Flink CDC 1.18.1 Oracle 数据同步到postgresql

1、下载flink-1.18.1-bin-scala_2.12.tgz，linux通过：

wget https://archive.apache.org/dist/flink/flink-1.18.1/flink-1.18.1-bin-scala_2.12.tgz

2、oracle11g客户端安装，下载：

instantclient-basic-linux.x64-11.2.0.4.0.zip
instantclient-sdk-linux.x64-11.2.0.4.0.zip
instantclient-sqlplus-linux.x64-11.2.0.4.0.zip

以上文件，在ORACLE网站下载。

3、配置oracle客户端：

[root@wn1 ~]# ls /usr/local/
[root@wn1 ~]# cp instantclient-* /usr/local
[root@wn1 ~]# cd /usr/local
[root@wn1 ~]# unzip instantclient-basic-linux.x64-11.2.0.4.0.zip
[root@wn1 ~]# unzip instantclient-sdk-linux.x64-11.2.0.4.0.zip
[root@wn1 ~]# unzip instantclient-sqlplus-linux.x64-11.2.0.4.0.zip
[root@wn1 ~]# mv instantclient_11_2 oracle_11
[root@wn1 ~]# rm instantclient-*
[root@wn1 ~]# vi /etc/profile
#增加以下内容
export ORACLE_HOME=/usr/local/oracle_11
export PATH=.:${PATH}:$ORACLE_HOME
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$ORACLE_HOME

#保存退出，执行
[root@wn1 ~]# source /etc/profile

#修改ld配置
[root@wn1 ~]#  vi /etc/ld.so.conf.d/oracle.conf
#写入内容
/usr/local/oracle_11
#保存退出，执行
[root@wn1 ~]#ldconfig
#配置oracle连接参数
[root@wn1 ~]# mkdir -p network/admin/
[root@wn1 ~]# cd network/admin/
#找一个tnsnames.ora文件，直接上传到服务器
[root@wn1 ~]# cp /root/tnsnames.ora ./

#测试连接
[root@wn1 ~]# sqlplus sys/manager@//192.168.56.1/orcl
SQL*Plus: Release 11.2.0.4.0 Production on Sun Mar 24 18:04:15 2024

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL>

4、配置oracle数据库，启用归档日志，这步需要参考：https://nightlies.apache.org/flink/flink-cdc-docs-release-3.0/zh/docs/connectors/legacy-flink-cdc-sources/oracle-cdc/

5、下载oracle cdc 连接器

wget https://maven.aliyun.com/repository/public/com/ververica/flink-sql-connector-oracle-cdc/3.0.1/flink-sql-connector-oracle-cdc-3.0.1.jar

解压：

tar zxvf flink-1.18.1-bin-scala_2.12.tgz

将flink-sql-connector-oracle-cdc-3.0.1.jar复制到flink-1.18.1/lib目录中

6、下载 flink-connector-jdbc-3.1.1-1.17.jar，postgresql-42.7.3.jar

https://repo1.maven.org/maven2/org/apache/flink/flink-connector-jdbc/3.1.1-1.17/flink-connector-jdbc-3.1.1-1.17.jar

https://jdbc.postgresql.org/download/postgresql-42.7.3.jar

将jar包复制到flink-1.18.1/lib目录中

7、安装postgresql就不说了，相信你已经有了数据库了

8、修改Flink的配置文件 /home/flink/flink-1.18.1/conf/flink-conf.yaml ，主要是各种服务的绑定地址，默认为localhost，统统改为0.0.0.0，如：rest.address: 0.0.0.0 #localhost
9、启动

[flink@cn1 bin]$ ./start-cluster.sh
[flink@cn1 bin]$ ./sql-client.sh
Flink SQL>
#创建ORACLE源表

SET execution.checkpointing.interval = 3s;

create table SYS_DIC_DEPT
(
  DEPT_CODE       STRING,
  DEPT_NAME       STRING,
  DEPT_ADDR       STRING,
  DEPT_MEMO       STRING,
  DEPT_FLAG       STRING,
  DEPT_GZYZLTJFLAG STRING,
  DEPT_UPPER       STRING,
  PRIMARY KEY (DEPT_CODE) NOT ENFORCED
)
 WITH (
   'connector' = 'oracle-cdc',
   'hostname' = '192.168.56.1',
   'port' = '1521',
   'username' = 'username',
   'password' = '123456',
   'database-name' = 'ORCL',
   'schema-name' = 'schema-name',
    'table-name' = 'table-name',
    'debezium.log.mining.strategy'='online_catalog',
    'debezium.log.mining.continuos.mine'='true',
    'debezium.snapshot.mode' = 'initial',
    'debezium.database.tablename.case.insensitive'='true'
 );

 Flink SQL> select * from SYS_DIC_DEPT;

如果看不到数据，请检查ORACLE的字段是否全部大写

10、创建PG Sink：

Flink SQL>
create table sys_dic_dept_sink
(
  dept_code       STRING,
  dept_name       STRING,
  dept_addr       STRING,
  dept_memo       STRING,
  dept_flag       STRING,
  dept_gzyzltjflag STRING,
  dept_upper       STRING,
  PRIMARY KEY (dept_code) NOT ENFORCED
)
with(
'connector' = 'jdbc',
'url' = 'jdbc:postgresql://192.168.56.90:5432/postgres?currentSchema=public', 
'username' = 'postgres',
'password' = '123456',  
'table-name' = 'sys_dic_dept'
);

11、抽数据

Flink SQL> insert into sys_dic_dept_sink select * from SYS_DIC_DEPT;

12、查看任务执行 http://192.168.56.90:8081/#/job/running