EM 12c: emctl upload agent 'EMD upload error:full upload has failed: Upload Recent Sending Statistics' Jstack shows 'org.apache.log4j.spi.RootLogger' Blocked Thread (Doc ID 2025759.1)

Last updated on JUNE 04, 2016

Applies to:

Enterprise Manager Base Platform - Version 12.1.0.4.0 and later
Information in this document applies to any platform.

Symptoms

EM 12c agent upload fails with following message

$/AGENT_INSt/bin/emctl upload agent

Oracle Enterprise Manager Cloud Control 12c Release 3
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
EMD upload error:full upload has failed: Upload Recent Sending Statistics
________________________________
Channel=data send[ms]=2925 fsz=439

Avg send time=2925.0 milliseconds
Backoff Event List
________________________________
Backoff event : channel=Metric Priority Data expiration at 2015-07-17 19:09:14 IST
Backoff event : channel=Metric Data expiration at 2015-07-17 19:08:53 IST
Upload Failure List
_______________________________
Connection Event List
_____________________________
Upload timed out before completion.
Number of files to upload before the uploadNow call: 463, total size (MB): 2.3745117
Remaining number of files to upload: 467, total size (MB): 2.4031343 (TIMEOUT)

From console Setup > Manage Cloud Console > Health Overview page shows 'Backoff Requests'

Cause

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