GoldenGate的安裝很簡單，下面一起來學習下GG的一些簡單配置。
GG軟件主要是通過抓取redo log 和 archive log 日誌的信息，然後傳輸到目標庫重做來實現數據的同步。
1.前提條件： 開啓歸檔日誌、force logging和supplemental 日誌
### 用以下命令查看歸檔日誌是否開啓 SQL> archive log list ##如果不是enable可以使用如下命令開啓歸檔日誌功能； SQL>shutdown immediate; SQL>startup mount; SQL>alter database archivelog; ##歸檔日誌需要在mount模式下開啓 ## 查看force logging 和 supplemental 日誌是否開啓 SQL> select name,open_mode,force_logging,supplemental_log_data_min from v$database; NAME OPEN_MODE FOR SUPPLEME --------- -------------------- --- -------- NODE1 READ WRITE NO NO SQL> alter database force logging; Database altered. SQL> select name,open_mode,force_logging,supplemental_log_data_min from v$database; NAME OPEN_MODE FOR SUPPLEME --------- -------------------- --- -------- NODE1 READ WRITE NO NO SQL> alter database force logging; Database altered. SQL> select name,open_mode,force_logging,supplemental_log_data_min from v$database; NAME OPEN_MODE FOR SUPPLEME --------- -------------------- --- -------- NODE1 READ WRITE YES YES
2.創建GG與Oracle交互的用戶ggadmin
SQL> create tablespace ggtb datafile '/paic/app/oracle/oradata/ggtb.dbf' size 100M autoextend off; Tablespace created. SQL> create user ggadmin identified by ggadmin default tablespace ggtb; User created. SQL> grant connect,resource,dba to ggadmin; Grant succeeded.
3.創建GG角色並授予給GG用戶。（注直接這個腳本必須到GG目錄下，不然可能不成功）
SQL> !pwd /paic/app/gg SQL> @role_setup GGS Role setup script This script will drop and recreate the role GGS_GGSUSER_ROLE To use a different role name, quit this script and then edit the params.sql script to change the gg_role parameter to the preferred name. (Do not run the script.) You will be prompted for the name of a schema for the GoldenGate database objects. NOTE: The schema must be created prior to running this script. NOTE: Stop all DDL replication before starting this installation. Enter GoldenGate schema name:ggadmin Wrote file role_setup_set.txt PL/SQL procedure successfully completed. Role setup script complete Grant this role to each user assigned to the Extract, GGSCI, and Manager processes, by using the following SQL command: GRANT GGS_GGSUSER_ROLE TO <loggedUser> where <loggedUser> is the user assigned to the GoldenGate processes. SQL> grant GGS_GGSUSER_ROLE to ggadmin; Grant succeeded.
在目標端和源端最好都配置。
4.在源端和目標端創建EXTRACT、DATAPUMP、REPLICAt對象並配置相關參數文件
#####################源端配置如下信息######################### 1)創建MGR參數文件 [oracle@node1 gg]$ ggsci GGSCI (node1) 1> edit params mgr ###配置如下信息： port 7809 2)配置全局參數文件 GGSCI (node1) 2> edit params ./GLOBALS ###配置如下信息： GGSCHEMA ggadmin 3)配置EXTRACT文件 GGSCI (node1) 3> edit params ext1 ###配置如下信息： extract ext1 userid ggadmin,password ggadmin exttrail /paic/app/gg/dirdat/ex table keeny.*; 4)配置DataPump參數文件 GGSCI (node1) 5> edit params dp1 ###配置如下信息： extract dp1 userid ggadmin,password ggadmin rmthost 192.168.1.152,mgrport 7809 rmttrail /paic/app/gg/dirdat/rt table keeny.*; #####################目標端配置如下信息######################### 1)創建MGR參數文件 [oracle@node1 gg]$ ggsci GGSCI (node1) 1> edit params mgr ###配置如下信息： port 7809 2)配置全局參數文件 GGSCI (node1) 2> edit params ./GLOBALS ###配置如下信息： GGSCHEMA ggadmin 3)配置EXTRACT文件 GGSCI (node2) 1> edit params rep1 ###配置如下信息： replicat rep1 userid ggadmin,password ggadmin assumetargetdefs discardfile /paic/app/gg/dirdat/discard.dsc,purge map keeny.*,target keeny.*;
5.整合上面所創建的對象
##1)在源端配置 GGSCI (node1) 1> info all Program Status Group Lag at Chkpt Time Since Chkpt MANAGER STOPPED ###只有一個MGR ##2)將表開啓附加日誌和強制日誌 GGSCI (node1) 13> dblogin userid ggadmin,password ggadmin Successfully logged into database. GGSCI (node1) 14> add trandata keeny.test; ##3）向MGR裏面添加EXTRACT GGSCI (node1) 2> view params ext1 extract ext1 userid ggadmin,password ggadmin exttrail /paic/app/gg/dirdat/ex table keeny.*; GGSCI (node1) 3> add extract ext1,tranlog,begin now EXTRACT added. ##4)添加TRAIL文件 GGSCI (node1) 4> add exttrail /paic/app/gg/dirdat/ex,extract ext1 ### 這裏還不太明白爲什麼ext1參數文件裏面指定了，這裏還要添加 ##5）添加DATAPUMP文件 GGSCI (node1) 8> add extract dp1,exttrailsource /paic/app/gg/dirdat/ex EXTRACT added. ##6)指定遠程TRAIL文件的目錄 GGSCI (node1) 9> add rmttrail /paic/app/gg/dirdat/rt,extract dp1 RMTTRAIL added. ##7)添加REPLICAT GGSCI (node2) 1> dblogin userid ggadmin,password ggadmin Successfully logged into database. GGSCI (node2) 4> add replicat rep1,exttrail /paic/app/gg/dirdat/rt,checkpointtable ggadmin.checkptable REPLICAT added. ##8)開啓源端進程 GGSCI (node1) 15> info all Program Status Group Lag at Chkpt Time Since Chkpt MANAGER STOPPED EXTRACT STOPPED DP1 00:00:00 00:16:04 EXTRACT STOPPED EXT1 00:00:00 00:21:27 GGSCI (node1) 17> info all Program Status Group Lag at Chkpt Time Since Chkpt MANAGER RUNNING EXTRACT STOPPED DP1 00:00:00 00:16:31 EXTRACT STOPPED EXT1 00:00:00 00:21:54 GGSCI (node1) 18> start ext1 Sending START request to MANAGER ... EXTRACT EXT1 starting GGSCI (node1) 19> start dp1 Sending START request to MANAGER ... EXTRACT DP1 starting GGSCI (node1) 21> info all Program Status Group Lag at Chkpt Time Since Chkpt MANAGER RUNNING EXTRACT RUNNING DP1 00:00:00 00:17:01 EXTRACT RUNNING EXT1 00:00:00 00:00:00 ##9)開啓目標端進程 GGSCI (node2) 7> start mgr Manager started. GGSCI (node2) 8> start rep1 Sending START request to MANAGER ... REPLICAT REP1 starting GGSCI (node2) 9> info ERROR: Invalid command. GGSCI (node2) 10> info all Program Status Group Lag at Chkpt Time Since Chkpt MANAGER RUNNING REPLICAT RUNNING REP1 01:31:51 00:00:04
以上步驟完成之後，就可以驗證一 下了。
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alter extract ext1,extseqno 0,extrba 0
alter replicat rep1,extseqno 0,extrba 0