EM 12c: OHS1 Target is showing as down in Enterprise Manager 12c Cloud Control with SLB (Doc ID 1569735.1)

Last updated on OCTOBER 20, 2016

Applies to:

Enterprise Manager for Fusion Middleware - Version 12.1.0.1.0 to 12.1.0.4.0
Information in this document applies to any platform.

Symptoms

In Multi OMS env ( More than one OMS behind SLB ) the OHS1 target is UP and Running but in the Cloud Control it shows as DOWN.

Checking the DMS browser ( opmn_component_response ) and Metric Browser response shows 0.

 

After applying Patch 13055259 and Patch 13490778 the target still shows as down in the console.

 

This symptom has been observed on (but is not limited to) an HACMP cluster on IBM AIX hosting EM:

There is a virtual IP/hostname floating from one node to another. The status of Oracle HTTP Server is UP when Cloud Control is running on first node and Down when Cloud Control fails over to second node.

Cause

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