THEME:OGG能够复制迁移包含CLOB字段的table?
【前言】
朋友今天下午问到一个问题:使用OGG做迁移,OGG支不支持CLOB?因自己没有使用过OGG做迁移,但知道OGG属于逻辑迁移方式,可跨平台、跨库版本迁移数据;按照之前的OGG简单了解,貌似OGG不支持大字段的迁移;鉴于此,在Oracle的metalink上搜索了下,本文记录如下讲解之。
Oracle的官方文档“Can GoldenGate Replicate An Oracle Table That Contains Only CLOB Column(s)? (文档 ID 971833.1)
”,给出了解释:OGG并不支持CLOB的复制迁移。详见如下:
APPLIES TO:
Oracle GoldenGate - Version 4.0.0 and later
Information in this document applies to any platform.
Question
Can GoldenGate replicate an Oracle table that contains only CLOB columns?
Answer
To ensure Data Integrity when performing Update and Delete operations, GoldenGate requires each Source and Target Table to have a Unique Identifier. This Unique Identifier can be:
* a Primary Key
* a Unique Index
* one or more columns th