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ogg的安装配置 配置双向同步(含DDL)

时间:2015-03-01 16:57:42      阅读:234      评论:0      收藏:0      [点我收藏+]

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第一部分 先配置单向同步(含DDL)

一 源端安装GoldenGate

  1. 创建用户

创建目录

mkdir -p /opt/ogg

chmod -R 777 /opt/ogg

chown -R oracle:oinstall /opt/ogg

?

ogg用户????

useradd -g oinstall -G dba ggate

?

  1. 解压软件

  2. 设置环境变量

配置goldengate用户变量

su – ggate

export ORACLE_BASE=/u01/app/oracle

export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1

export ORACLE_SID=prm

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/u01/app/oracle/ggate

export GGATE=/opt/ogg

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib

export PATH=$PATH:$ORACLE_HOME/bin:$GGATE

  1. 安装GoldenGate

????图形化安装方法中,在software location部分选择环境变量中GGATE的值,不过要注意给GGATE目录适当的权限;

????Database Location部分就是ORACLE_HOME的值。

二 目标端安装GoldenGate

  1. 创建用户

创建目录

mkdir -p /opt/ogg

chmod -R 755 /opt/ogg

chown -R oracle:oinstall /opt/ogg

?

ogg用户????

useradd -g oinstall -G dba ggate

  1. 解压软件

  2. 设置环境变量

配置goldengate用户变量

su – ggate

export ORACLE_BASE=/u01/app/oracle

export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1

export ORACLE_SID=prm

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/u01/app/oracle/ggate

export GGATE=/opt/ogg

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib

export PATH=$PATH:$ORACLE_HOME/bin:$GGATE

  1. 安装GoldenGate

????图形化安装方法中,在software location部分选择环境变量中GGATE的值,不过要注意给GGATE目录适当的权限;

????Database Location部分就是ORACLE_HOME的值。

三 配置源端数据库

  1. 开启归档

开启归档

修改之前 创建参数文件做备份

?

create pfile=‘/home/oracle/initdemo.ora‘ from spfile;

alter system set log_archive_dest=‘/arch/prm‘ scope=spfile; --修改归档的路径

---alter system set db_recovery_file_dest=‘‘ scope=spfile; --关闭闪回

shutdown immediate;

startup mount;

alter database archivelog;

archive log list;

alter database open;

  1. 设置数据库force logging

实际生产应用中,最好同时打开ORACLE的强制日志模式,以防止源数据库因直接路径加载忽略redo生成而导致这部分数据无法同步:

SQL> select force_logging from v$database;

SQL> Alter database force logging;

?

  1. 开启最小附加日志(DDL的话好开启数据库级别)

Oracle数据库需要开启归档日志,并开启最小附加日志模式。

SQL> select supplemental_log_data_min from v$database; --查看是否开启了最小附加日志模式

SQL> alter database add supplemental log data; --开启最小附加日志模式

?

千万不要小看这步日志设置,其实在GoldenGate的配置中,这步是最容易出错的环节。如果开启DDL复制做冗灾备份,最好直接在数据库级别打开补全日志:

SQL> alter database add supplemental log data (primary key,unique,foreign key) columns;

检查一下,全是YES就OK了(整个数据库级别补全)

SQL> select supplemental_log_data_min,

supplemental_log_data_pk,supplemental_log_data_ui from v$database;

  1. 源库关闭回收站

SQL>?show?parameter?recyclebin??

SQL>?alter?system?set?recyclebin=off scope=spfile;

SQL>shutdown immediate;

SQL>startup;

SQL>?show?parameter?recyclebin

?

  1. UNDO设置

alter?system?set?undo_retention=86400;??

  1. 创建goldengate用户并且授权

创建表空间、用户、赋予dba权限

create tablespace ogg datafile ‘/u01/app/oracle/oradata/prm/ogg01.dbf‘ size 1024M;

create user ggate identified by ggate default tablespace ogg temporary tablespace temp;

grant connect,resource,unlimited tablespace to ggate;

grant connect,resource,dba to ggate;

grant execute on utl_file to ggate;

grant select any dictionary,select any table to ggate;

grant alter any table to ggate;

grant flashback any table to ggate;

grant execute on DBMS_FLASHBACK to ggate;

grant insert any table to ggate;

grant delete any table to ggate;

grant update any table to ggate;

?

运行DDL同步需要的脚本

cd $GGATE

@marker_setup.sql;

@ddl_setup.sql;

@role_setup.sql;

grant GGS_GGSUSER_ROLE to ggate;

@ddl_enable.sql;

?

安装性能优化包。

SQL> @?/rdbms/admin/dbmspool

?

ddl_pin将触发器用到的plsql包放进内存中

cd $GGATE??

SQL>?@ddl_pin?ggate

?

  1. 添加传输表【transdata】

光开启最小附加日志模式还不够,还需要打开表级的补全日志,可以在GoldenGate中使用add trandata命令强制重做日志记录主键值,以保证在目标端能成功复制:

GGSCI> dblogin userid ggate,password ggate --GoldenGate中登录OARCLE数据库

GGSCI>add trandata sender.* --表名可以使用通配符

GGSCI> add trandata coss3.per_test,nokey,cols(sampletime, objectid)

--无主键指定字段补全的示例

?

也可以在数据库中打开:

SQL> alter table <tablename> add supplemental log data (primary key) columns;

?

?

?

示例:

GGSCI(node1) 1> dblogin userid ogg,password oracle

GGSCI(node1) 2> add trandata SCOTT.DEPT

?

四 配置源端进程组

GGSCI(node1) 1> edit param mgr

(粘贴下面这段配置)

PORT 8839

--DYNAMICPORTLIST 8000-9000

--AUTOSTART ER *

AUTORESTART EXTRACT *,RETRIES 5,WAITMINUTES 3

PURGEOLDEXTRACTS ./dirdat/*,usecheckpoints, minkeepdays 3

--PURGEDDLHISTORY MINKEEPDAYS 3, MAXKEEPDAYS 5, FREQUENCYMINUTES 30

--PURGEMARKERHISTORY MINKEEPDAYS 3, MAXKEEPDAYS 5, FREQUENCYMINUTES 30

LAGREPORTHOURS 1

LAGINFOMINUTES 30

LAGCRITICALMINUTES 45

GGSCI?(node1)?>?edit?params?./GLOBALS??

GGSCHEMA?ggate

?

GGSCI(node1) 2> start mgr

Managerstarted.

GGSCI(node1) 3> info all

Program Status Group Lag at Chkpt Time Since Chkpt

MANAGER RUNNING

增加EXTRAIL

GGSCI(node1)> add extract extnd, tranlog, begin now

EXTRACT added.

?

修改EXTRAIL参数

GGSCI (GOLDENGATE1) 4> edit params extnd

EXTRACT extnd

SETENV (NLS_LANG = "AMERICAN_AMERICA.UTF8")

SETENV (ORACLE_HOME = "/u01/app/oracle/product/11.2.0/dbhome_1")

SETENV (ORACLE_SID = "prm")

USERID ggate, PASSWORD ggate

EXTTRAIL ./dirdat/nd

DISCARDFILE ./dirdat/extnd.dsc,APPEND,MEGABYTES 5

TRANLOGOPTIONS ALTARCHIVELOGDEST /arch/prm

TRANLOGOPTIONS ALTARCHIVEDLOGFORMAT %t_%s_%r.dbf

DDL INCLUDE ALL

DDLOPTIONS ADDTRANDATA

FETCHOPTIONS, USESNAPSHOT, NOUSELATESTVERSION, MISSINGROW REPORT

STATOPTIONS REPORTFETCH

WARNLONGTRANS 1H, CHECKINTERVAL 5M

TABLE sender.*;

?

添加该extract对应的trail文件,用来存储抽取的数据。单个文件大小设置为100MB

GGSCI(node1)> add exttrail ./dirdat/nd, extract extnd, megabytes 100

EXTTRAIL added.

增加PUMP

GGSCI(node1)>add extract dpend, exttrailsource ./dirdat/nd, begin now

EXTRACT added.

?

修改PUMP参数

GGSCI(node1)> edit params dpend

EXTRACT dpend

SETENV (NLS_LANG = "AMERICAN_AMERICA.UTF8")

USERID ggate, PASSWORD ggate

RMTHOST 192.168.80.166, MGRPORT 8809

RMTTRAIL ./dirdat/nd

DISCARDFILE ./dirdat/dpend.dsc,APPEND,MEGABYTES 5

TABLE sender.*;

?

添加RMTRAILS

GGSCI(node1)> add rmttrail ./dirdat/nd, extract dpend, megabytes 100

RMTTRAIL added.

五 配置目标数据库【含源端业务新增数据模拟】

创建表空间、用户、赋予dba权限

create tablespace ogg datafile ‘/u01/app/oracle/oradata/prm/ogg01.dbf‘ size 1024M;

create user ggate identified by ggate default tablespace ogg temporary tablespace temp;

grant connect,resource,unlimited tablespace to ggate;

grant connect,resource,dba to ggate;

grant execute on utl_file to ggate;

grant select any dictionary,select any table to ggate;

grant alter any table to ggate;

grant flashback any table to ggate;

grant execute on DBMS_FLASHBACK to ggate;

grant insert any table to ggate;

grant delete any table to ggate;

grant update any table to ggate;

?

运行DDL同步需要的脚本

@$GGATE/marker_setup.sql;

@$GGATE/ddl_setup.sql;

@$GGATE/role_setup.sql;

grant GGS_GGSUSER_ROLE to ggate;

@$GGATE/ddl_enable.sql;

?

安装性能优化包。

SQL> @?/rdbms/admin/dbmspool

?

ddl_pin将触发器用到的plsql包放进内存中??

SQL>?@ddl_pin?ggate

?

六 配置目标端进程组

GGSCI(node2) 1> edit param mgr

(粘贴下面这段配置)

PORT 8839

--DYNAMICPORTLIST 8000-9000

--AUTOSTART ER *

AUTORESTART EXTRACT *,RETRIES 5,WAITMINUTES 3

PURGEOLDEXTRACTS ./dirdat/*,usecheckpoints, minkeepdays 3

--PURGEDDLHISTORY MINKEEPDAYS 3, MAXKEEPDAYS 5, FREQUENCYMINUTES 30

--PURGEMARKERHISTORY MINKEEPDAYS 3, MAXKEEPDAYS 5, FREQUENCYMINUTES 30

LAGREPORTHOURS 1

LAGINFOMINUTES 30

LAGCRITICALMINUTES 45

GGSCI (node2)> edit params ./GLOBALS

GGSCHEMA ggate

CHECKPOINTTABLE ggate.chkpoint

需要先退出ggsci

GGSCI (node2)> dblogin userid ggate, password ggate

Successfully logged into database.

?

GGSCI (node2)> add checkpointtable ggate.chkpoint

Successfully created checkpoint table goldengate.chkpoint.

?

增加目标端REP

GGSCI (node2)> add replicat repnd, exttrail ./dirdat/nd, checkpointtable ggate.chkpoint

REPLICAT added.

?

修改REP参数

GGSCI (node2)> edit params repnd

REPLICAT repnd

ASSUMETARGETDEFS

USERID ggate, PASSWORD ggate

DISCARDFILE ./dirrpt/repnd.dsc,APPEND,MEGABYTES 5

DDL INCLUDE ALL

DDLOPTIONS REPORT

BATCHSQL

DBOPTIONS DEFERREFCONST

DBOPTIONS LOBWRITESIZE 102400

DDLERROR DEFAULT DISCARD RETRYOP MAXRETRIES 5 RETRYDELAY 20

MAP sender.* , TARGET sender.* ;

七 启动进程进行数据库同步

start?mgr?

start extnd

start dpend

?

start?mgr?

start repnd

?

八 数据同步测试

源数据库上创建数据

conn sender/oracle

create table t1 (id number CONSTRAINT id_nn NOT NULL,

name VARCHAR2(40),

PRIMARY KEY (id)

);

insert into t1 values (1,‘aaa‘);

insert into t1 values (2,‘bbb‘);

insert into t1 values (3,‘ccc‘);

insert into t1 values (4,‘ddd‘);

?

create table t2 (id number CONSTRAINT id_nm NOT NULL,

addr VARCHAR2(40),

PRIMARY KEY (id)

);

insert into t2 values (1,‘word‘);

insert into t2 values (2,‘now‘);

insert into t2 values (3,‘values‘);

insert into t2 values (4,‘beijing‘);

?

测试时使用语句

insert into t1 values (5,‘eee‘)

insert into t1 values (6,‘fff‘)

insert into t1 values (7,‘ggg‘)

?

create table t3 as select * from t1 where 1=0;

create table t4 as select * from t1;

alter table t2 rename to t4;

九 环境说明

十 各程序组配置名称及参数【成功后记录】

管理进程:mgr

参数:

GGSCI(node1) 1> edit param mgr

(粘贴下面这段配置)

PORT 8839

--DYNAMICPORTLIST 8000-9000

--AUTOSTART ER *

AUTORESTART EXTRACT *,RETRIES 5,WAITMINUTES 3

PURGEOLDEXTRACTS ./dirdat/*,usecheckpoints, minkeepdays 3

--PURGEDDLHISTORY MINKEEPDAYS 3, MAXKEEPDAYS 5, FREQUENCYMINUTES 30

--PURGEMARKERHISTORY MINKEEPDAYS 3, MAXKEEPDAYS 5, FREQUENCYMINUTES 30

LAGREPORTHOURS 1

LAGINFOMINUTES 30

LAGCRITICALMINUTES 45

?

GLOBALS:

GGSCI?(node1)?>?edit?params?./GLOBALS??

GGSCHEMA?ggate

?

?

抽取进程:extnd

参数:

增加EXTRAIL

GGSCI(node1)> add extract extnd, tranlog, begin now

EXTRACT added.

?

修改EXTRAIL参数

GGSCI (GOLDENGATE1) 4> edit params extnd

EXTRACT extnd

SETENV (NLS_LANG = "AMERICAN_AMERICA.UTF8")

SETENV (ORACLE_HOME = "/u01/app/oracle/product/11.2.0/dbhome_1")

SETENV (ORACLE_SID = "prm")

USERID ggate, PASSWORD ggate

EXTTRAIL ./dirdat/nd

DISCARDFILE ./dirdat/extnd.dsc,APPEND,MEGABYTES 5

TRANLOGOPTIONS ALTARCHIVELOGDEST /arch/prm

TRANLOGOPTIONS ALTARCHIVEDLOGFORMAT %t_%s_%r.dbf

DDL INCLUDE ALL

DDLOPTIONS ADDTRANDATA

FETCHOPTIONS, USESNAPSHOT, NOUSELATESTVERSION, MISSINGROW REPORT

STATOPTIONS REPORTFETCH

WARNLONGTRANS 1H, CHECKINTERVAL 5M

TABLE sender.*;

?

添加该extract对应的trail文件,用来存储抽取的数据。单个文件大小设置为100MB

GGSCI(node1)> add exttrail ./dirdat/nd, extract extnd, megabytes 100

EXTTRAIL added.

?

?

传输进程:dpend

参数:

增加PUMP

GGSCI(node1)>add extract dpend, exttrailsource ./dirdat/nd, begin now

EXTRACT added.

?

修改PUMP参数

GGSCI(node1)> edit params dpend

EXTRACT dpend

SETENV (NLS_LANG = "AMERICAN_AMERICA.UTF8")

USERID ggate, PASSWORD ggate

RMTHOST 192.168.80.166, MGRPORT 8809

RMTTRAIL ./dirdat/nd

DISCARDFILE ./dirdat/dpend.dsc,APPEND,MEGABYTES 5

TABLE sender.*;

?

添加RMTRAILS

GGSCI(node1)> add rmttrail ./dirdat/nd, extract dpend, megabytes 100

RMTTRAIL added.

管理进程:mgr

参数:

GGSCI(node2) 1> edit param mgr

(粘贴下面这段配置)

PORT 8839

--DYNAMICPORTLIST 8000-9000

--AUTOSTART ER *

AUTORESTART EXTRACT *,RETRIES 5,WAITMINUTES 3

PURGEOLDEXTRACTS ./dirdat/*,usecheckpoints, minkeepdays 3

--PURGEDDLHISTORY MINKEEPDAYS 3, MAXKEEPDAYS 5, FREQUENCYMINUTES 30

--PURGEMARKERHISTORY MINKEEPDAYS 3, MAXKEEPDAYS 5, FREQUENCYMINUTES 30

LAGREPORTHOURS 1

LAGINFOMINUTES 30

LAGCRITICALMINUTES 45

?

GLOBALS:

GGSCI (node2)> edit params ./GLOBALS

GGSCHEMA ggate

CHECKPOINTTABLE ggate.chkpoint

?

?

复制进程:repnd

参数:

增加目标端REP

GGSCI (node2)> add replicat repnd, exttrail ./dirdat/nd, checkpointtable ggate.chkpoint

REPLICAT added.

?

修改REP参数

GGSCI (node2)> edit params repnd

REPLICAT repnd

ASSUMETARGETDEFS

USERID ggate, PASSWORD ggate

DISCARDFILE ./dirrpt/repnd.dsc,APPEND,MEGABYTES 5

DDL INCLUDE ALL

DDLOPTIONS REPORT

BATCHSQL

DBOPTIONS DEFERREFCONST

DBOPTIONS LOBWRITESIZE 102400

DDLERROR DEFAULT DISCARD RETRYOP MAXRETRIES 5 RETRYDELAY 20

MAP sender.* , TARGET sender.* ;

第二部分配置双向同步(含DDL)

确认源库处于归档模式

????因为现源端数据库是之前目标端数据库rman初始化过来的,所以这部分忽略

确认源库为FORCE_LOGGIN

????因为现源端数据库是之前目标端数据库rman初始化过来的,所以这部分忽略

确认源库打开辅助日志

????因为现源端数据库是之前目标端数据库rman初始化过来的,所以这部分忽略

?

源库关闭回收站

????因为现源端数据库是之前目标端数据库rman初始化过来的,所以这部分忽略

保证字符集一致

????因为现源端数据库是之前目标端数据库rman初始化过来的,所以这部分忽略

UNDO设置

????因为现源端数据库是之前目标端数据库rman初始化过来的,所以这部分忽略

安装DDL_OBJETS

????因为现源端数据库是之前目标端数据库rman初始化过来的,所以这部分忽略

PURGEOLDEXTRACTS ./dirdat/*, USECHECKPOINTS, MINKEEPFILES 10

----这个之前配置过 忽略

PURGEOLDEXTRACTS ./dirdat/*, USECHECKPOINTS, MINKEEPFILES 10

----这个之前配置过 忽略

GGSCI (node1)> edit params ./GLOBALS

GGSCHEMA ggate

CHECKPOINTTABLE ggate.chkpoint

GGSCI (node1)>exit

GGSCI (node1)> dblogin userid ggate, password ggate

GGSCI (node1)> add checkpointtable ggate.chkpoint

GGSCI (node1)>exit

增加EXTRACT

add extract extd2, tranlog, begin now

?

修改配置:

GGSCI (node1)> edit params extd2

EXTRACT extd2

SETENV (NLS_LANG = "AMERICAN_AMERICA.UTF8")

SETENV (ORACLE_HOME = "/u01/app/oracle/product/11.2.0/dbhome_1")

SETENV (ORACLE_SID = "prm")

USERID ggate, PASSWORD ggate

TRANLOGOPTIONS EXCLUDEUSER ggate

IGNOREREPLICATES

EXTTRAIL ./dirdat/et

DISCARDFILE ./dirdat/extd2.dsc,APPEND,MEGABYTES 5

TRANLOGOPTIONS ALTARCHIVELOGDEST /arch/prm

TRANLOGOPTIONS ALTARCHIVEDLOGFORMAT %t_%s_%r.dbf

DDL INCLUDE ALL

DDLOPTIONS ADDTRANDATA

FETCHOPTIONS, USESNAPSHOT, NOUSELATESTVERSION, MISSINGROW REPORT

STATOPTIONS REPORTFETCH

WARNLONGTRANS 1H, CHECKINTERVAL 5M

TABLE sender.*;

?

添加该extract对应的trail文件,用来存储抽取的数据。单个文件大小设置为100MB

GGSCI (node2)> add exttrail ./dirdat/et,extract extd2,megabytes 100

GGSCI (node1)>edit param EXTND

TRANLOGOPTIONS?EXCLUDEUSER?ggate?

IGNOREREPLICATES

?

去掉以下两行 不然启动不起来

TRANLOGOPTIONS ALTARCHIVELOGDEST /arch/prm

TRANLOGOPTIONS ALTARCHIVEDLOGFORMAT %t_%s_%r.dbf

?

增加PUMP

GGSCI (node2)>add extract dpnd2, exttrailsource ./dirdat/et, begin now

?

修改配置:

GGSCI (node2)> edit params dpnd2

EXTRACT dpnd2

SETENV (NLS_LANG = "AMERICAN_AMERICA.UTF8")

USERID ggate, PASSWORD ggate

RMTHOST 192.168.80.160, MGRPORT 8809

RMTTRAIL ./dirdat/et

DISCARDFILE ./dirdat/dpnd2.dsc,APPEND,MEGABYTES 5

TABLE sender.*;

?

添加远程TRAIL文件:

GGSCI (node2)> add rmttrail ./dirdat/et, extract dpnd2, megabytes 100

增加目标端REP进程

GGSCI (node1)> add replicat repnd2, exttrail ./dirdat/et, checkpointtable ggate.chkpoint

?

?

修改配置参数:

GGSCI (node1)> edit params repnd2

REPLICAT repnd2

ASSUMETARGETDEFS

USERID ggate, PASSWORD ggate

DISCARDFILE ./dirrpt/repnd2.dsc,APPEND,MEGABYTES 5

DDL INCLUDE ALL

DDLOPTIONS REPORT

BATCHSQL

DBOPTIONS DEFERREFCONST

DBOPTIONS LOBWRITESIZE 102400

DDLERROR DEFAULT DISCARD RETRYOP MAXRETRIES 5 RETRYDELAY 20

MAP sender.* , TARGET sender.* ;

GGSCI (node2)>exit

GGSCI (node2)> dblogin userid ggate, password ggate

GGSCI (node2)> add trandata sender.*

GGSCI (node2)>exit

SQL>?select?current_scn?from?v$database;

1297690

停止两端所有近程

GGSCI (node1)> stop EXTND

GGSCI (node1)> stop DPEND

GGSCI (node1)> stop mgr

?

GGSCI (node2)> stop repnd

GGSCI (node2)> stop mgr

重启两端所有进程

node1:

start mgr

start EXTND

start DPEND

start repnd2,?aftercsn?1297690

?

?

node2:

start mgr

start repnd

strat extd2

start dpnd2

测试时使用语句

insert into t1 values (6,‘fff‘);

insert into t1 values (7,‘ggg‘);

insert into t1 values (7,‘hhh‘);

insert into t1 values (8,‘eee‘);

insert into t1 values (9,‘fff‘);

insert into t1 values (10,‘ggg‘);

?

create table t5 as select * from t1 where 1=0;

create table t4 as select * from t1;

conn / as sysdba

alter system switch logfile;

create tablespace test01 datafile ‘/u01/app/oracle/oradata/prm/test01.dbf‘ size 5m;

?

create table t6 as select * from t1;

alter table t6 rename to t7;

conn / as sysdba

alter system switch logfile;

drop tablespace test01 including contents and datafiles;

?

?

alter table t7 rename to t6;

?

?

十一 附件

?

GoldenGate的DDL同步只支持两边一致的数据库,限制条件较多(如不能进行字段映射、转换等),具体可以参考官方文档。DDL的抓取不是通过日志抓取来捕获的,而是通过触发器来实现,所以对源数据库的性能影响要比单纯的数据抓取要大很多,可谓屏弃了GoldenGate的优势。尽量不要使用GoldenGate的DDL复制功能,在大多数业务系统中,实际上不会有频繁的数据库结构变动,完全可以通过手工的方式进行维护。确实有大量DDL操作的环境,如果可以,还是推荐物理DG之类的替换方案;确实要使用GoldenGate的DDL复制,那么请详细参考官方文档的限制和说明。

--以上主要为个人意见,有不同看法的请无视

?

开启DDL复制的基本配置步骤为:

(1)关闭ORACLE的回收站功能。

(2)选择一个数据库schema存放支持DDL的GoldenGate对象,运行相应创建脚本。

(3)编辑globals参数文件。

(4)修改extl和repl的配置文件

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具体操作步骤:

(1)关闭数据库回收站:

SQL>alter system set recyclebin=off scope=both;

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(2)编辑globals参数文件:

GGSCI>edit param ./globals

添加以下内容后保存:

GGSCHEMA ddw --标明支持DDL的GG对象存放在哪个schema下

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(3)执行创建脚本:

首先需要命令行进入GG安装目录下,然后再运行sqlplus执行脚本,如果不进入目录下脚本执行会报错(应该是由于GG脚本中子脚本嵌套使用相对路径的问题所造成)。

SQL>@marker_setup.sql --提示输入目标schema

SQL>@ddl_setup.sql --提示输入目标schema,输入initialsetup最后输入yes

SQL>@role_setup.sql

SQL>grant GGS_GGSUSER_ROLE to ddw; --不进行该步赋权后面起进程会报错

SQL>@ddl_enable.sql --使触发器生效

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(4)修改提取进程和复制进程的配置文件,分别加入ddl include all属性。

此时repl必须指定assumetargetdefs属性,这表明只有两边数据库结构一致的情况下才可以启用DDL复制。另外,开启DDL同步不能再只映射单表了,对整个模式下的对象都有效。

加入DDL复制之后,数据复制的lag明显增加了。

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清除数据库中DDL复制的设置

在实际测试中,由于我在同一个数据库中进行映射,映射表结构不一致,导致进程报了一系列的错误。这个时候需要把通过脚本创建的GG对象中的数据清空,安装目录下只提供了清除对象的脚本,可以如下操作:

首先要求把所有的GG进程停掉,包括mgr进程

SQL>@ddl_disable.sql --首先使DDL触发器失效

SQL>@ddl_remove.sql

SQL>@marker_remove.sql

role_setup.sql没有对应的清除脚本,但是这块不影响配置信息的清除

然后重新再创建脚本。

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ogg的安装配置 配置双向同步(含DDL)

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原文地址:http://www.cnblogs.com/junnor/p/4307228.html

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