Question

I am trying to figure out how I could poll for changes that are made to an Oracle Table without using a trigger. The only changes I currently care about are new/inserted records. Any suggestions would be greatly appreciated.

I also don’t really want to have to use other tables to keep track of what has changed.

Thanks!

S

Answer 1

You could use Oracle’s Change Data Capture.

Change Data Capture efficiently identifies and captures data that has been added to, updated, or removed from Oracle Database relational tables, and makes the change data available for use by applications.

Oftentimes, data warehousing involves the extraction and transportation of relational data from one or more source databases into the data warehouse for analysis. Change Data Capture quickly identifies and processes only the data that has changed, not entire tables, and makes the change data available for further use.

Change Data Capture does not depend on intermediate flat files to stage the data outside of the relational database. It captures the change data resulting from INSERT, UPDATE, and DELETE operations made to user tables. The change data is then stored in a database object called a change table, and the change data is made available to applications in a controlled way.