ERROR-Agent is blocked. Blocked reason is: Agent is out-of-s

ERROR-Agent is blocked. blocked reason is: Agent is out-of-sync with repository today, a host in the oem grid is restarted, causing the AGENT to be inaccessible. The following ERROR is reported in the view detailed log: ERROR-Agent is blocked. blocked reason is: Agent is out-of-sync with repository. this most likely means that the agent was reinstalled or recovered. please contact an EM administrator to unblock the agent by using Ming an agent resync from the console. please contact EM adminstrator to unblock the agent to upload data using emctl upload agent. the main cause of this error is 1. agent is re-installed or restored from a backup, on the same port number as before.2. The <AGENT_HOME>/sysman/emd/agntstmp.txt is manually deleted for some reason. solution: login to 10.2.0.5 Grid Console as sysman user + Navigate to Setup-> Agents-> Click on problematic Agent name + In Agent home page click on "Resynchronize" Button on right hand top of the page. choose the 'unblock agent' option and click Continue Ensure that the Agent is up and running when attempting the Resynchronization. once the re-synchronization is completed successfully, the Agent shocould be able to communicate with the OMS.