Oracle E-Business Suite Sizing

Posted on April 19th, 2008 by Sanjit Anand | Print This Post | Email This Post

This is bit off-line topic(DBA Track) for sizing process in new EBS installation. Line managers, infrastructure heads, IS team, DBA and Implementation Leads must have to understand some key points for sizing as:

• Sizing is a complex, iterative process and must be treated with care during the implementation.
• It should not get conflicted as Sizing a mere calculation rather it a process.
• Sizing is a project in its own right (PC, network, middle-tier and database-tier). Network is often forgotten in sizing projects.
• System sizing and architecture goes a long way in determining the TCO of the software
• It potentially means ability to grow vertically(Module wise) and Horizontally (Data)’
• Customer, hardware vendor and the consulting patner should work together to find the best sizing strategy.
• Your database Size should be based on benchmarks and collective experience of Oracle, H/W vendor and knowledge gained from existing customers.
• Sizing process should not be confused with capacity planning, as both are different parameters.
• Scaling & load balancing requirements can influence the architecture landscape
• Validation of assumptions is key.
• Predicting the batch processing load should not be ignored during an ERP sizing study. Batch loads may be a more important a factor than online requirements.

Factors which decide some key drivers for sizing are:

• Number of named users
• Number of concurrent Users
• Number of Concurrent Manager (CM) Process
• Business Event
• Business Intelligence (BIS)
• Reporting
• Number of years online data retention
• Business volumes
• Platform & H/W preference

Those who are looking some more granular details for sizing, there is one nice document from Oracle.

• Sizing_EBS_LongVersion.ppt
• or download

Metalink Note

• Note 399362.1 :Oracle Applications Release 12 Upgrade Sizing and Best Practices