My Oracle Support Banner

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 FEBRUARY 03, 2019

Applies to:

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


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 ( - 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 (, Appendix A  - Interpreting Variables of the Enterprise Manager MIB


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.