Guidelines for Configuring Siebel Application Object Manager Parameters

The following information provides formulas and guidelines for setting the MaxTasks, MaxMTServers, and MinMTServers parameters for your Siebel Application Object Manager components.

Note: All elements in the two formulas shown in Formulas for Calculating Siebel Application Object Manager Parameter Values vary according to your deployment. The number of concurrent users a Siebel Application Object Manager can support depends on factors such as the number of processors, session timeout settings, and the average think time.

Typically, the Siebel Application Object Manager is the only component using significant resources on the Siebel Server computer. If you run multiple server components, or run non-Siebel modules, then a Siebel Application Object Manager on this computer might support fewer concurrent threads.

Follow these general steps to determine how to set these parameter values:

• Determine the total number of concurrent users, based on the average think time and other factors discussed earlier.

• Determine the number of concurrent users that must be supported on a given Siebel Server computer running Siebel Application Object Manager. In the formulas outlined in the following topic, this is the target number of users plus the number of anonymous users, where applicable.

• Determine how many Siebel Server computers are needed to support your concurrent users. This is typically done by Oracle Advanced Customer Services or by platform vendors. Contact your Oracle sales representative to request assistance from Oracle Advanced Customer Services.

Note: Because each customer application implementation is unique, customers are encouraged to engage Oracle Advanced Customer Services for a detailed sizing review to best assess the hardware needs to support their deployment. Oracle Advanced Customer Services has experience from thousands of implementations and works closely with Oracle's Performance and Scalability team to provide sizing guidance.

• Plug your values into the formulas in this topic, then adjust the values to meet any additional criteria. In particular:

  • If your calculated value for MaxMTServers is not an integer, then round up the value to the nearest integer.

  • After you adjust the value of MaxMTServers, if your calculated ratio for MaxTasks divided by MaxMTServers is not an integer, then round up the value of MaxTasks until this ratio is an integer.

• Test your initial parameter settings, such as to gauge the actual number of anonymous users required, then adjust settings further as necessary.