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

Oracle10g Grid Computing with RAC
Chapter 12 - RAC Design Considerations

Using Locally Managed Tablespaces

For example, tables with relatively high insert rates can be placed in a tablespace with a 10MB uniform extent size. On the other hand, small tables with limited DML activity can be placed in a tablespace with a 100K uniform extent size. For an existing system, where tablespaces are not organized by segment size, this type of configuration can require significant reorganization efforts with limited benefits. For that reason, compromise by making most of the tablespaces locally managed, with AUTOALLOCATE instead of UNIFORM extent allocation.

Minimizing Table Locks to Optimize Performance

For RAC, table locks are coordinated through global inter-instance communication. Due to the fact that properly designed applications do not need to lock entire tables, table locks can be disabled to improve locking efficiency with minimal adverse side effects. Essentially, there are two methods for disabling table locks:

  • Disabling table locks for individual tables.

  • Setting dml_locksto zero.

Let's examine these methods.

Disabling Table Locks for Individual Tables

To prevent users from acquiring individual table locks, use the following statement:

ALTER TABLE table_name DISABLE TABLE LOCK


For more information, see the book Oracle 11g Grid and Real Application Clusters 30% off if you buy it directly from Rampant TechPress . 

Written by top Oracle experts, this RAC book has a complete online code depot with ready to use RAC scripts.


Remote DBA Services

Burleson Consulting can offer world-class remote Oracle database support at super-affordable prices.

Our remote Oracle DBA service provides 100% of the remote Oracle database administration needs for your company, and includes 24x7 access to our staff of 100% OCP Certified Oracle DBAs. 

We require a 12 month service commitment and include the following services:

  • Initial configuration review and problem identification
  • Installation of Oracle statistics collection mechanisms and quarterly database growth summaries
  • Hourly monitoring of your Oracle database for pending problems
  • Periodic performance analysis & identification of tuning activities
  • Twenty Four hour Oracle emergency support
  • Reporting and resolving all serious Oracle alert log messages
  • Free use of the BC TablePack, ServerPack and AuditPack services
  • Quick response emergency support for production database outages
  • Four hours of free remote DBA support every month. You can use these free hours for any DBA activity, including database analysis, system design, production migrations or personal mentoring.

For more information, please visit www.oracle-training.cc.

 
 
 

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.