[Question][Oracle实时同步数据] Oracle作源端时，可以同步 insert，无法同步 delete 和 update

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### Description

我尝试使用ChunJun的master（对应 1.12_release版本），使用sql进行数据同步，期待实现 Oracle 到 Tidb 或者 Oracle 到 Mysql 的数据实时同步，下边是我的SQL文件示例。
我的启动命令： sh /opt/chunjun/bin/chunjun-local.sh -jobType sync -job /opt/chunjun/job/oracle-to-mysql-mytest.sql

程序正常运行，但是只能同步 Oracle表里的 insert 操作，无法同步 update 和 delete 操作。

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