General Suggestions for Tuning Reconciliation (Sun Identity Manager 8.1 System Administrator's Guide)

Sun Identity Manager 8.1 System Administrator's Guide

General Suggestions for Tuning Reconciliation

In general, you can improve Reconciler performance if you do the following:

Avoid using the Configurator user for reconciliation tasks. The Configurator has access to unlimited tasks and can monopolize available resources, which adversely affects concurrent processes.

Instead, use a streamlined, minimal user for reconciliation and Active Sync tasks. Because the subject executing the task is serialized as part of the task, a minimal user takes less space, or overhead, for each task and update in the repository.
Use information on the Reconciler status page (debug/Show_Reconciler.jsp ) to decide which settings to adjust based on queue sizes, available system resources, and performance benchmarks. Be aware that these settings are dependent on the environment.
Use the System Memory Summary page (debug/Show_Memory.jsp ) to see how much total and free memory is available. Reconciliation is a memory-intensive function, and you can use this information to determine whether there is sufficient memory allocated to the JVM. You can also use this page to launch garbage collection or to clear unused memory in the JVM for investigating heap usage.
When you assign user forms to proxy administrators who are performing reconciliations, keep the user forms as simple as possible and only use essential fields. Depending on the schema map, including a field that calculates the waveset.organization attribute is generally sufficient.

Note –
Administrators who need to view or edit the Identity Manager schema for Users or Roles must be in the IDM Schema Configuration AdminGroup and must have the IDM Schema Configuration capability.
Use per-account workflows judiciously. The reconciliation process does not start provisioning tasks for performance reasons by default.

If you must use a per-account workflow task, edit the reconciliation policy to limit the Reconciler’s automatic responses to events of interest only. (See the Situation area of the Edit Reconciliation Policy page.)