Oracle UNDO – A Basic Explanation

You might have heard the terms UNDO and REDO thrown around in conversations around space usage. In this tip, let us get a basic idea of what UNDO (formerly called ROLLBACK) is in Oracle. I promise you that this will be an interesting read and you will be happy you read this. Unlike SQL Server … Continue reading Oracle UNDO – A Basic Explanation

Oracle’s APPEND Hint – The Key Secret To Fast BULK Loading With NOLOGGING!

Oracle's logical storage structures: To developers who work with Oracle, the concept of tablespace is familiar.  We create tables and indexes in tablespaces taking appropriate care not to place all of our data into one tablespace. Let us take a quick look at the logical structure of an Oracle database A database has one or … Continue reading Oracle’s APPEND Hint – The Key Secret To Fast BULK Loading With NOLOGGING!