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EM 13c: Enterprise Manager Configuration Best Practices (Doc ID 2139083.1)

Last updated on JULY 03, 2023

Applies to:

Enterprise Manager Base Platform - Version and later
Information in this document applies to any platform.


The objective of this document is to summarize the most commonly implemented configuration changes to improve performance and operation of a large Enterprise Manager environment.   A “large” environment is categorized by the number of agents, targets and users.   See the Oracle Enterprise Manager Cloud Control Advanced Installation and Configuration Guide chapter on Sizing for more details on sizing your environment properly.  

The recommendations made in this note have been implemented at various large customer sites and are considered Best Practices for tuning Enterprise Manager.   For further details on the referenced EMDIAG tool, refer to the following documents:


This note provides a list of best practice configuration changes for Enterprise Manager Cloud Control 13c. The recommended configuration changes are broken down into different sections for different EM components in the details section below. The document assumes an Oracle Enterprise Manager Cloud Control 13c install has been setup per Oracle standards.  Discussion of naming conventions, architectural considerations and installation of EM are out of scope. Those topics are addressed in the Enterprise Manager Installation and Configuration Guide


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In this Document
 OMS Recommendations
 Increase JAVA Heap Size
 Repository Recommendations
 Repvfy execute optimize
 Increase Task Workers
 Increase Ping Grace Period
 Maintain Audit Data
 WebLogic Server Recommendations
 Stuck Thread Max Time
 Configuration Recommendations
 Configure E-Mail Notifications for EM related Alerts
 Configure Out-of-Bound Notifications for EM Agent
 Configure Always On Monitoring for Critical Target Notification
 Modify the URL and  Performance Test for the EM Console Service

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