What Is Oracle Change Data Capture – An Overview
Oracle Change Data Capture (CDC) is a software pattern that detects and captures changes made to an Oracle database. Types of changes include insert, delete, and update actions. This cutting-edge technology is a critical component of the Oracle replication process, where changes made to data in a relational format are identified and recorded to be used in ETL, EAI, and any other applications. There are several benefits of Oracle Change Data Capture . Most important for businesses is cost effectiveness, since Oracle CDC extracts and loads data into the data warehouse or other data storage incrementally in real-time. Hence, there is no need to refresh the full data in bulk whenever any changes are made at the source. Types of Oracle Change Data Capture There are two types of Oracle CDC. Synchronous Change Data Capture In this mode, triggers are inserted into entries in a change table whenever data is modified. These are then activated whenever any changes are identifi...