OGG 进程清除、重建

最新推荐文章于 2021-07-13 10:31:08 发布

转载最新推荐文章于 2021-07-13 10:31:08 发布 · 425 阅读

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原文链接：https://yq.aliyun.com/articles/566626

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#数据库

背景描述：
有时候OGG进程同步出现问题，症状某些进程起不来，而且问题一时半会儿解决不了。
最简单的办法是：用数据泵初始化数据，OGG进程重建。

1.查看源端、目的端的进程状态。（作者OGG进程是正常的，假设进程是 abend ）

源端：
GGSCI (11g) 1> info all

Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING DPEA 00:00:00 00:00:08
EXTRACT RUNNING EXTA 00:00:00 00:00:04

目的端：
GGSCI (11g) 1> info all

Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
REPLICAT RUNNING REPA 00:00:00 00:00:07

2. 停止源端、目的端除 mgr 进程，以外的所有ogg进程。

源端：

GGSCI (11g) 2> stop exta
Sending STOP request to EXTRACT EXTA ...
Request processed.

GGSCI (11g) 3> stop dpea
Sending STOP request to EXTRACT DPEA ...
Request processed.

目的端：

GGSCI (11g) 2> stop repa
Sending STOP request to REPLICAT REPA ...
Request processed.

3. 检查源端、目的端除 mgr 进程，以外的所有ogg进程的进程状态是否是 stop。

源端：

GGSCI (11g) 4> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT STOPPED DPEA 00:00:00 00:01:54
EXTRACT STOPPED EXTA 00:00:00 00:02:07

目的端：

GGSCI (11g) 3> info all

Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
REPLICAT STOPPED REPA 00:00:00 00:01:32

4. 用OGG管理用户连上数据库，删掉除 mgr 进程，以外的所有ogg进程。

源端：

GGSCI (11g) 5> dblogin userid goldengate,password goldengate
Successfully logged into database.

GGSCI (11g) 6> delete exta
Deleted EXTRACT EXTA.

GGSCI (11g) 7> delete dpea
Deleted EXTRACT DPEA.

目的端：

GGSCI (11g) 4> dblogin userid goldengate,password goldengate
Successfully logged into database.

GGSCI (11g) 5> delete repa
Deleted REPLICAT REPA.

5. 检查ogg进程状态。

源端：

GGSCI (11g) 8> info all

Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING

目的端：

GGSCI (11g) 6> info all

Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING

6. 清除参数 (注意删除文件的时候，不要多删其他无关进程文件)

源端：

[oracle@11g ogg]$ cd dirprm
[oracle@11g dirprm]$ pwd
/home/oracle/ogg/dirprm
[oracle@11g dirprm]$ ll
total 16
-rw-rw-rw-. 1 oracle oinstall 193 Nov 9 07:54 dpea.prm
-rw-rw-rw-. 1 oracle oinstall 206 Nov 9 07:53 exta.prm
-rwxr-x---. 1 oracle oinstall 53 Apr 23 2012 jagent.prm
-rw-rw-rw-. 1 oracle oinstall 10 Nov 9 03:52 mgr.prm
[oracle@11g dirprm]$ rm -rf dpea.prm exta.prm

目的端：

[oracle@11g ogg]$ cd dirprm
[oracle@11g dirprm]$ pwd
/home/oracle/ogg/dirprm
[oracle@11g dirprm]$ ll
total 12
-rwxr-x---. 1 oracle oinstall 53 Apr 23 2012 jagent.prm
-rw-rw-rw-. 1 oracle oinstall 10 Nov 9 03:53 mgr.prm
-rw-rw-rw-. 1 oracle oinstall 301 Nov 9 07:55 repa.prm
[oracle@11g dirprm]$ rm -rf repa.prm

7.清除 Trails 文件

源端：
[oracle@11g dirprm]$ cd ..
[oracle@11g ogg]$ cd dirdat
[oracle@11g dirdat]$ pwd
/home/oracle/ogg/dirdat
[oracle@11g dirdat]$ ll
total 20
-rw-rw-rw-. 1 oracle oinstall 1023 Nov 9 06:57 la000000
-rw-rw-rw-. 1 oracle oinstall 1336 Nov 9 07:55 la000001
-rw-rw-rw-. 1 oracle oinstall 1212 Feb 1 04:10 la000002
-rw-rw-rw-. 1 oracle oinstall 1082 Feb 2 03:21 la000003
-rw-rw-rw-. 1 oracle oinstall 1082 Feb 2 03:21 la000004
[oracle@11g dirdat]$ rm -rf la*

目的端：
[oracle@11g ogg]$ cd dirdat
[oracle@11g dirdat]$ pwd
/home/oracle/ogg/dirdat
[oracle@11g dirdat]$ ll
total 16
-rw-rw-rw-. 1 oracle oinstall 1370 Nov 9 07:56 ra000000
-rw-rw-rw-. 1 oracle oinstall 1335 Feb 1 04:09 ra000001
-rw-rw-rw-. 1 oracle oinstall 1235 Feb 2 03:21 ra000002
-rw-rw-rw-. 1 oracle oinstall 1265 Feb 2 03:21 ra000003
[oracle@11g dirdat]$ rm -rf ra*

ok,至此旧OGG进程清除完毕。

以下是重新创建相关的ogg进程：

1. 查看 mgr 进程状态，确保为 running

源端：

GGSCI (11g) 2> info all

Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING

目的端：

GGSCI (11g) 2> info all

Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING

2. 查看 mgr 参数配置

源端：

GGSCI (11g) 3> view param mgr
port 7809

目的端：

GGSCI (11g) 3> view param mgr
port 7809

3. 创建ext进程，tail文件，data_pump进程

源端：
GGSCI (11g) 11> add ext exta, tranlog, begin now
EXTRACT added.

GGSCI (11g) 12> add exttrail /home/oracle/ogg/dirdat/la, ext exta, MEGABYTES 20 -- 创建源trail文件
EXTTRAIL added.

GGSCI (11g) 13> add extract dpea, EXTTRAILSOURCE /home/oracle/ogg/dirdat/la -- 创建data_pump进程
EXTRACT added.

GGSCI (11g) 14> add rmttrail /home/oracle/ogg/dirdat/ra, ext dpea, MEGABYTES 20 --创建目标端trail文件
RMTTRAIL added.

GGSCI (11g) 15> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT STOPPED DPEA 00:00:00 00:02:48
EXTRACT STOPPED EXTA 00:00:00 00:09:36

GGSCI (11g) 17> edit param exta --exta文件添加内容显示如下

GGSCI (11g) 35> view param exta

EXTRACT exta
setenv (NLS_LANG = AMERICAN_AMERICA.ZHS16GBK )
setenv (ORACLE_SID = orcl)
USERID goldengate, PASSWORD goldengate
EXTTRAIL /home/oracle/ogg/dirdat/la
dynamicresolution
table oggdemo.oggdemo;

GGSCI (11g) 33> start exta
Sending START request to MANAGER ...
EXTRACT EXTA starting

GGSCI (11g) 34> info all

Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT STOPPED DPEA 00:00:00 01:40:39
EXTRACT RUNNING EXTA 01:47:26 00:00:01

GGSCI (11g) 36> edit param dpea --dpea文件添加内容显示如下

GGSCI (11g) 39> view param dpea

extract dpea
setenv (NLS_LANG = AMERICAN_AMERICA.ZHS16GBK )
passthru
rmthost 10.100.25.16,mgrport 7809, compress
rmttrail /home/oracle/ogg/dirdat/ra
dynamicresolution
table oggdemo.oggdemo;

参数说明：
passthru表示本进程是一个传输进程data pump，无需跟数据库交互，只需要搬运数据即可；
因为data pump要传输数据到目标，所以需要配置rmthost和rmttrail指定目标主机和队列信息

GGSCI (11g) 37> start dpea
Sending START request to MANAGER ...
EXTRACT DPEA starting

GGSCI (11g) 38> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING DPEA 00:00:00 00:00:00
EXTRACT RUNNING EXTA 00:00:00 00:00:04

4. 创建目标数据库的replicate进程

目的端：
GGSCI (11g) 6> add rep repa, exttrail /home/oracle/ogg/dirdat/ra, nodbcheckpoint
REPLICAT added.

参数说明：
repa为进程名，一般为rep开头表示是replicat进程，后面可以加1-2位字符标识，一般与ext进程对应；
exttrail表示要抽取的数据队列，注意是目标端的队列位置；
nodbcheckpoint表示不使用数据库检查点。

GGSCI (11g) 17> edit param repa -- repa文件添加内容显示如下

GGSCI (11g) 20> view param repa

replicat repa
setenv (NLS_LANG = AMERICAN_AMERICA.ZHS16GBK)
setenv (ORACLE_SID = orcl)
userid goldengate, password goldengate
reperror default,abend
discardfile /home/oracle/ogg/dirrpt/repa.dsc,append, megabytes 10
assumetargetdefs
dynamicresolution
map oggdemo.oggdemo, target oggdemo.oggdemo;

GGSCI (11g) 18> start repa
Sending START request to MANAGER ...
REPLICAT REPA starting

GGSCI (11g) 19> info all

Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
REPLICAT RUNNING REPA 00:00:00 00:00:01

5.DML数据测试

源端：

SQL> select * from oggdemo;
ID
----------
1
2

SQL> insert into oggdemo values(3);
1 row created.

SQL> commit;
Commit complete.

目标端：

SQL> select * from oggdemo;
ID
----------
1
2

SQL> select * from oggdemo;
ID
----------
1
2
3

ok，至此数据同步成功。转载请标明出处。