本文是Oracle数据整库同步至Apache Doris实操记录，仅供参考
参考：https://cn.selectdb.com/blog/104
1、Oracle 配置
[root@node1 oracle]# pwd
/u01/app/oracle
[root@node1 oracle]# mkdir recovery_area
[root@node1 oracle]# chown -R oracle:dba recovery_area
SQL> conn sys/ as sysdba
输入口令:
已连接。
SQL> alter system set db_recovery_file_dest_size = 2G;
系统已更改。
SQL> alter system set db_recovery_file_dest='/u01/app/oracle/recovery_area' scope=spfile;
系统已更改。
SQL>
SQL> shutdown immediate;
数据库已经关闭。
已经卸载数据库。
ORACLE 例程已经关闭。
SQL> startup mount;
ORACLE 例程已经启动。
Total System Global Area 1068937216 bytes
Fixed Size 2233344 bytes
Variable Size 624954368 bytes
Database Buffers 436207616 bytes
Redo Buffers 5541888 bytes
数据库装载完毕。
SQL> alter database archivelog;
数据库已更改。
SQL> alter database open;
数据库已更改。
SQL> archive log list;
数据库日志模式 存档模式
自动存档 启用
存档终点 USE_DB_RECOVERY_FILE_DEST
最早的联机日志序列 1
下一个存档日志序列 2
当前日志序列 2
SQL> ALTER DATABASE ADD SUPPLEMENTAL LOG DATA;
数据库已更改。
SQL>
2、Oracle 数据
SQL> CREATE USER admin IDENTIFIED BY 123;
用户已创建。
SQL> GRANT dba TO admin;
授权成功。
SQL> quit;
[root@node1 ~]# sqlplus admin/123
SQL*Plus: Release 11.2.0.2.0 Production on 星期三 6月 28 08:06:29 2023
Copyright (c) 1982, 2011, Oracle. All rights reserved.
连接到:
Oracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit Production
SQL>
CREATE TABLE t_person(ID NUMBER(10),NAME VARCHAR2(128) ,PRIMARY KEY(ID));
INSERT INTO t_person VALUES (1, 'zhangsan');
INSERT INTO t_person VALUES (2, 'lisi');
INSERT INTO t_person VALUES (3, 'wangwu');
CREATE TABLE t_dept(ID NUMBER(10),NAME VARCHAR2(128) ,PRIMARY KEY(ID));
INSERT INTO t_dept VALUES (1, 'HR');
INSERT INTO t_dept VALUES (2, 'IT');
commit;
3、启动Doris
[root@node1 doris-2.0]# fe/bin/start_fe.sh --daemon
[root@node1 doris-2.0]# be/bin/start_be.sh --daemon
[root@node1 doris-2.0]# jps
16081 DorisBE
14723 DorisFE
16158 Jps
[root@node1 doris-2.0]#
4、启动Flink
下载相关jar，复制到flink的lib目录
[root@node1 flink-1.17.1]# ll lib
总用量 270772
-rw-r--r-- 1 501 games 196491 5月 19 06:56 flink-cep-1.17.1.jar
-rw-r--r-- 1 501 games 542620 5月 19 06:59 flink-connector-files-1.17.1.jar
-rw-r--r-- 1 501 games 102472 5月 19 07:02 flink-csv-1.17.1.jar
-rw-r--r-- 1 501 games 135975541 5月 19 07:13 flink-dist-1.17.1.jar
-rw-r--r-- 1 root root 8452171 6月 27 23:12 flink-doris-connector-1.17-1.4.0.jar
-rw-r--r-- 1 501 games 180248 5月 19 07:02 flink-json-1.17.1.jar
-rw-r--r-- 1 501 games 21043319 5月 19 07:12 flink-scala_2.12-1.17.1.jar
-rw-r--r-- 1 root root 28702667 6月 28 08:28 flink-sql-connector-oracle-cdc-2.4.1.jar
-rw-r--r-- 1 501 games 15407424 5月 19 07:13 flink-table-api-java-uber-1.17.1.jar
-rw-r--r-- 1 501 games 38191226 5月 19 07:08 flink-table-planner-loader-1.17.1.jar
-rw-r--r-- 1 501 games 3146210 5月 19 06:56 flink-table-runtime-1.17.1.jar
-rw-r--r-- 1 501 games 208006 5月 17 06:07 log4j-1.2-api-2.17.1.jar
-rw-r--r-- 1 501 games 301872 5月 17 06:07 log4j-api-2.17.1.jar
-rw-r--r-- 1 501 games 1790452 5月 17 06:07 log4j-core-2.17.1.jar
-rw-r--r-- 1 501 games 24279 5月 17 06:07 log4j-slf4j-impl-2.17.1.jar
[root@node1 flink-1.17.1]#
启动flink集群
[root@node1 flink-1.17.1]# bin/start-cluster.sh
Starting cluster.
Starting standalonesession daemon on host node1.
Starting taskexecutor daemon on host node1.
[root@node1 flink-1.17.1]# jps
11755 StandaloneSessionClusterEntrypoint
12091 TaskManagerRunner
12190 Jps
[root@node1 flink-1.17.1]#
5、测试同步操作
[root@node1 flink-1.17.1]# bin/flink run \
> -Dexecution.checkpointing.interval=10s \
> -Dparallelism.default=1 \
> -c org.apache.doris.flink.tools.cdc.CdcTools \
> lib/flink-doris-connector-1.17-1.4.0.jar \
> oracle-sync-database \
> --database test \
> --oracle-conf hostname=node1 \
> --oracle-conf port=1521 \
> --oracle-conf username=admin \
> --oracle-conf password=admin123 \
> --oracle-conf database-name=XE \
> --oracle-conf schema-name=ADMIN \
> --including-tables "t_.*" \
> --sink-conf fenodes=node1:8030 \
> --sink-conf username=root \
> --sink-conf password=123456\
> --sink-conf jdbc-url=jdbc:mysql://node1:9030 \
> --sink-conf sink.label-prefix=label \
> --table-conf replication_num=1
Unknown operation oracle-sync-database
[root@node1 flink-1.17.1]#
异常：Unknown operation oracle-sync-database
处理办法：
需要使用最新的 flink-doris-connector 包https://repository.apache.org/content/repositories/snapshots/org/apache/doris/
[root@node1 flink-1.17.1]# ll lib
-rw-r--r-- 1 501 games 196491 5月 19 06:56 flink-cep-1.17.1.jar
-rw-r--r-- 1 501 games 542620 5月 19 06:59 flink-connector-files-1.17.1.jar
-rw-r--r-- 1 501 games 102472 5月 19 07:02 flink-csv-1.17.1.jar
-rw-r--r-- 1 501 games 135975541 5月 19 07:13 flink-dist-1.17.1.jar
-rw-r--r-- 1 root root 8526699 9月 21 12:46 flink-doris-connector-1.17-1.5.0-20230915.034854-2.jar
-rw-r--r-- 1 501 games 180248 5月 19 07:02 flink-json-1.17.1.jar
-rw-r--r-- 1 501 games 21043319 5月 19 07:12 flink-scala_2.12-1.17.1.jar
-rw-r--r-- 1 root root 28702667 6月 28 08:28 flink-sql-connector-oracle-cdc-2.4.1.jar
-rw-r--r-- 1 501 games 15407424 5月 19 07:13 flink-table-api-java-uber-1.17.1.jar
-rw-r--r-- 1 501 games 38191226 5月 19 07:08 flink-table-planner-loader-1.17.1.jar
-rw-r--r-- 1 501 games 3146210 5月 19 06:56 flink-table-runtime-1.17.1.jar
-rw-r--r-- 1 501 games 208006 5月 17 06:07 log4j-1.2-api-2.17.1.jar
-rw-r--r-- 1 501 games 301872 5月 17 06:07 log4j-api-2.17.1.jar
-rw-r--r-- 1 501 games 1790452 5月 17 06:07 log4j-core-2.17.1.jar
-rw-r--r-- 1 501 games 24279 5月 17 06:07 log4j-slf4j-impl-2.17.1.jar
重新执行
[root@node1 flink-1.17.1]# bin/flink run \
> -Dexecution.checkpointing.interval=10s \
> -Dparallelism.default=1 \
> -c org.apache.doris.flink.tools.cdc.CdcTools \
> lib/flink-doris-connector-1.17-1.5.0-20230915.034854-2.jar \
> oracle-sync-database \
> --database test \
> --oracle-conf hostname=node1 \
> --oracle-conf port=1521 \
> --oracle-conf username=admin \
> --oracle-conf password=admin123 \
> --oracle-conf database-name=XE \
> --oracle-conf schema-name=ADMIN \
> --including-tables "t_.*" \
> --sink-conf fenodes=node1:8030 \
> --sink-conf username=root \
> --sink-conf password=123456\
> --sink-conf jdbc-url=jdbc:mysql://node1:9030 \
> --sink-conf sink.label-prefix=label \
> --table-conf replication_num=1
------------------------------------------------------------
The program finished with the following exception:
org.apache.flink.client.program.ProgramInvocationException: The main method caused an error: No tables to be synchronized.
at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:372)
at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:222)
at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:105)
at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:851)
at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:245)
at org.apache.flink.client.cli.CliFrontend.parseAndRun(CliFrontend.java:1095)
at org.apache.flink.client.cli.CliFrontend.lambda$mainInternal$9(CliFrontend.java:1189)
at org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:28)
at org.apache.flink.client.cli.CliFrontend.mainInternal(CliFrontend.java:1189)
at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1157)
Caused by: java.lang.IllegalStateException: No tables to be synchronized.
at org.apache.flink.util.Preconditions.checkState(Preconditions.java:193)
at org.apache.doris.flink.tools.cdc.DatabaseSync.build(DatabaseSync.java:101)
at org.apache.doris.flink.tools.cdc.CdcTools.syncDatabase(CdcTools.java:116)
at org.apache.doris.flink.tools.cdc.CdcTools.createOracleSyncDatabase(CdcTools.java:80)
at org.apache.doris.flink.tools.cdc.CdcTools.main(CdcTools.java:53)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:355)
... 9 more
[root@node1 flink-1.17.1]#
报错：No tables to be synchronized
修改：--including-tables "T_.*"
[root@node1 flink-1.17.1]# bin/flink run \
> -Dexecution.checkpointing.interval=10s \
> -Dparallelism.default=1 \
> -c org.apache.doris.flink.tools.cdc.CdcTools \
> lib/flink-doris-connector-1.17-1.5.0-20230915.034854-2.jar \
> oracle-sync-database \
> --database test \
> --oracle-conf hostname=node1 \
> --oracle-conf port=1521 \
> --oracle-conf username=admin \
> --oracle-conf password=admin123 \
> --oracle-conf database-name=XE \
> --oracle-conf schema-name=ADMIN \
> --including-tables "T_.*" \
> --sink-conf fenodes=node1:8030 \
> --sink-conf username=root \
> --sink-conf password=123456\
> --sink-conf jdbc-url=jdbc:mysql://node1:9030 \
> --sink-conf sink.label-prefix=label \
> --table-conf replication_num=1
------------------------------------------------------------
The program finished with the following exception:
org.apache.flink.client.program.ProgramInvocationException: The main method caused an error: The following SQL query could not be executed: SELECT `SCHEMA_NAME` FROM `INFORMATION_SCHEMA`.`SCHEMATA`;
at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:372)
at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:222)
at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:105)
at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:851)
at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:245)
at org.apache.flink.client.cli.CliFrontend.parseAndRun(CliFrontend.java:1095)
at org.apache.flink.client.cli.CliFrontend.lambda$mainInternal$9(CliFrontend.java:1189)
at org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:28)
at org.apache.flink.client.cli.CliFrontend.mainInternal(CliFrontend.java:1189)
at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1157)
Caused by: org.apache.doris.flink.exception.DorisSystemException: The following SQL query could not be executed: SELECT `SCHEMA_NAME` FROM `INFORMATION_SCHEMA`.`SCHEMATA`;
at org.apache.doris.flink.catalog.doris.DorisSystem.extractColumnValuesBySQL(DorisSystem.java:137)
at org.apache.doris.flink.catalog.doris.DorisSystem.listDatabases(DorisSystem.java:59)
at org.apache.doris.flink.catalog.doris.DorisSystem.databaseExists(DorisSystem.java:67)
at org.apache.doris.flink.tools.cdc.DatabaseSync.build(DatabaseSync.java:102)
at org.apache.doris.flink.tools.cdc.CdcTools.syncDatabase(CdcTools.java:116)
at org.apache.doris.flink.tools.cdc.CdcTools.createOracleSyncDatabase(CdcTools.java:80)
at org.apache.doris.flink.tools.cdc.CdcTools.main(CdcTools.java:53)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:355)
... 9 more
Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at org.apache.flink.util.FlinkUserCodeClassLoader.loadClassWithoutExceptionHandling(FlinkUserCodeClassLoader.java:67)
at org.apache.flink.util.ChildFirstClassLoader.loadClassWithoutExceptionHandling(ChildFirstClassLoader.java:74)
at org.apache.flink.util.FlinkUserCodeClassLoader.loadClass(FlinkUserCodeClassLoader.java:51)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.doris.flink.connection.SimpleJdbcConnectionProvider.getOrEstablishConnection(SimpleJdbcConnectionProvider.java:52)
at org.apache.doris.flink.catalog.doris.DorisSystem.extractColumnValuesBySQL(DorisSystem.java:121)
... 20 more
[root@node1 flink-1.17.1]#
缺少mysql驱动，flink的lib目录添加mysql-connector-java-5.1.49.jar
补充：其他错误
Caused by: java.sql.SQLException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
解决办法： 查询SID值select instance_name from v$instance;
最后执行成功：
[root@node1 flink-1.17.1]# bin/flink run \
> -Dexecution.checkpointing.interval=10s \
> -Dparallelism.default=1 \
> -c org.apache.doris.flink.tools.cdc.CdcTools \
> lib/flink-doris-connector-1.17-1.5.0-20230915.034854-2.jar \
> oracle-sync-database \
> --database test \
> --oracle-conf hostname=node1 \
> --oracle-conf port=1521 \
> --oracle-conf username=admin \
> --oracle-conf password=admin123 \
> --oracle-conf database-name=XE \
> --oracle-conf schema-name=ADMIN \
> --including-tables "T_.*" \
> --sink-conf fenodes=node1:8030 \
> --sink-conf username=root \
> --sink-conf password=123456\
> --sink-conf jdbc-url=jdbc:mysql://node1:9030 \
> --sink-conf sink.label-prefix=label \
> --table-conf replication_num=1
Thu Sep 21 13:06:59 EDT 2023 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
Job has been submitted with JobID fd244bcb10f06e5aa801d2708441bb86
登录Doris查看同步效果
[root@node1 doris-2.0]# mysql -h192.168.203.101 -P9030 -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.99 Doris version doris-2.0.1.1-ea0bfb2
Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> use test;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+----------------+
| Tables_in_test |
+----------------+
| T_DEPT |
| T_PERSON |
+----------------+
2 rows in set (0.00 sec)
mysql> select * from T_PERSON;
Empty set (0.29 sec)
mysql> select * from T_DEPT;
Empty set (0.06 sec)
6、同步成功
bin/flink run \
-Dexecution.checkpointing.interval=10s \
-Dparallelism.default=1 \
-c org.apache.doris.flink.tools.cdc.CdcTools \
lib/flink-doris-connector-1.17-1.5.0-20230915.034854-2.jar \
oracle-sync-database \
--database test \
--oracle-conf hostname=node1 \
--oracle-conf port=1521 \
--oracle-conf username=admin \
--oracle-conf password=123 \
--oracle-conf database-name=XE \
--oracle-conf schema-name=ADMIN \
--including-tables "T_.*" \
--sink-conf fenodes=node1:8030 \
--sink-conf username=root \
--sink-conf password=123456\
--sink-conf jdbc-url=jdbc:mysql://node1:9030 \
--sink-conf sink.label-prefix=label \
--table-conf replication_num=1
查看Flink中运行的Job http://192.168.203.101:8081/
7、测试新增记录同步
SQL> INSERT INTO t_person VALUES (4, 'test_user');
已创建 1 行。
SQL> INSERT INTO t_dept VALUES (3, 'CS');
已创建 1 行。
SQL> commit;
提交完成。
SQL>
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