Reinstall grid control agent, db agent, weblogic agent

Hi,
I installed oem 11g in testing environment. However, I reinstall the oms due to wrong operation. For agent side, I installed grid control agent, db agent, weblogic agent. Any official document can follow to re-install the agent...or I just re-install it by using "fresh installation". Many thx!
Gil

if you want just to reinstall the agent you could delete the $AGENT_HOME directory and cleanup the file "inventory.xml" ($ORACLE_BASE/oraInventory/ContentsXML).
But you could use the GUI of the installer as well and delete the agent the "official" way...
If want to reinstall the OMS, GC repository and/or the WLS as well I would suggest that you take a look into the documentation
under http://download.oracle.com/docs/cd/E11857_01/index.htm
HTH

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    Copyright (c) 1996, 2007 Oracle Corporation. All rights reserved.
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    Oracle Enterprise Manager 10g Release 3 Grid Control 10.2.0.3.0.
    Copyright (c) 1996, 2007 Oracle Corporation. All rights reserved.
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    References
    Note 458033.1
    Title:Problem: Agent Upload Fails: OMS Is Locked and Agent not Secured

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