LDAP long running operations - sustained for 5 minutes - Yellow(>50)
Topic Last Modified: 2007-11-16
The Microsoft Exchange Server 2007 Management Pack for Operations Manager includes a performance data collection engine that is used to query performance counter objects on computers that are running Exchange Server 2007. For this Operations Manager rule, data is collected using the performance counter specified in the Details table.
To review the value of the performance counter that generated this alert, in the Operator Console, select this alert, and then click the Properties tab.
Details
Product Name |
Exchange |
Product Version |
8.0 (Exchange Server 2007) |
Event Source |
MSExchange ADAccess Domain Controllers |
Counter Name |
Long running LDAP operations/Min |
Instance Name |
<All> |
Sample Interval (in seconds) |
60 |
Server Role |
Ex. Common |
Warning Threshold |
>50 |
Critical Error Threshold |
>100 |
MOM Rule Path |
Microsoft Exchange Server/Exchange 2007/Common Components/Active Directory Access |
MOM Rule Name |
LDAP long running operations - sustained for 5 minutes - Yellow(>50). |
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 50 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 warning, 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.
If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.
For More Information
To search the Microsoft Knowledge Base articles based on criteria that generated this alert, visit the Microsoft Help and Support Web site.