Database Journal
MS SQL Oracle DB2 Access MySQL PostgreSQL Sybase PHP SQL Etc SQL Scripts & Samples Tips Database Forum

» Database Journal Home
» Database Articles
» Database Tutorials
MS Access
SQL Scripts & Samples
» Database Forum
» Slideshows
Free Newsletters:

News Via RSS Feed

Database Journal |DBA Support |SQLCourse |SQLCourse2

Featured Database Articles

Database News

Posted Dec 3, 2002

Determine Data Buffer Size in Oracle9i

By DatabaseJournal.com Staff

[From Builder.com]

The ability to compute the optimal size of data buffers is a critical task for large databases. As databases grow to hundreds of billions of bytes, it becomes economically impractical to cache the entire database in RAM. So Oracle professionals must find the point of diminishing marginal returns for the addition of RAM resources. Being able to do this can save a company hundreds of thousands of dollars in RAM expenses.

Oracle9i introduces a new view, v$db_cache_advice, that can predict the benefit of additional data buffers in the data buffer cache. This view shows the estimated miss rates for twenty potential buffer cache sizes, ranging from 10 percent of the current size to 200 percent of the current size. This allows Oracle DBAs to accurately predict the optimal size for the RAM data buffer.

The article continues at http://builder.com.com/article.jhtml?id=u00320021121brl01.htm&page=1&vf=tt.

Back to Database Journal Home

Database News Archives

Latest Forum Threads
Database News Forum
Topic By Replies Updated
Efficient SQL Server Indexing by Design lcole 0 April 30th, 12:38 PM
Mine Oracle Database, SQL Server and Other Databases with Monarch Data Pump Pro V10.5 lcole 0 April 30th, 12:37 PM
Oracle Database and Oracle Fusion Middleware for Private Social Network Application lcole 0 April 30th, 12:31 PM
Oracle Database Maintains a Stronghold in the DBMS Market lcole 0 April 30th, 12:30 PM