Call for Oracle support & training (800) 766-1884
Free Oracle Tips

Corporate Oracle Training
Custom Oracle Training
Oracle New Features Training
Advanced Oracle DBA Classes
Oracle Tuning Courses
Oracle Tips & Tricks
Oracle Training Links
Oracle Training Links
Oracle Training Links

We are top for USA Oracle Training Clients


Free Oracle Tips


Free Oracle App Server Tips


Oracle support

Oracle training

Oracle tuning


Remote Oracle

Custom Oracle Training


  Oracle Tips by Burleson

Easy Oracle Automation
Chapter 6 - Automatic System Resource Management

Automatic Shared Memory Management (ASMM)

When the automatic SGA memory management feature is enabled in the database, the sizes of different components are flexible to resize to adapt to the needs of the workload without additional intervention. The database automatically distributes the SGA among the various components as required, allowing the system to maximize the consumption of all available memory.

Whenever an application needs more shared pool memory, it will obtain the extra memory from free memory in the buffer cache. Consequently, no out of memory errors are generated until the system has completely run out of memory.

When sga_target is not set or set to zero, the parameters listed above, except for shared_pool_size, behave as in previous releases of Oracle Database. The shared_pool_size will add internal overhead for metadata including data structures for processes and sessions to its value and adjust accordingly. The statistical_level has to be set to TYPICAL or ALL to use ASMM.

The following buffers are considered as manually sized components in Oracle Database 10g:  Log Buffer, Streams Pool which is new in Oracle Database 10g, other buffer caches such as RECYCLE and KEEP), fixed SGA, and internal allocations.

The above text is an excerpt from:

Easy Oracle Automation
Oracle10g Automatic Storage, Memory and Diagnostic Features

ISBN 0-9745993-6-0

by Dr. Arun Kumar R.

Download your Oracle scripts now:

The definitive Oracle Script collection for every Oracle professional DBA


Oracle performance tuning book



Oracle performance tuning software

Oracle performance tuning software
Oracle performance Tuning 10g reference poster
Oracle training in Linux commands
Oracle training Excel


email BC:

Copyright © 1996 -  2014 by Burleson Inc. All rights reserved.

Oracle® is the registered trademark of Oracle Corporation.