Oracle 11g agent fails to upload to Oracle 11g Grid Control

Recently, I built a new Oracle 11gR1 Grid Control Enterprise Manager (OEM) server at work to monitor our complex environments.

All worked fine with agents, OMS and Grid Control until the other day when the agent failed to upload the status to Grid control.

After checking status for the agent and trying to perform a manual upload as listed below,
I received the following errors:

"emctl upload failed: collection status disabled by upload manager"

So I checked on disk space and plenty was available on the filesystem where the agent was located.
After finding a hit on My Oracle Support (MOS) site under Doc ID 396238.1,

I reviewed the following parameters in the emd.properties file under the
AGENT_HOME/sysman/emd directory:

UploadFileSize
UploadMaxBytes
UploadMaxDiskUsedPct

These were set to 2048, 50, and 98 for UploadFileSize, UploadMaxBytes, and UploadMaxDiskUsed by default when I checked the emd.properties file.


Sure enough the default values were too small thus causing the agent upload to fail.

First, I shutdown the agent with the emctl stop agent command.

Next, I changed the parameters to larger values for size of files:

$ cd /home/oracle/agent11g/sysman/config
vi emd.propertiesUploadFileSize=4096


## The maximum number of megabytes(MB) the upload manager will support in the
# upload directory before temporarily disabling collections, logging and tracing
##

UploadMaxBytesXML=500

# The maximum amount (%) of disk space that can be used on the EMD filesystem
# before the following is disabled:
# - Collection of data (upload manager)
# - Logging and tracing
# - Diagnosability traces
#@description=
#@valueType=Int
#@LOV=#@default=98#

UploadMaxDiskUsedPct=99

Then I started the agent and performed manual upload to OEM Grid OMS server:

./emctl status agent
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
Agent Version : 11.1.0.1.0
OMS Version : 11.1.0.1.0
Protocol Version : 11.1.0.0.0
Agent Home : /home/oracle/agent11g/node1
Agent binaries : /home/oracle/agent11g
Agent Process ID : 16864
Parent Process ID : 16828
Agent URL : https://node1:3872/emd/main
Repository URL : https://oem:4900/em/upload
Started at : 2011-09-20 11:33:05
Started by user : oracle
Last Reload : 2011-09-20 11:33:05
Last successful upload : 2011-09-20 13:22:32
Total Megabytes of XML files uploaded so far : 6.27
Number of XML files pending upload : 0
Size of XML files pending upload(MB) : 0.00
Available disk space on upload filesystem : 5.30%
Last successful heartbeat to OMS : 2011-09-20 13:36:26
---------------------------------------------------------------
Agent is Running and Ready

$ ./emctl upload
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
EMD upload completed successfully



Now it works and OEM Grid Control can receive the updates from the agent on the server monitored.Cheers,Ben