本文主要是介绍Flink CDC 1.18.1 Oracle 数据同步到postgresql，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
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 2024Copyright (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 optionsSQL>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;
看不数据，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 PRIMARY KEY,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
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