Access to WMI is required for both OS verification while creating an agent, and for collecting OS metrics from the monitored host. In some cases, an access violation on the WMI namespace (error 0x00000005) may occur when the agent connectivity verification fails. The access violation error can occur when the permissions or credentials used to access WMI, and specifically the root\cimv2 namespace and Root\MSCluster (if the machine is included in a cluster), are changed or invalid.
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In the Security for ROOT\CIMV2 dialog box that appears, modify or assign permissions as necessary. |
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Click OK on each of the dialog boxes to close them. |
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If the machine is part of a cluster, repeat the procedure for the ROOT\MSCluster namespace. |
In some cases, when the agent queries WMI to collect metrics on the monitored host, the host’s performance may be affected. When this occurs, the agent log includes the message: Quota violation [SWbemServicesEx]. This error stems from WMI rather than the agent, and has been identified by Microsoft® as a known issue in Windows® Server 2003.
Microsoft® has identified a number of known issues with WMI services in Windows® Server 2008. The following issues may occur:
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In SQL Server 2008, the perfmon counters do not appear under WMI because they do not exist. |
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Using the same OS credentials as the agent uses, run perfmon /wmi on the monitored host. |
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In SQL Server 2008 on Windows Server 2008, if the perfmon counters are missing from WMI, install the following hotfix: http://support.microsoft.com/kb/969531. |
The following parameters can be used to fine tune the Windows Management Instrumentation (WMI) connections made by Foglight® agents. You can set these parameters for Foglight Agent Manager either in the baseline.jvmargs.config file as vmparameter options, or specify them directly as jvm options when starting up Foglight Agent Manager via command line. The values used for these parameters vary from environment to environment and so should be used as reference only.
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