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EM 12c, EM 13c : Some of the Variables (Like oraEMNGEventHostName) in the SNMP Trap Sent by OMS Have Null / Blank Values (Doc ID 1561995.1)

Last updated on JUNE 28, 2018

Applies to:

Enterprise Manager Base Platform - Version 12.1.0.1.0 and later
Information in this document applies to any platform.

Symptoms

In EM Cloud console, SNMP Trap notification method has been configured to send SNMP Traps to third party SNMP Console and the notification method has been invoked in an Incident rule as per the requirement.

When contents of the SNMP Trap received by the third party SNMP Console is reviewed, it is seen that some of the variables like oraEMNGEventHostName (1.3.6.1.4.1.111.15.3.1.1.24.1 - The name of the host on which this event originated) have null / blank values, for example:

As seen in the above example, some of the other MIB's also have null values. Variables in the EM MIB are described in the documentation:
Enterprise Manager Cloud Control Administrator's Guide 12c Release 2 (12.1.0.5), Appendix A  - Interpreting Variables of the Enterprise Manager MIB

Cause

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