Friday, June 6, 2008
Sharing Memory - Automatically
It used to be a challenge to size the various memory pools that comprise the Oracle System Global Area (SGA) for optimal performance. But that was before Oracle Database 10g. First introduced in Oracle Database 10g and further enhanced in Oracle Database 10g Release 2, Automatic...
Understanding Shared Pool Memory Structures: Tips on How to Optimize Usage and Avoid Errors
The Oracle shared pool provides critical services for sharing of complex objects among large numbers of users. Prior to 10g R1, DBAs often spent much time learning about the shared pool memory management to configure and tune shared pool usage; with the tight time constraints and...
Thursday, June 5, 2008
Tuning Oracle on Windows for Maximum Performance on PowerEdge Servers
Tuning is the art and science of modifying and reconfiguring your system in order to achieve better performance. Tuning and sizing are closely related, in that tuning hardware might require the addition of more hardware. Tuning is done on a live system that is in use or in test,...
Get More from Your Oracle Database: Best Practice Performance Management for Real Results
DBAs are constantly challenged to increase database performance while keeping costs down. This short paper discusses Resource Mapping Methodology (RMM) which defines a systematic process for performing Wait-Event analysis to optimize database performance. It includes a brief overview...
An Oracle Technology Brief: The Oracle Database and Storage
Given the intimate relationship between the Oracle Database and the storage it resides on it is important to ensure the interface between the two is efficient and robust. This is why Oracle and the storage vendors have invested so much in the interface and interrelationship of database...
Oracle in a Nutshell: Performance
Achieving optimal performance from the Oracle database is an art, not a science. Using the appropriate data structures, ensuring that there are adequate resources available, and leveraging the features of the Oracle database can help to avoid bottlenecks that reduce the performance...
Self-Tuning Oracle9i Database: Oracle SGA
As DBAs become more sophisticated in their self-tuning endeavors, many Oracle metrics may become self-tuning. In Oracle Database 10g, more self-tuning capability will be seen than ever before. For example, the dynamic memory allocation features of Oracle Database 10g make it possible...
Understanding Optimization
Improvements in the Oracle Database 10g Optimizer make it even more valuable for tuning.In Oracle Database 10g, the cost-based optimizer (CBO) has two modes—the normal mode and a tuning mode that is invoked by the SQL Tuning Advisor (and many other Oracle Database 10g advisors, such...