succeeded.
关闭数据回收站功能
SQL> ALTER SYSTEM SET RECYCLEBIN = OFF scope=spfile; System altered. SQL> startup force ORACLE instance started. Total System Global Area 835104768 bytes Fixed Size 2217952 bytes Variable Size 574621728 bytes Database Buffers 255852544 bytes Redo Buffers 2412544 bytes Database mounted. Database opened.
运行marker_setup.sql (ogg的安装目录,进入sqlplus)
[oracle@localhost ogg]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.1.0 Production on Fri Sep 11 19:58:40 2015 Copyright (c) 1982, 2009, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> @marker_setup.sql Marker setup script You will be prompted for the name of a schema for the Oracle GoldenGate database objects. NOTE: The schema must be created prior to running this script. NOTE: Stop all DDL replication before starting this installation. Enter Oracle GoldenGate schema name:GGDDL Marker setup table script complete, running verification script... Please enter the name of a schema for the GoldenGate database objects: Setting schema name to GGDDL MARKER TABLE ------------------------------- OK MARKER SEQUENCE ------------------------------- OK Script complete.
在弹出对话框输入GGSCHEMA的名称
运行ddl_setup.sql
SQL> @ddl_setup.sql
运行role_setup.sql
SQL> @role_setup.sql GGS Role setup script This script will drop and recreate the role GGS_GGSUSER_ROLE To use a different role name, quit this script and then edit the params.sql script to change the gg_role parameter to the preferred name. (Do not run the script.) You will be prompted for the name of a schema for the GoldenGate database objects. NOTE: The schema must be created prior to running this script. NOTE: Stop all DDL replication before starting this installation. Enter GoldenGate schema name:ggddl Wrote file role_setup_set.txt PL/SQL procedure successfully completed. Role setup script complete Grant this role to each user assigned to the Extract, GGSCI, and Manager processes, by using the following SQL command: GRANT GGS_GGSUSER_ROLE TOwhere is the user assigned to the GoldenGate processes.
创建好角色后,并不是要把这个角色赋予ggddl用户,而是要将该角色赋予Extract,Replicat等使用的schema 。
我们之前配置的是system用户
SQL> GRANT GGS_GGSUSER_ROLE TO system; Grant succeeded.
启用ddl,其实就是使trigger enable
SQL> @ddl_enable.sql Trigger altered.
关闭Manager,Extract,Replicat
源端
GGSCI (localhost.localdomain) 1> stop Extract eorakk GGSCI (localhost.localdomain) 5> stop mgr !
目的端
GGSCI (localhost.localdomain) 1> stop replicat rorakk Sending STOP request to REPLICAT RORAKK ... Request processed. GGSCI (localhost.localdomain) 2> stop manager
编辑Extract参数
GGSCI (localhost.localdomain) 5> edit params eorakk -- -- Change Capture parameter file to capture -- TCUSTMER and TCUSTORD Changes -- EXTRACT EORAKK USERID system, PASSWORD oracle RMTHOST 192.168.199.104, MGRPORT 7809 EXTTRAIL ./dirdat/KK DDL INCLUDE ALL TABLE SCOTT.TCUSTMER; TABLE SCOTT.TCUSTORD;
在原有基础上添加一行DDL INCLUDE ALL
编辑Replicat参数
GGSCI (localhost.localdomain) 4> edit params rorakk -- -- Change Delivery parameter file to apply -- TCUSTMER and TCUSTORD Changes -- REPLICAT RORAKK USERID system, PASSWORD oracle HANDLECOLLISIONS ASSUMETARGETDEFS DISCARDFILE ./dirrpt/RORAKK.DSC, PURGE DDL INCLUDE MAPPED MAP scott.tcustmer, TARGET scott.tcustmer; MAP scott.tcustord, TARGET scott.tcustord;
在原有基础上添加一行DDL INCLUDE MAPPED
启动Manager、Extract、Replicat
源端
GGSCI (localhost.localdomain) 6> start manager Manager started. GGSCI (localhost.localdomain) 7> start extract eorakk Sending START request to MANAGER ... EXTRACT EORAKK starting
目的端
GGSCI (localhost.localdomain) 5> start mgr Manager started. GGSCI (localhost.localdomain) 16> start replicat rorakk Sending START request to MANAGER ... REPLICAT RORAKK starting
验证数据
源端
SQL> truncate table tcustmer; Table truncated. SQL> desc tcustmer Name Null? Type ----------------------------------------- -------- ---------------------------- CUST_CODE NOT NULL VARCHAR2(4) NAME VARCHAR2(30) CITY VARCHAR2(20) STATE CHAR(2) SQL> alter table tcustmer add state_desc varchar2(30); Table altered.
目的端
SQL> select * from tcustmer; no rows selected SQL> desc tcustmer Name Null? Type ----------------------------------------- -------- ---------------------------- CUST_CODE NOT NULL VARCHAR2(4) NAME VARCHAR2(30) CITY VARCHAR2(20) STATE CHAR(2) STATE_DESC VARCHAR2(30)
数据已同步。
新闻标题:Goldengate实现OracleforOracle单向DDL操作同步
新闻来源:http://myzitong.com/article/pohpce.html