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

Home
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


 
HTML Text AOL

Free Oracle App Server Tips


 
HTML Text

Oracle support

Oracle training

Oracle tuning

Rednecks!

Remote Oracle

Custom Oracle Training

 

   
  Oracle Tips by Burleson

Maximizing Oracle Block Space Usage

We will have to manage the RAM that is allocated to the data buffers until memory becomes cheap enough to cache the entire database. Properly allocating tables and indexes according to block size is a balancing act. If the data blocks are set too large, valuable buffer space is wasted holding row data that will never be referenced. If the blocks are set too small, Oracle is forced to perform more disk I/O to satisfy a query.

Here are some further general guidelines for allocating data block sizes:

  • Segregate large-table full-table scans – Tables subject to large-table, full-table scans will benefit from the largest supported block size. They should be placed in a tablespace with the largest block size.

  • Set db_recycle_cache_size carefully – If db_cache_size is not set to the largest supported block size, do not use the db_recycle_cache_size parameter. Instead, create a db_32k_cache_size (or whatever the max is), and assign all tables and indexes subject to large-table, full-table scans to the largest data buffer in the database.

Bear in mind that the data dictionary will use the default block size. Make sure that the dictionary (e.g. the SYSTEM tablespace) is always fully cached in a data buffer pool. The block size, per se, of the dictionary is less important than having enough RAM in the SYSTEM tablespace buffer to fully cache all of the dictionary blocks.

 

The above text is an excerpt from "Creating a Self Tuning Oracle Database", by Rampant TechPress.  It is only $9.95 and all scripts in this tips can be immediately downloaded.


Complete Oracle Script Collection Available

BC shares their personal arsenal of Oracle data dictionary scripts in this comprehensive download. With decades of experience using Oracle monitoring scripts and Oracle tuning scripts, we shares our secrets for navigating the Oracle data dictionary.

Packed with more than 680 ready-to-use Oracle scripts, this is the definitive collection for every senior Oracle DBA.

It would take man-years to develop these scripts from scratch, making this download the best value in the Oracle industry.

http://www.rampant-books.com/download_adv_mon_tuning.htm

 

 

 
 
 

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.