O'Reilly logo

Oracle Streams 11g Data Replication by Kirtikumar Deshpande

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

CHAPTER 7Logical Change Records

The Logical Change Record (LCR) is a specially formatted message that represents a database change. In previous chapters, LCRs were mentioned frequently when discussing how database changes are captured, propagated, and applied. The capture process and synchronous capture process create an LCR that represents the DDL or DML changes to the database. There are two types of LCRs:

Image Row LCR Represents the change made to a single row (sometimes called DML LCR)

Image DDL LCR Represents the change made by a DDL command

Both these ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required