使用OGG实现Oracle到kafka数据同步
使用OGG实现Oracle到kafka数据同步
使用OGG实现Oracle到kafka数据同步
一、环境规划
二、安装包下载
三、搭建过程
1.Oracle部署
2.Oracle OGG部署
3.kafka OGG部署
4.OGG配置（含测试准备）
四、测试
五、错误分析
一、环境规划
二、安装包下载
三、搭建过程
1.Oracle部署
2.Oracle OGG部署
3.kafka OGG部署
4.OGG配置（含测试准备）
四、测试
五、错误分析
一、环境规划
- 实现目标：配置OGG，实现从Oracle到kafka数据增量同步。同步消息格式为json。
- 主机规划：
| 身份 | 主机名 | 版本 | IP | OGG版本 |
|---|---|---|---|---|
| 源端 | orcldb | Release 11.2.0.4.0 | 172.16.10.152 | OGG-12.3.0.1.4 |
| 目标端 | kafka | kafka_2.11-1.1.1 | 172.16.100.241 | OGG_BigData_Linux_x64_12.3.2.1.1 |
二、安装包下载
- Oracle OGG下载地址：https://www.oracle.com/middleware/technologies/goldengate-downloads.html#license-lightbox
- kafka OGG下载地址：https://www.oracle.com/middleware/technologies/goldengate-downloads.html#license-lightbox（BigData）
三、搭建过程
1.Oracle部署
1）系统配置：
#修改主机名，防火墙关闭，selinux关闭等
[root@172-16-10-152 ~]# hostnamectl set-hostname orcldb
[root@172-16-10-152 ~]# su -
Last login: Mon Aug 10 09:08:26 EDT 2020 from 172.16.10.110 on pts/0
[root@orcldb ~]# systemctl stop firewalld
[root@orcldb ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@orcldb ~]# vim /etc/sysconfig/selinux
..
SELINUX=disabled
...
#修改相关参数
[root@orcldb ~]# vim /etc/security/limits.conf
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
[root@orcldb src]# vim /etc/sysctl.conf
[root@orcldb src]# sysctl -p
net.ipv6.conf.all.disable_ipv6 = 1
fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmall = 2097152
kernel.shmmax = 536870912
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
[root@orcldb ~]# vim /etc/pam.d/login
session required /lib64/security/pam_limits.so
session required pam_limits.so
[root@orcldb src]# vim /etc/profile
if [ $USER = "oracle" ]; then
if [ $SHELL = "/bin/ksh" ]; then
ulimit -p 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
fi
[root@orcldb src]# source /etc/profile2）安装相应软件包，创建用户，组以及相关文件夹
[root@orcldb ~]# yum -y install binutils compat-libcap1 compat-libstdc++-33 gcc gcc-c++ glibc glibc-devel ksh libaio libaio-devel libgcc libstdc++ libstdc++-devel libXi libXtst make sysstat unixODBC unixODBC-devel
[root@orcldb src]# groupadd -g 501 oinstall
[root@orcldb src]# groupadd -g 502 dba
[root@orcldb src]# groupadd -g 503 oper
[root@orcldb src]# useradd -u 502 -g oinstall -G dba,oper oracle
[root@orcldb src]# echo oracle | passwd --stdin oracle
Changing password for user oracle.
passwd: all authentication tokens updated successfully.
[root@orcldb src]# mkdir /u01/app/oracle -pv
[root@orcldb ~]# mkdir -pv /u01/app/oracle/product/11.2.0/db_home1
[root@orcldb ~]# chown oracle.oinstall /u01 -R
[root@orcldb src]# chown -R oracle.oinstall database/3）静默安装Oracle
#挂载软件包，此软件包oracle已不再发行
挂载软件包
[root@orcldb ~]# mkdir /mnt/cdrom
[root@orcldb ~]# mount -o loop oracle_11204_x86_64_linux.iso /mnt/cdrom/
mount: /dev/loop0 is write-protected, mounting read-only
[root@orcldb cdrom]# cp ./* /usr/local/src/
[root@orcldb src]# yum -y install unzip
[root@orcldb src]# unzip p13390677_112040_Linux-x86-64_1of7.zip
[root@orcldb src]# unzip p13390677_112040_Linux-x86-64_2of7.zip
#配置Oracle响应文件
[oracle@orcldb src]#cat /usr/local/src/database/response/db_install.rsp
oracle.install.responseFileVersion=/oracle/install/rspfmt_dbinstall_response_schema_v11_2_0
oracle.install.option=INSTALL_DB_SWONLY
ORACLE_HOSTNAME=oracledb
UNIX_GROUP_NAME=oinstall
INVENTORY_LOCATION=/u01/app/oracle/inventory
SELECTED_LANGUAGES=en,zh_CN
ORACLE_HOME=/u01/app/oracle/product/11.2.0/db_home1
ORACLE_BASE=/u01/app/oracle
oracle.install.db.InstallEdition=EE
oracle.install.db.EEOptionsSelection=false
oracle.install.db.optionalComponents=oracle.rdbms.partitioning:11.2.0.4.0,oracle.oraolap:11.2.0.4.0,oracle.rdbms.dm:11.2.0.4.0,oracle.rdbms.dv:11.2.0.4.0,oracle.rdbms.lbac:11.2.0.4.0,oracle.rdbms.rat:11.2.0.4.0
oracle.install.db.DBA_GROUP=dba
oracle.install.db.OPER_GROUP=dba
oracle.install.db.CLUSTER_NODES=
oracle.install.db.isRACOneInstall=
oracle.install.db.racOneServiceName=
oracle.install.db.config.starterdb.type=
oracle.install.db.config.starterdb.globalDBName=
oracle.install.db.config.starterdb.SID=
oracle.install.db.config.starterdb.characterSet=AL32UTF8
oracle.install.db.config.starterdb.memoryOption=true
oracle.install.db.config.starterdb.memoryLimit=
oracle.install.db.config.starterdb.installExampleSchemas=false
oracle.install.db.config.starterdb.enableSecuritySettings=true
oracle.install.db.config.starterdb.password.ALL=
oracle.install.db.config.starterdb.password.SYS=
oracle.install.db.config.starterdb.password.SYSTEM=
oracle.install.db.config.starterdb.password.SYSMAN=
oracle.install.db.config.starterdb.password.DBSNMP=
oracle.install.db.config.starterdb.control=DB_CONTROL
oracle.install.db.config.starterdb.gridcontrol.gridControlServiceURL=
oracle.install.db.config.starterdb.automatedBackup.enable=false
oracle.install.db.config.starterdb.automatedBackup.osuid=
oracle.install.db.config.starterdb.automatedBackup.ospwd=
oracle.install.db.config.starterdb.storageType=
oracle.install.db.config.starterdb.fileSystemStorage.dataLocation=
oracle.install.db.config.starterdb.fileSystemStorage.recoveryLocation=
oracle.install.db.config.asm.diskGroup=
oracle.install.db.config.asm.ASMSNMPPassword=
MYORACLESUPPORT_USERNAME=
MYORACLESUPPORT_PASSWORD=
SECURITY_UPDATES_VIA_MYORACLESUPPORT=
DECLINE_SECURITY_UPDATES=true
PROXY_HOST=
PROXY_PORT=
PROXY_USER=
PROXY_PWD=
PROXY_REALM=
COLLECTOR_SUPPORTHUB_URL=
oracle.installer.autoupdates.option=SKIP_UPDATES
oracle.installer.autoupdates.downloadUpdatesLoc=
AUTOUPDATES_MYORACLESUPPORT_USERNAME=
AUTOUPDATES_MYORACLESUPPORT_PASSWORD=
# 静默安装
[oracle@orcldb database]#./runInstaller -silent -force -ignoresysprereqs -ignoreprereq -responseFile /usr/local/src/database/response/db_install.rsp
...
The installation of Oracle Database 11g was successful.
Please check '/u01/app/oracle/inventory/logs/silentInstall2020-08-10_09-33-29AM.log' for more details.
As a root user, execute the following script(s):
1. /u01/app/oracle/inventory/orainstRoot.sh
2. /u01/app/oracle/product/11.2.0/db_home1/root.sh
Successfully Setup Software.
#执行相应脚本
[root@orcldb database]# /u01/app/oracle/inventory/orainstRoot.sh
Changing permissions of /u01/app/oracle/inventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.
Changing groupname of /u01/app/oracle/inventory to oinstall.
The execution of the script is complete.
[root@orcldb database]# /u01/app/oracle/product/11.2.0/db_home1/root.sh
Check /u01/app/oracle/product/11.2.0/db_home1/install/root_orcldb_2020-08-10_09-37-42.log for the output of root script
[oracle@orcldb database]$ netca /silent /responsefile /usr/local/src/database/response/netca.rsp
Check the trace file for details: /u01/app/oracle/cfgtoollogs/netca/trace_OraDb11g_home1-2008109AM3839.log
Oracle Net Services configuration failed. The exit code is 1
#配置database响应文件
/usr/local/src/database/response/dbca.rsp
[GENERAL]
RESPONSEFILE_VERSION = "11.2.0"
OPERATION_TYPE = "createDatabase"
[CREATEDATABASE]
GDBNAME = "orcl"
SID = "orcl"
TEMPLATENAME = "General_Purpose.dbc"
STORAGETYPE=FS
DATAFILEDESTINATION =/u01/app/oracle/oradata
CHARACTERSET = ZHS16GBK"
NATIONALCHARACTERSET= "AL16UTF16"
LISTENERS=LISTENER
TOTALMEMORY = "90000"
SYSPASSWORD = "oracle"
SYSTEMPASSWORD = "oracle"
# database静默安装
[oracle@orcldb response]$ dbca -silent -responseFile /usr/local/src/database/response/dbca.rsp
# 安装完成
SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
PL/SQL Release 11.2.0.4.0 - Production
CORE 11.2.0.4.0 Production
TNS for Linux: Version 11.2.0.4.0 - Production
NLSRTL Version 11.2.0.4.0 - Production4）开启归档，附加日志等
SQL> alter database archivelog;
Database altered.
SQL> ALTER DATABASE ADD SUPPLEMENTAL LOG DATA;
Database altered.
SQL> Alter database force logging;
Database altered.
SQL> ALTER DATABASE OPEN;
Database altered.
SQL> ALTER SYSTEM ARCHIVE LOG CURRENT;
System altered.
SQL> select LOG_MODE, SUPPLEMENTAL_LOG_DATA_MIN,FORCE_LOGGING from v$database;
LOG_MODE SUPPLEME FOR
------------ -------- ---
ARCHIVELOG YES YES2.Oracle OGG部署
1）创建相关路径，解压安装包，授权
[root@orcldb ~]# mkdir /ogg/ogginstall -p
[root@orcldb ~]# chown -R oracle.oinstall /ogg/ogginstall
[root@orcldb ~]# cd /ogg/ogginstall/
[root@orcldb ogginstall]# pwd
/ogg/ogginstall
[root@orcldb ~]# mv 123014_fbo_ggs_Linux_x64_shiphome.zip /home/oracle/
[root@orcldb ~]# cd /home/oracle
[root@orcldb oracle]# ls
123014_fbo_ggs_Linux_x64_shiphome.zip
[root@orcldb oracle]# chmown oracle.oinstall 123014_fbo_ggs_Linux_x64_shiphome.zip
-bash: chmown: command not found
[root@orcldb oracle]# chown oracle.oinstall 123014_fbo_ggs_Linux_x64_shiphome.zip
[root@orcldb oracle]# ll
total 331876
-rw-r--r--. 1 oracle oinstall 339837611 Aug 10 05:40 123014_fbo_ggs_Linux_x64_shiphome.zip
[root@orcldb oracle]# pwd
/home/oracle
[oracle@orcldb ~]$ chmod 755 -R fbo_ggs_Linux_x64_shiphome/2）编辑响应文件
[oracle@orcldb response]$ cp oggcore.rsp oggcore.rsp.bak
[oracle@orcldb response]$ pwd
/home/oracle/fbo_ggs_Linux_x64_shiphome/Disk1/response
oracle.install.responseFileVersion=/oracle/install/rspfmt_ogginstall_response_schema_v12_1_2
INSTALL_OPTION=ORA11g
SOFTWARE_LOCATION=/ogg/ogginstall
START_MANAGER=true
MANAGER_PORT=7809
DATABASE_LOCATION=/u01/app/oracle/product/11.2.0/db_home1
INVENTORY_LOCATION=/u01/app/oracle/inventory
UNIX_GROUP_NAME=oinstall3）配置环境变量
[oracle@orcldb ~]$ vim .bash_profile
...
export PATH=/ogg/oggoinstall:$PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib4）静默安装
[oracle@orcldb Disk1]$ ./runInstaller -silent -nowait -responseFile /home/oracle/fbo_
ggs_Linux_x64_shiphome/Disk1/response/oggcore.rsp
Starting Oracle Universal Installer...
Checking Temp space: must be greater than 120 MB. Actual 17853 MB Passed
Checking swap space: must be greater than 150 MB. Actual 3967 MB Passed
...5）创建OGG需要的目录
GGSCI (orcldb) 2> create subdirs
Creating subdirectories under current directory /ogg/ogginstall
Parameter file /ogg/ogginstall/dirprm: created.
Report file /ogg/ogginstall/dirrpt: created.
Checkpoint file /ogg/ogginstall/dirchk: created.
Process status files /ogg/ogginstall/dirpcs: created.
SQL script files /ogg/ogginstall/dirsql: created.
Database definitions files /ogg/ogginstall/dirdef: created.
Extract data files /ogg/ogginstall/dirdat: created.
Temporary files /ogg/ogginstall/dirtmp: created.
Credential store files /ogg/ogginstall/dircrd: created.
Masterkey wallet files /ogg/ogginstall/dirwlt: created.
Dump files /ogg/ogginstall/dirdmp: created.3.kafka OGG部署
1）创建软件安装目录，解压安装包
[root@kafka ~]# mkdir -p /opt/ogg
[root@kafka ~]# tar xf OGG_BigData_Linux_x64_12.3.2.1.1.tar -C /opt/ogg/2）编辑环境变量
[root@kafka ~]# vim /etc/profile
export OGG_HOME=/opt/ogg
export LD_LIBRARY_PATH=$JAVA_HOME/jre/lib/amd64:$JAVA_HOME/jre/lib/amd64/server:$JAVA_HOME/jre/lib/amd64/libjsig.so:$JAVA_HOME/jre/lib/amd64/server/libjvm.so:$OGG_HOME/lib
export PATH=$OGG_HOME:$PATH
[root@kafka ~]# source /etc/profile
#配置完成
[root@kafka ~]# ggsci
Oracle GoldenGate Command Interpreter
Version 12.3.0.1.2 OGGCORE_OGGADP.12.3.0.1.2_PLATFORMS_180712.2305
Linux, x64, 64bit (optimized), Generic on Jul 13 2018 00:46:09
Operating system character set identified as UTF-8.
Copyright (C) 1995, 2018, Oracle and/or its affiliates. All rights reserved.
GGSCI (kafka) 1>
3）创建OGG需要的目录
GGSCI (kafka) 1> create subdirs
Creating subdirectories under current directory /opt/ogg
Parameter file /opt/ogg/dirprm: created.
Report file /opt/ogg/dirrpt: created.
Checkpoint file /opt/ogg/dirchk: created.
Process status files /opt/ogg/dirpcs: created.
SQL script files /opt/ogg/dirsql: created.
Database definitions files /opt/ogg/dirdef: created.
Extract data files /opt/ogg/dirdat: created.
Temporary files /opt/ogg/dirtmp: created.
Credential store files /opt/ogg/dircrd: created.
Masterkey wallet files /opt/ogg/dirwlt: created.
Dump files 4.OGG配置（含测试准备）
Oracle配置：
1）Oracle创建专用的表空间，并创建复制用户授权
#创建表空间数据文件存放目录
[root@orcldb ~]# mkdir -p /u01/app/oracle/oggdata/orcl
[root@orcldb ~]# chown -R oracle:oinstall /u01/app/oracle/oggdata/orcl
#创建表空间
SQL> create tablespace oggtbs datafile '/u01/app/oracle/oggdata/orcl/oggtbs01.dbf' size 1000M autoextend on;
Tablespace created.
#创建用户并授权
SQL> create user ogg identified by ogg default tablespace oggtbs;
User created.
SQL> grant dba to ogg;#这里权限实际应该比较严谨，只是为了方便
Grant succeeded.2）Oracle配置OGG全局变量
[oracle@orcldb ogginstall]$ ./ggsci
GGSCI (orcldb) 1> dblogin userid ogg password ogg
Successfully logged into database.
GGSCI (orcldb as ogg@orcl) 2> edit param ./globals
oggschema ogg
allowOutputDir /opt/ogg/dirdat --这里这个是目标端复制文件的位置 OGG12的新特性3）Oracle配置OGG管理器mgr
GGSCI (orcldb as ogg@orcl) 4> edit param mgr
PORT 7809 --PORT mgr的默认监听端口
DYNAMICPORTLIST 7810-7909 --DYNAMICPORTLIST 动态端口集，当上述指定的端口不可用时在这个区间选择1个，最大范围256
AUTORESTART EXTRACT *,RETRIES 5,WAITMINUTES 3 --表示重启所有EXTRACT进程，每次间隔3分钟 最多可以执行5次
PURGEOLDEXTRACTS ./dirdat/*,usecheckpoints, minkeepdays 3 --trail文件定期清理4）Oracle创建测试用户和测试表
SQL> create user test_ogg identified by test_ogg default tablespace users;
User created.
SQL> grant dba to test_ogg;
Grant succeeded.
SQL> conn test_ogg/test_ogg;
Connected.
SQL> create table test_ogg(id int ,name varchar(20),primary key(id));
Table created.5）Oracle配置OGG添加待复制表
GGSCI (orcldb as ogg@orcl) 5> add trandata test_ogg.test_ogg
2020-08-19 22:32:12 INFO OGG-15132 Logging of supplemental redo data enabled for table TEST_OGG.TEST_OGG.
2020-08-19 22:32:12 INFO OGG-15133 TRANDATA for scheduling columns has been added on table TEST_OGG.TEST_OGG.
2020-08-19 22:32:12 INFO OGG-15135 TRANDATA for instantiation CSN has been added on table TEST_OGG.TEST_OGG.
GGSCI (orcldb as ogg@orcl) 6> info trandata test_ogg.test_ogg
Logging of supplemental redo log data is enabled for table TEST_OGG.TEST_OGG.
Columns supplementally logged for table TEST_OGG.TEST_OGG: "ID".
Prepared CSN for table TEST_OGG.TEST_OGG: 13974416）Oracle配置OGG extract进程，并添加extract进程
GGSCI (orcldb as ogg@orcl) 7> edit param extkafka
extract extkafka --进程名称
dynamicresolution --动态解析
SETENV (ORACLE_SID = "orcl") --设置环境变量，Oracle sid
SETENV (NLS_LANG = "american_america.AL32UTF8") --设置环境变量，字符集
userid ogg,password ogg --OGG连接数据库的用户和密码
exttrail /ogg/ogginstall/dirdat/to --trail文件的保存路径和文件名，注意只能2位其余由OGG不齐。一共8位。
table test_ogg.test_ogg; --table 指的就是表名，支持通配符*，注意必须用;结尾
# 添加extract进程
GGSCI (orcldb as ogg@orcl) 8> add extract extkafka,tranlog,begin now
EXTRACT added.
# 添加trail文件与extract绑定
GGSCI (orcldb as ogg@orcl) 9> add exttrail /ogg/ogginstall/dirdat/to,extract extkafka
EXTTRAIL added.7）Oracle配置OGG pump进程（与extract类似用来发送trail到目标端）
GGSCI (orcldb as ogg@orcl) 10> edit param pukafka
extract pukafka --进程名称
passthru --禁止OGG与Oracle交互
dynamicresolution --动态解析
userid ogg,password ogg --OGG连接数据库的用户和密码
rmthost 172.16.100.241 mgrport 7809 --目标端kafka mgr服务的地址和监听端口
rmttrail /opt/ogg/dirdat/to --目标端trail文件存储位置，这里和源端存储位置不同，这也是前面全局变量为什么加上新参数的原因
table test_ogg.test_ogg; --table 指的就是表名，支持通配符*，注意必须用;结尾
#分别将本地trail文件和目标端的trail文件绑定到extract进程
GGSCI (orcldb as ogg@orcl) 11> add extract pukafka,exttrailsource /ogg/ogginstall/dirdat/to
EXTRACT added.
GGSCI (orcldb as ogg@orcl) 12> add rmttrail /opt/ogg/dirdat/to,extract pukafka
RMTTRAIL added.8）Oracle配置define文件
Oracle与MySQL，Hadoop集群（HDFS，Hive，kafka等）等之间数据传输可以定义为异构数据类型的传输，故需要定义表之间的关系映射
GGSCI (orcldb) 4> edit param test_ogg
defsfile /ogg/ogginstall/dirdef/test_ogg.test_ogg
userid ogg,password ogg
table test_ogg.test_ogg;在Oracle OGG主目录下执行
[oracle@orcldb ogginstall]$ pwd
/ogg/ogginstall
[oracle@orcldb ogginstall]$ ./defgen paramfile dirprm/test_ogg.prm
...
***********************************************************************
** Running with the following parameters **
***********************************************************************
defsfile /ogg/ogginstall/dirdef/test_ogg.test_ogg
Source Context :
SourceModule : [defgen.main]
SourceID : [/scratch/aime/adestore/views/aime_adc00jza/oggcore/OpenSys/src/app/defgen/defgen.c]
SourceMethod : [create_defgen_file]
SourceLine : [1522]
ThreadBacktrace : [12] elements
: [./defgen(ggs::gglib::MultiThreading::MainThread::Run(int, char**))]
: []
: [/lib64/libc.so.6(__libc_start_main)]
: [./defgen(_ZN3ggs5gglib14MultiThreading6Thread9RunThreadEPNS2_10ThreadArgsE+0x173) [0x4c46b3]]
: [ng::MainThread::Run(int, char**)]
: [./defgen()]
: [./defgen(ggs::gglib::MultiThreading::MainThread::Run(int, char**))]
: [./defgen(ggs::gglib::MultiThreading::Thread::RunThread(ggs::gglib::MultiThreading::Thread::ThreadArgs*))�]
: [./defgen(ggs::gglib::MultiThreading::MainThread::Run(int, char**))]
: [./defgen()]
: [/lib64/libc.so.6(__libc_start_main)]
: [./defgen()]
2020-08-20 15:49:24 ERROR OGG-00037 DEFSFILE file /ogg/ogginstall/dirdef/test_ogg.test_ogg already exists.
#这里我已经生成完了 所以报错。把上面的test_ogg.test_ogg发送给目标端相应目录
2020-08-20 15:49:24 ERROR OGG-01668 PROCESS ABENDING.
[oracle@orcldb dirdef]$ scp -r ./test_ogg.test_ogg root@172.16.100.241:/opt/ogg/dirdef/
root@172.16.100.241's password:
test_ogg.test_ogg kafka配置：（相同参数不再说明）
1）启动kafka服务
[root@kafka kafka]# bin/zookeeper-server-start.sh config/zookeeper.properties
[root@kafka kafka]# bin/kafka-server-start.sh config/server.properties
[root@kafka kafka]# jps
26305 ScheduleMain
933 Jps
17126 ValidWebMain
9159 NodeManager
12779 JournalNode
13867 QuorumPeerMain
17197 StreamAppWebMain
20247 start.jar
20120 Kafka
30521 EngineMain
13626 DataNode
7452 JobHistoryServer
245732）kafka配置管理器mgr
GGSCI (kafka) 1> edit param mgr
PORT 7809
DYNAMICPORTLIST 7810-7909
AUTORESTART EXTRACT *,RETRIES 5,WAITMINUTES 3
PURGEOLDEXTRACTS ./dirdat/*,usecheckpoints, minkeepdays 33）kafka配置checkpoint
checkpoint复制可追溯的一个偏移量记录，在全局配置里添加checkpoint表即可。
GGSCI (kafka) 2> edit param ./GLOBALS
CHECKPOINTTABLE test_ogg.checkpoint4）kafka配置replicate进程
GGSCI (kafka) 3> edit param rekafka
REPLICAT rekafka --relicate进程名字
sourcedefs /ogg/ogginstall/dirdef/test_ogg.test_ogg --define的映射文件
TARGETDB LIBFILE libggjava.so SET property=dirprm/kafka.props --TARGETDB LIBFILE即定义kafka一些库文件以及配置文件位置
REPORTCOUNT EVERY 1 MINUTES, RATE --复制任务的报告生成频率
GROUPTRANSOPS 10000 --以事务传输时，事务合并的单位，减少IO操作
MAP test_ogg.test_ogg, TARGET test_ogg.test_ogg; --源端与目标端的映射关系5）设置kafka的配置文件
[root@kafka ogg]# cd /opt/ogg/dirprm/
[root@kafka dirprm]# ls
[root@kafka dirprm]# vim kafka.props
gg.handlerlist=kafkahandler
gg.handler.kafkahandler.type=kafka
gg.handler.kafkahandler.KafkaProducerConfigFile=custom_kafka_producer.properties
gg.handler.kafkahandler.topicMappingTemplate=test_ogg #kafka topic名称，OGG12有修改
gg.handler.kafkahandler.format=json
gg.handler.kafkahandler.mode=op
gg.classpath=dirprm/:/opt/dtstack/DTBase/kafka/libs/*:/opt/ogg/:/opt/ogg/lib/*
[root@kafka dirprm]# pwd
/opt/ogg/dirprm
[root@kafka dirprm]# vim custom_kafka_producer.properties
bootstrap.servers=172.16.100.241:9092
acks=1
compression.type=gzip
reconnect.backoff.ms=1000
value.serializer=org.apache.kafka.common.serialization.ByteArraySerializer
key.serializer=org.apache.kafka.common.serialization.ByteArraySerializer
batch.size=102400
linger.ms=100006）kafka配置添加trail文件到replicate进程
GGSCI (kafka) 1> add replicat rekafka exttrail /opt/ogg/dirdat/to,checkpointtable test_ogg.checkpoint
REPLICAT added.四、测试
启动两端进程：按照以下顺序
源端mgr ---> 目标端mgr ---> 源端extract ---> 源端pump ---> 目标replicate
本例中在OGG命令行中执行
GGSCI (orcldb) 1> start mgr
GGSCI (kafka) 1> start mgr
GGSCI (orcldb) 2> start extkafka
GGSCI (orcldb) 3> start pukafka
GGSCI (kafka) 2> start rekafka查看所有进程状态：
GGSCI (orcldb) 1> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING EXTKAFKA 00:00:00 00:00:08
EXTRACT RUNNING PUKAFKA 00:00:00 00:00:00
GGSCI (kafka) 1> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
REPLICAT RUNNING REKAFKA 00:00:00 00:00:02 插入测试：
五、错误分析
PUMP（PUKAFKA）进程状态为abended，使用view report PUKAFKA查看报错信息如下：2020-08-20 09:45:47 ERROR OGG-25127 Received an error reply requesting a graceful shutdown. (Reply received
is 'GSOutput file /ogg/ogginstall/dirdat/to000000 is not in any allowed output directories.'.).
建议两端trail保存路径相同，避免混淆。这里路径配置文件是源端的实际应该是目标端。
百度对这类问题解释很全面
