LDAP Search Timeouts - sustained for 5 minutes - Red(>20)
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 |
LDAP Searches timed out per minute |
Instance Name |
<All> |
Sample Interval |
60 |
Server Role |
Ex14. Common |
Warning Threshold |
20 |
Rule Path |
Microsoft Exchange Server/Exchange 2010/Common Components/Active Directory Access |
Rule Name |
LDAP Search Timeouts - sustained for 5 minutes - Red(>20). |
Explanation
The LDAP Searches timed out per minute performance counter shows the number of LDAP search requests that timed out during the last minute. The average value should be less than 10 and the maximum value should not exceed 20.
This alert indicates that more than 20 LDAP searches per minute timed out for five minutes. This can be caused by a network connectivity loss between the Exchange Server server and the Active Directory domain controller, a problem with the domain controller, or severe performance problems.
User Action
To resolve this error, do one or more of the following:
Verify network connectivity between the Exchange server and the domain controllers it uses.
Verify that the domain controllers the Exchange server uses are available.
Verify that the domain controllers the Exchange server uses are not experiencing severe performance problems. You can investigate CPU usage, as well as disk and memory bottlenecks, on your Active Directory servers.
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.