Querying Through SNMP

Performance Explorer provides a set of predefined data sources that are queried through SNMP. However, you can add an entry for ORADB-MIB in an SNMP datasource.

Establish a connection to a data source to query through SNMP and create an initial view that contains the measures you want to monitor.

SNMP involves an SNMP agent, which is typically provided by the application vendor. For example, Oracle databases expose data sources using their SNMP agents. The client-side counterpart is Performance Explorer, which collects performance data.

  1. On the Real-Time Monitoring tab, in the Monitor group, click System.
  2. Click Select from predefined Data Sources and then click Next.
  3. Expand the Custom Data folder, click Snmp Data, and then click Next.
  4. In the Hostname field, specify the host running the SNMP agent.
  5. Optional: In the Alias text box, specify the alias name. The alias must be a highly descriptive synonym for the monitored server. It is recommended that you group measures on a particular machine. For example, both WebLogic and IIS might be installed on the same computer. Both servers require monitoring, but the two performance measures must appear in separate menu trees.
  6. Specify the port, community, and version that are appropriate and click Next. If you select version 3, the community field disappears.
  7. If you have selected version 3, specify the authentication details for SNMPv3 and click Next.
  8. Specify the appropriate values to create the measure that you want to monitor as follows:
    1. Select an MIB from the Select a MIB, and object, and get the object's value(s) list box. After you select an MIB, the objects and the object values display in a hierarchical tree below the list box.
    2. Select the object that you want to measure. The object's properties are displayed in the text boxes adjacent to the list box.
    3. Click Get value(s) to check the object's availability.
    If the performance counter is queried successfully, the object's value is displayed in the grid below the list box.
  9. Click Add to add the SNMP measure.
  10. Repeat the previous steps until you have entered all the commands that you require for measure collection, then click Close. The Select displayed measures page opens.
  11. Check the check boxes for those measures that you want to include in the initial monitor view and then click Finish.
A connection to the specified host is established, and an initial view that contains the measures you selected is displayed.
Parent topic: Custom Data Sources