LDAP long running operations - sustained for 5 minutes - Red(>100)
Applies to: Operations Manager Management Pack for Exchange 2010
Topic Last Modified: 2011-08-02
The Microsoft Exchange Server 2010 Management Pack for System Center Operations Manager includes a performance data collection engine that is used to query performance counter objects on computers running Exchange 2010. For this Operations Manager rule, data is collected by using the performance counter specified in the Details table.
To review the value of the performance counter that generated this alert, in Operations Manager, double-click this alert, and then click the General tab. Review the description of the alert that includes the variables specific to your environment.
Details
Product Name |
Exchange |
Product Version |
14.0 (Exchange 2010) |
Object Name |
MSExchange ADAccess Domain Controllers |
Counter Name |
Long running LDAP operations/Min |
Sample Interval |
60 |
Server Role |
Ex14. Common |
Critical Error Threshold |
100 |
Rule Path |
Microsoft Exchange Server/Exchange 2010/Common Components/Domain Controller |
Rule Name |
LDAP long running operations - sustained for 5 minutes - Red(>100). |
Explanation
The LDAP Search Time performance counter shows the number of Lightweight Directory Access Protocol (LDAP) operations per minute that took longer than the specified threshold. The default threshold is 15 seconds. When an LDAP operation takes longer than the specified threshold to complete, it is considered a long running operation.
This alert indicates that there were 100 or more long-running LDAP operations per minute for 5 minutes. This alert may be caused by performance problems on your domain controllers or network congestion.
User Action
To resolve this critical error, do one or more of the following:
Ensure that the network performance between the Microsoft Exchange Server computer and the domain controllers it uses is not the bottleneck.
Ensure that the domain controllers Exchange is using are not experiencing performance problems. You can investigate CPU usage, as well as disk and memory bottlenecks, on your Active Directory directory service servers.
Consider using a dedicated Exchange server and a global catalog server for the expansion of dynamic distribution groups and large distribution groups.
If you are having difficulty resolving the issue, contact Microsoft Product Support. For information about contacting support, visit the Contact Us page of the Microsoft Help and Support Web site.
For More Information
If you are not already doing so, consider running the Exchange tools, which have been created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues and improve mail flow. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.