datax离线同步oracle表到clickhouse实践1

时间：2024.01

目录
1、安装启动 oracle19c 容器
2、rpm包安装clickhouse
3、datax安装

4、datax同步

目标库根据要同步的表，按照clickhouse建表规范建表

编写json文件

编写增量同步shell脚本，加入 crond 定时任务

1、安装启动 oracle19c 容器

二、拉取镜像

docker pull registry.cn-hangzhou.aliyuncs.com/zhuyijun/oracle

三. 创建Oracle 19c镜像的容器

3.1创建目录

root@docker \~# mkdir /opt/oradata

root@docker \~# chmod -R 777 /opt/oradata/

root@docker \~# mkdir /opt/to_oracle

3.2 创建实例

docker run -d -it --name oracle19c -p 11521:1521 -p 5500:5500 \

-v /opt/oradata:/opt/oracle/oradata \

-v /opt/to_oracle:/home/oracle/to_oracle \

registry.cn-hangzhou.aliyuncs.com/zhuyijun/oracle:latest

3.3 查看日志

docker logs -f oracle19c

四、 修改密码

系统默认的system密码修改成oracle

docker exec oracle19c ./setPassword.sh oracle

5.1 进入容器

docker exec -it oracle19c /bin/bash

5.2 登录数据库

sqlplus sys/oracle@localhost:1521/ORCLCDB as sysdba

show pdbs;

alter session set container=ORCLPDB1;

5.4 查看数据文件位置

select file_name from dba_data_files;

5.6 创建数据表空间

create tablespace bigdata datafile '/opt/oracle/oradata/ORCLCDB/ORCLPDB1/bigdata.dbf' size 10G autoextend on;

5.7 创建用户，指定默认表空间

create user bigdata identified by bigdata default tablespace bigdata;

5.8 用户授权

grant connect,resource,dba to bigdata;

5.3 连接可拔插数据库

sqlplus /nolog

conn bigdata/bigdata@ORCLPDB1

建表、插入数据

把 create.sql insert.sql 放在 /opt/to_oracle/

SQL> @/home/oracle/to_oracle/create.sql

文件内容

create table TDBA_TEST01
(
  TID          number primary key,
  TSN          varchar2(40),
  TNO          number,
  TAMT         number(15,2),
  CREATE_DATE  date not null,
  UPDATE_DATE  date,
  UPDATE_TIME  date
);

SQL> @/home/oracle/to_oracle/insert.sql

文件内容

INSERT INTO TDBA_TEST01 VALUES(1,'SN001',1,1.01,TO_DATE('2020-02-01','YYYY-MM-DD'),TO_DATE('2020-02-01','YYYY-MM-DD'),TO_DATE('2020-02-01 01:01:01','YYYY-MM-DD HH24:MI:SS'));
INSERT INTO TDBA_TEST01 VALUES(2,'SN002',2,2.12,TO_DATE('2020-02-02','YYYY-MM-DD'),TO_DATE('2020-02-02','YYYY-MM-DD'),TO_DATE('2020-02-02 01:01:01','YYYY-MM-DD HH24:MI:SS'));
INSERT INTO TDBA_TEST01 VALUES(3,'SN003',3,3.23,TO_DATE('2020-02-03','YYYY-MM-DD'),TO_DATE('2020-02-03','YYYY-MM-DD'),TO_DATE('2020-02-03 01:01:01','YYYY-MM-DD HH24:MI:SS'));
INSERT INTO TDBA_TEST01 VALUES(4,'SN004',4,4.34,TO_DATE('2020-02-04','YYYY-MM-DD'),TO_DATE('2020-02-04','YYYY-MM-DD'),TO_DATE('2020-02-04 01:01:01','YYYY-MM-DD HH24:MI:SS'));
INSERT INTO TDBA_TEST01 VALUES(5,'SN005',5,5.45,TO_DATE('2020-02-05','YYYY-MM-DD'),TO_DATE('2020-02-05','YYYY-MM-DD'),TO_DATE('2020-02-05 01:01:01','YYYY-MM-DD HH24:MI:SS'));
INSERT INTO TDBA_TEST01 VALUES(6,'SN006',6,6,TO_DATE('2020-02-06','YYYY-MM-DD'),TO_DATE('2020-02-06','YYYY-MM-DD'),TO_DATE('2020-02-06 01:01:01','YYYY-MM-DD HH24:MI:SS'));
INSERT INTO TDBA_TEST01 VALUES(7,'SN007',7,7.67,TO_DATE('2020-02-07','YYYY-MM-DD'),TO_DATE('2020-02-07','YYYY-MM-DD'),TO_DATE('2020-02-07 01:01:01','YYYY-MM-DD HH24:MI:SS'));
INSERT INTO TDBA_TEST01 VALUES(8,'SN008',8,8.78,TO_DATE('2020-02-08','YYYY-MM-DD'),TO_DATE('2020-02-08','YYYY-MM-DD'),TO_DATE('2020-02-08 01:01:01','YYYY-MM-DD HH24:MI:SS'));
INSERT INTO TDBA_TEST01 VALUES(9,'SN009',9,9,TO_DATE('2020-02-09','YYYY-MM-DD'),TO_DATE('2024-01-09','YYYY-MM-DD'),TO_DATE('2020-02-09 01:01:01','YYYY-MM-DD HH24:MI:SS'));
INSERT INTO TDBA_TEST01 VALUES(9,'SN009',9,9,TO_DATE('2020-02-09','YYYY-MM-DD'),TO_DATE('2024-01-09','YYYY-MM-DD'),TO_DATE('2020-02-09 01:01:01','YYYY-MM-DD HH24:MI:SS'));

2、rpm包安装clickhouse

root@conda \~# mkdir clickhouse22.3

root@conda \~# cd clickhouse22.3

下载clickhouse的rpm包

https://packages.clickhouse.com/rpm/stable/clickhouse-client-22.3.2.2-2.noarch.rpm

https://packages.clickhouse.com/rpm/stable/clickhouse-common-static-22.3.2.2-2.x86_64.rpm

https://packages.clickhouse.com/rpm/stable/clickhouse-common-static-dbg-22.3.2.2-2.x86_64.rpm

https://packages.clickhouse.com/rpm/stable/clickhouse-server-22.3.2.2-2.noarch.rpm

root@conda clickhouse22.3# ll

total 929924

-rw-r--r--. 1 root root 46748 Sep 22 2022 clickhouse-client-22.3.2.2-2.noarch.rpm

-rw-r--r--. 1 root root 178362876 Sep 22 2022 clickhouse-common-static-22.3.2.2-2.x86_64.rpm

-rw-r--r--. 1 root root 773751886 Sep 22 2022 clickhouse-common-static-dbg-22.3.2.2-2.x86_64.rpm

-rw-r--r--. 1 root root 72089 Sep 22 2022 clickhouse-server-22.3.2.2-2.noarch.rpm

root@conda clickhouse22.3# rpm -ivh *.rpm

自定义设置密码

bigdata

root@conda clickhouse22.3# clickhouse start

root@conda clickhouse22.3# clickhouse status

/var/run/clickhouse-server/clickhouse-server.pid file exists and contains pid = 10792.

The process with pid = 10792 is running.

root@conda clickhouse22.3# clickhouse-client --password bigdata -m

ClickHouse client version 22.3.2.1.

Connecting to localhost:9000 as user default.

Connected to ClickHouse server version 22.3.2 revision 54455.

conda :)

create table TEST01
(
  TID          UInt32,
  TSN          String,
  TNO          UInt16,
  TAMT         Decimal(15,2),
  CREATE_DATE  Date,
  UPDATE_DATE  Date,
  UPDATE_TIME  DateTime
) ENGINE = MergeTree(CREATE_DATE, (TID), 8192)

3、datax安装

System Requirements

JDK(1.8以上，推荐1.8)

Python(推荐Python2.6.X) 我使用的CentOS7自带的 Python 2.7.5

直接下载DataX工具包：

DataX下载地址（http://datax-opensource.oss-cn-hangzhou.aliyuncs.com/datax.tar.gz）

datax_ck.tar.gz
datax_ck.tar.gz下载https://www.123pan.com/s/VTMXjv-pfA6v.html

提取码:xxxx

下载后解压至本地某个目录，进入bin目录，即可运行同步作业：

tar -zxvf datax_ck.tar.gz