背景描述：
有時候OGG進程同步出現問題，症狀某些進程起不來，而且問題一時半會兒解決不了。
最簡單的辦法是：用數據泵初始化數據，OGG進程重建。
1.查看源端、目的端的進程狀態。 （作者OGG進程是正常的，假設進程是 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 進程，以外的所有ogg進程。
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. 檢查源端、目的端 除 mgr 進程，以外的所有ogg進程的進程狀態是否是 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管理用戶連上數據庫，刪掉除 mgr 進程，以外的所有ogg進程。
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. 檢查ogg進程狀態。
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. 清除參數 (注意刪除文件的時候，不要多刪其他無關進程文件)
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,至此舊OGG進程清除完畢。
以下是重新創建相關的ogg進程 ：
1. 查看 mgr 進程狀態，確保為 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 參數配置
源端：
GGSCI (11g) 3> view param mgr
port 7809
目的端：
GGSCI (11g) 3> view param mgr
port 7809
3. 創建ext進程，tail文件，data_pump進程
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 -- 創建源trail文件
EXTTRAIL added.
GGSCI (11g) 13> add extract dpea, EXTTRAILSOURCE /home/oracle/ogg/dirdat/la -- 創建data_pump進程
EXTRACT added.
GGSCI (11g) 14> add rmttrail /home/oracle/ogg/dirdat/ra, ext dpea, MEGABYTES 20 --創建目標端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文件添加內容顯示如下
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文件添加內容顯示如下
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;
參數說明：
passthru表示本進程是一個傳輸進程data pump，無需跟數據庫交互，只需要搬運數據即可；
因為data pump要傳輸數據到目標，所以需要配置rmthost和rmttrail指定目標主機和隊列信息
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. 創建目標數據庫的replicate進程
目的端：
GGSCI (11g) 6> add rep repa, exttrail /home/oracle/ogg/dirdat/ra, nodbcheckpoint
REPLICAT added.
參數說明：
repa為進程名，一般為rep開頭表示是replicat進程，后面可以加1-2位字符標識，一般與ext進程對應；
exttrail表示要抽取的數據隊列，注意是目標端的隊列位置；
nodbcheckpoint表示不使用數據庫檢查點。
GGSCI (11g) 17> edit param repa -- repa文件添加內容顯示如下
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數據測試
源端：
SQL> select * from oggdemo;
ID
----------
1
2
SQL> insert into oggdemo values(3);
1 row created.
SQL> commit;
Commit complete.
目標端：
SQL> select * from oggdemo;
ID
----------
1
2
SQL> select * from oggdemo;
ID
----------
1
2
3
ok，至此數據同步成功。 轉載請標明出處。