The sizes of the instance memory structures affect database performance and are controlled by initialization parameters.
Upon installation, you can let the database manage memory for you automatically, or you can choose to manually configure the instance memory structures. If you choose manual memory management, then Oracle Database provides advisors to help you determine appropriate values for memory parameters.
The following sections describe the two important memory areas that you can monitor and size:
See Also:
Oracle Database Concepts and Oracle Database Administrator's Guide for more information about Oracle Database memory architecture