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Oracle同步数据到kafka的方法

2022-02-08 09:09:41 作者：空白葛

本文主要介绍如何使用kafka-connect-oracle开源工具，将Oracle dml产生的数据实时同步至kafka，供kafka消费，对Oracle同步数据到kafka的方法感兴趣的朋友一起看看吧

环境准备

软件准备

CentOS Linux 7.6.1810 （2台，A主机，B主机）
Oracle 11.2.0.4（A主机安装）
Kafka 2.13-2.6.0 （B主机安装）
kafka-connect-oracle-master （B主机安装，开源程序，用于同步Oracle数据到kafka）
apache-maven 3.6.3 （B主机安装，kafka-connect-oracle-master 的打包工具）
jdk-8u261-linux-x64.rpm （B主机安装）

下载地址

Cenos 和Oracle 和 JDK 自行到官网下载
Kafka http://kafka.apache.org/downloads

Kafka Connect Oracle https://github.com/tianxiancode/kafka-connect-oracle
apache-maven 3.6.3 http://maven.apache.org/download.cgi

实施过程

Oracle主机（A）配置

Oracle实例配置项：

开启归档日志
开启附加日志
创建kafka-connect-oracle-master连接用户
创建测试数据生成用户及测试表

--开启归档日志
sqlplus / as sysdba    
SQL>shutdown immediate
SQL>startup mount
SQL>alter database archivelog;
SQL>alter database open;
--开启附加日志
SQL>alter database add supplemental log data (all) columns;
--创建kafka-connect-oracle-master连接用户
create role logmnr_role;
grant create session to logmnr_role;
grant  execute_catalog_role,select any transaction ,select any dictionary to logmnr_role;
create user kminer identified by kminerpass;
grant  logmnr_role to kminer;
alter user kminer quota unlimited on users;
--创建测试数据生成用户及测试表
create tablespace test_date datafile '/u01/app/oracle/oradata/zzsrc/test_date01.dbf' size 100M autoextend on next 10M;
create user whtest identified by whtest default tablespace test_date;
grant connect,resource to whtest;
grant execute on dbms_scheduler to whtest;
grant execute on dbms_random to whtest;
grant   create  job  to  whtest;
create table t1 (
id int ,
name char(10),
createtime date default sysdate
);
alter table WHTEST.T1  add constraint PK_ID_T1 primary key (ID)  using index   tablespace TEST_DATE;

create table t2 (
id int ,
name char(10),
createtime date default sysdate
);
alter table WHTEST.T2  add constraint PK_ID_T2 primary key (ID)  using index   tablespace TEST_DATE;
create table t3 (
id int ,
name char(10),
createtime date default sysdate
);
alter table WHTEST.T3  add constraint PK_ID_T3 primary key (ID)  using index   tablespace TEST_DATE;
begin
dbms_scheduler.create_job(
job_name=> 't1_job',
job_type=> 'PLSQL_BLOCK',
job_action =>'declare
v_id int;
v_name char(10);
begin
  for i in 1..10 loop
    v_id := round(dbms_random.value(1,1000000000));
    v_name :=round(dbms_random.value(1,1000000000));
    insert into whtest.t1 (id,name)values(v_id,v_name);
  end loop;
end;',
enabled=>true,
repeat_interval=>'sysdate + 5/86400',
comments=>'insert into t1 every 5 sec');
end;
/ 

begin
dbms_scheduler.create_job(
job_name=> 't2_job',
job_type=> 'PLSQL_BLOCK',
job_action =>'declare
v_id int;
v_name char(10);
begin
  for i in 1..10 loop
    v_id := round(dbms_random.value(1,1000000000));
    v_name :=round(dbms_random.value(1,1000000000));
    insert into whtest.t2 (id,name)values(v_id,v_name);
  end loop;
end;',
enabled=>true,
repeat_interval=>'sysdate + 5/86400',
comments=>'insert into t1 every 5 sec');
end;
/ 

begin
dbms_scheduler.create_job(
job_name=> 't3_job',
job_type=> 'PLSQL_BLOCK',
job_action =>'declare
v_id int;
v_name char(10);
begin
  for i in 1..10 loop
    v_id := round(dbms_random.value(1,1000000000));
    v_name :=round(dbms_random.value(1,1000000000));
    insert into whtest.t3 (id,name)values(v_id,v_name);
  end loop;
end;',
enabled=>true,
repeat_interval=>'sysdate + 5/86400',
comments=>'insert into t3 every 5 sec');
end;
/ 
--JOB创建之后，暂时先diable，待kafka配置完成之后再enable
exec DBMS_SCHEDULER.DISABLE('T1_JOB');
exec DBMS_SCHEDULER.DISABLE('T2_JOB');
exec DBMS_SCHEDULER.DISABLE('T3_JOB');

exec DBMS_SCHEDULER.ENABLE('T1_JOB');
exec DBMS_SCHEDULER.ENABLE('T2_JOB');
exec DBMS_SCHEDULER.ENABLE('T3_JOB');

Kafka主机（B）配置

将下载好的Kafka 2.13-2.6.0 、kafka-connect-oracle-master、apache-maven 3.6.3、JDK 1.8.0上传至B主机/soft目录待使用。

主机hosts文件添加解析

[root@softdelvily ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.20.44 softdelvily localhost

安装JDK

[root@softdelvily soft]# rpm -ivh jdk-8u261-linux-x64.rpm 
warning: jdk-8u261-linux-x64.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:jdk1.8-2000:1.8.0_261-fcs        ################################# [100%]
Unpacking JAR files...
        tools.jar...
        plugin.jar...
        javaws.jar...
        deploy.jar...
        rt.jar...
        jsse.jar...
        charsets.jar...
        localedata.jar...

配置apache-maven工具

将apache-maven-3.6.3-bin.tar.gz解压至/usr/local目录，并设置相应的/etc/profile环境变量。

[root@softdelvily soft]# tar xvf apache-maven-3.6.3-bin.tar.gz -C /usr/local/
apache-maven-3.6.3/README.txt
apache-maven-3.6.3/LICENSE
.....
[root@softdelvily soft]# cd /usr/local/
[root@softdelvily local]# ll
total 0
drwxr-xr-x. 6 root root  99 Sep 23 09:56 apache-maven-3.6.3
drwxr-xr-x. 2 root root   6 Apr 11  2018 bin
.....
[root@softdelvily local]# vi /etc/profile
.......
##添加如下环境变量
MAVEN_HOME=/usr/local/apache-maven-3.6.3
export MAVEN_HOME
export PATH=${PATH}:${MAVEN_HOME}/bin
[root@softdelvily local]# source /etc/profile
[root@softdelvily local]# mvn -v
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: /usr/local/apache-maven-3.6.3
Java version: 1.8.0_262, vendor: Oracle Corporation, runtime: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.10.0-957.el7.x86_64", arch: "amd64", family: "unix"

配置Kafka 2.13-2.6.0

解压Kafka 2.13-2.6.0 至/usr/local目录。

[root@softdelvily soft]# tar xvf kafka_2.13-2.6.0.tgz -C /usr/local/
kafka_2.13-2.6.0/
kafka_2.13-2.6.0/LICENSE
......
[root@softdelvily soft]# cd /usr/local/
[root@softdelvily local]# ll
total 0
drwxr-xr-x. 6 root root 99 Sep 23 09:56 apache-maven-3.6.3
drwxr-xr-x. 6 root root 89 Jul 29 02:23 kafka_2.13-2.6.0
.....

开启kafka，并创建对应同步数据库过的topic

--1、session1 启动ZK
[root@softdelvily kafka_2.13-2.6.0]# cd /usr/local/kafka_2.13-2.6.0/bin/
[root@softdelvily bin]# ./zookeeper-server-start.sh ../config/zookeeper.properties
[2020-09-23 10:06:49,158] INFO Reading configuration from: ../config/zookeeper.properties 
.......
[2020-09-23 10:06:49,311] INFO Using checkIntervalMs=60000 maxPerMinute=10000 (org.apache.zookeeper.server.ContainerManager)
--2、session2 启动kafka
[root@softdelvily kafka_2.13-2.6.0]# cd /usr/local/kafka_2.13-2.6.0/bin/
[root@softdelvily bin]# ./kafka-server-start.sh ../config/server.properties
--3、session3 创建cdczztar
[root@softdelvily kafka_2.13-2.6.0]# cd /usr/local/kafka_2.13-2.6.0/bin/
[root@softdelvily bin]# ./kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic cdczztar
Created topic cdczztar.
[root@softdelvily bin]# ./kafka-topics.sh --zookeeper localhost:2181 --list
__consumer_offsets
cdczztar

配置kafka-connect-oracle-maste

解压kafka-connect-oracle-master至/soft目录，并配置相应config文件，然后使用maven工具编译程序。

--解压zip包
[root@softdelvily soft]# unzip kafka-connect-oracle-master.zip 
[root@softdelvily soft]# ll
total 201180
-rw-r--r--. 1 root root   9506321 Sep 22 16:05 apache-maven-3.6.3-bin.tar.gz
-rw-r--r--. 1 root root 127431820 Sep  8 10:43 jdk-8u261-linux-x64.rpm
-rw-r--r--. 1 root root  65537909 Sep 22 15:59 kafka_2.13-2.6.0.tgz
drwxr-xr-x. 5 root root       107 Sep  8 15:48 kafka-connect-oracle-master
-rw-r--r--. 1 root root   3522729 Sep 22 14:14 kafka-connect-oracle-master.zip
[root@softdelvily soft]# cd kafka-connect-oracle-master/config/
[root@softdelvily config]# ll
total 4
-rw-r--r--. 1 root root 1135 Sep  8 15:48 OracleSourceConnector.properties
--调整properties配置文件
--需要调整项db.name.alias、topic、db.name、db.hostname、db.user、db.user.password、table.whitelist、table.blacklist信息，具体说明参考README.md
[root@softdelvily config]# vi OracleSourceConnector.properties 
name=oracle-logminer-connector
connector.class=com.ecer.kafka.connect.oracle.OracleSourceConnector
db.name.alias=zztar
tasks.max=1
topic=cdczztar
db.name=zztar
db.hostname=192.168.xx.xx
db.port=1521
db.user=kminer
db.user.password=kminerpass
db.fetch.size=1
table.whitelist=WHTEST.T1,WHTEST.T2
table.blacklist=WHTEST.T3
parse.dml.data=true
reset.offset=true
start.scn=
multitenant=false
--编译程序
[root@softdelvily ~]# cd /soft/kafka-connect-oracle-master
[root@softdelvily kafka-connect-oracle-master]# mvn clean package
[INFO] Scanning for projects...
.......
[INFO] Building jar: /soft/kafka-connect-oracle-master/target/kafka-connect-oracle-1.0.68.jar
with assembly file: /soft/kafka-connect-oracle-master/target/kafka-connect-oracle-1.0.68.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  94.03 s
[INFO] Finished at: 2020-09-23T10:25:52+08:00
[INFO] ------------------------------------------------------------------------

将如下文件复制到kafka工作目录。

复制kafka-connect-oracle-1.058.jar 和 lib/ojdbc7.jar 到$KAFKA_HOME/lib
复制config/OracleSourceConnector.properties 文件到$KAFKA_HOME/config

[root@softdelvily config]# cd /soft/kafka-connect-oracle-master/target/
[root@softdelvily target]# cp kafka-connect-oracle-1.0.68.jar /usr/local/kafka_2.13-2.6.0/libs/
[root@softdelvily lib]# cd /soft/kafka-connect-oracle-master/lib
[root@softdelvily lib]# cp ojdbc7.jar /usr/local/kafka_2.13-2.6.0/libs/
[root@softdelvily lib]# cd /soft/kafka-connect-oracle-master/config/
[root@softdelvily config]# cp OracleSourceConnector.properties /usr/local/kafka_2.13-2.6.0/config/

启动kafka-connect-oracle

[root@softdelvily kafka_2.13-2.6.0]# cd /usr/local/kafka_2.13-2.6.0/bin/
[root@softdelvily bin]# ./connect-standalone.sh ../config/connect-standalone.properties ../config/OracleSourceConnector.properties
......
(com.ecer.kafka.connect.oracle.OracleSourceTask:187)
[2020-09-23 10:40:31,375] INFO Log Miner will start at new position SCN : 2847346 with fetch size : 1 (com.ecer.kafka.connect.oracle.OracleSourceTask:188)

启动kafka消费者

[root@softdelvily kafka_2.13-2.6.0]# cd /usr/local/kafka_2.13-2.6.0/bin/
[root@softdelvily bin]# ./kafka-console-consumer.sh --bootstrap-server localhost:9092 --from-beginning --topic cdczztar

启动数据库JOB

[oracle@oracle01 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Wed Sep 23 10:45:16 2020

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

set pagesize 999

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> SQL> conn whtest/whtest
Connected.
SQL> exec DBMS_SCHEDULER.ENABLE('T1_JOB');

PL/SQL procedure successfully completed.

kafka消费者界面

出现类似记录，表明同步成功，数据以key:value的形式输出。

{"schema":{"type":"struct","fields":[{"type":"int64","optional":false,"field":"SCN"},{"type":"string","optional":false,"field":"SEG_OWNER"},{"type":"string","optional":false,"field":"TABLE_NAME"},{"type":"int64","optional":false,"name":"org.apache.kafka.connect.data.Timestamp","version":1,"field":"TIMESTAMP"},{"type":"string","optional":false,"field":"SQL_REDO"},{"type":"string","optional":false,"field":"OPERATION"},{"type":"struct","fields":[{"type":"double","optional":false,"field":"ID"},{"type":"string","optional":true,"field":"NAME"},{"type":"int64","optional":true,"name":"org.apache.kafka.connect.data.Timestamp","version":1,"field":"CREATETIME"}],"optional":true,"name":"value","field":"data"},{"type":"struct","fields":[{"type":"double","optional":false,"field":"ID"},{"type":"string","optional":true,"field":"NAME"},{"type":"int64","optional":true,"name":"org.apache.kafka.connect.data.Timestamp","version":1,"field":"CREATETIME"}],"optional":true,"name":"value","field":"before"}],"optional":false,"name":"zztar.whtest.t1.row"},"payload":{"SCN":2847668,"SEG_OWNER":"WHTEST","TABLE_NAME":"T1","TIMESTAMP":1600829206000,"SQL_REDO":"insert into \"WHTEST\".\"T1\"(\"ID\",\"NAME\",\"CREATETIME\") values (557005146,'533888119 ',TIMESTAMP ' 2020-09-23 10:46:46')","OPERATION":"INSERT","data":{"ID":5.57005146E8,"NAME":"533888119","CREATETIME":1600829206000},"before":null}}

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