Grid Control 10g and 11g - Agent Upload to OMS Fails with Error "ERROR-400|OMS already processing a Metadata or Severity file from this Agent" with ORA-20609 (Doc ID 822475.1)

Last updated on AUGUST 19, 2015

Applies to:

Enterprise Manager Base Platform - Version 10.2.0.1 to 11.1.0.1 [Release 10.2 to 11.1]
Information in this document applies to any platform.
Checked for relevance on Feb-16-2013

Symptoms

The Agent is failing to upload files to the OMS with the following errors in the <AGENT_HOME>/sysman/log/emagent.trc file:

<timestamp> Thread-10986 WARN upload: FxferSend: received http error in header from repository: http://omsmachine.domainname:4889/em/upload/
ERROR-400|OMS already processing a Metadata or Severity file from this Agent. Agent should retry later.ORA-20609: Error obtaining upload lock on emd_url:http://agentmachine.domainname:1830/emd/main/
ORA-06512: at "SYSMAN.EMD_LOADER", line 4581
ORA-06512: at line 1


The 'emctl upload' command returns:

Oracle Enterprise Manager 10g Release 4 Grid Control 10.2.0.4.0.
Copyright (c) 1996, 2007 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
EMD upload error: Failed to upload file A0000001.xml: HTTP error.
Response received: ERROR-400|OMS already processing a Metadata or Severity file from this Agent.
Agent should retry later.ORA-20609: Error obtaining upload lock on
emd_url:http://agentmachine.domain:3872/emd/main/
ORA-06512: at "SYSMAN.EMD_LOADER", line 4430
ORA-06512: at line 1


After a certain amount of time, it is possible that the Agent stops its Metric Collection, as it has too many pending files to upload to the OMS, resulting in the scenario described in
<Note 396238.1> : 'emctl status agent' Command Shows "Collection Status Disabled By Upload Manager".

Cause

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