eG Monitoring
 

Measures reported by ADAMEvtLogTest

VDM LDAP is an embedded LDAP directory on each VDM Connection Server Standard and Replica instances. It is used as the configuration repository for all VDM configuration data. VDM LDAP for Windows Server 2003 uses Microsoft Active Directory Application Mode (ADAM). This is an embedded LDAP directory bundled with VDM. It installs the following components that are appropriate for VDM:

  • Specific VDM schema definitions
  • Directory information tree (DIT) definitions
  • Access control lists (ACLs)
    VDM LDAP also includes a set of VDM plug-in DLLs to provide automation and notification services for other VDM components. When a Standard instance is installed during VDM Connection Server installation, a new, local stand-alone ADAM instance is created. The schema definitions, DIT definition, ACLs, and so on are loaded and initial data is added. When a VDM Connection Server Replica instance is installed, an ADAM instance is also created locally, but the initial data is retrieved from an existing instance. This means that the initial data is a copy of an existing instance that includes all configuration settings. During a Replica instance installation, a replication agreement is set up so that all VDM Connection Servers in the group share the same configuration data. LDAP changes on any server are replicated to all other servers. This replication functionality is provided by ADAM, which uses the same replication technology as the Active Directory. If errors occur during the installation of VDM-critical components or in the loading or replication of initial configuration data, such errors can significantly impact the performance of the VDM. For further investigation of these issues, administrators typically refer to the ADAM event logs to which the error conditions are logged. Using the AdamEventLog test, administrators can quickly identify ADAM-related errors/warnings that could be affecting the performance of the VDM.  The measures made by this test are as follows:

    Measurement Description Measurement Unit Interpretation
    Error_count This refers to the number of AD error events that were generated. Number A very low value (zero) indicates that the AD server is in a healthy state without any potential problems.

    An increasing trend or high value indicates the existence of problems like loss of functionality or data.

    The detailed diagnosis capability, if enabled, lists the description of specific events.

    Please check the Application Logs in the Event Log Viewer for more details.
    Information_count This refers to the number of information events generated when the test was last executed. Number A change in the value of this measure may indicate infrequent but successful operations performed by the AD server.

    The detailed diagnosis capability, if enabled, lists the description of specific events.

    Warning_count This refers to the number of warnings that were generated when the test was last executed. Number A high value of this measure indicates problems that may not have an immediate impact, but may cause future problems in the Directory Service.

    The detailed diagnosis capability, if enabled, lists the description of specific events.
    Critical_count Indicates the number of critical events that were generated when the test was last executed. Number This measure is applicable only for Windows 2008/Windows Vista/Windows 7 systems.

    A high value of this measure indicates that too many errors have occurred, which the Directory Service cannot automatically recover from.

    The detailed diagnosis capability, if enabled, provides the description of specific events.
    Verbose_count Indicates the number of verbose events that were generated when the test was last executed. Number This measure is applicable only for Windows 2008/Windows Vista/Windows 7 systems.

    Verbose logging provides more details in the log entry, which will enable you to troubleshoot issues better.

    The detailed diagnosis of this measure describes all the verbose events that were generated during the last measurement period.