Tuning 05 Sizing other SGA Structure

Redo Log Buffer Content

• The Oracle server processes copy redo entries from the user’s memory space to the redo log buffer for each DML or DDL statement.
• The redo entries contain the information necessary to reconstruct or redo changes made to the database by INSERT, UPDATE, DELETE, CREATE, ALTER or DROP opeartions. They are used for database recovery. They take up continuous, sqeuential space in the buffer.