Dear Parag,

from o/s owner:
$ emctl status agent
Oracle Enterprise Manager 10g Database Control Release 10.2.0.3.0
Copyright (c) 1996, 2006 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
Agent Version : 10.1.0.5.1
OMS Version : 10.1.0.5.0
Protocol Version : 10.1.0.2.0
Agent Home : /opt/oracle/app/oracle/product/10.2.0/ariepdb2_ariepdb2
Agent binaries : /opt/oracle/app/oracle/product/10.2.0
Agent Process ID : 385156
Parent Process ID : 806944
Agent URL : http://ariepdb2:3938/emd/main
Started at : 2008-10-06 13:13:42
Started by user : oracle
Last Reload : 2008-10-06 13:13:42
Last successful upload : 2008-10-30 08:43:51
Total Megabytes of XML files uploaded so far : 192.37
Number of XML files pending upload : 0
Size of XML files pending upload(MB) : 0.00
Available disk space on upload filesystem : 62.36%
---------------------------------------------------------------
Agent is Running and Ready

from EM console:
Instance2 showing Green up arrow but in instance1 showing Red Down Arrow.

Please advice.

Thanks in advance.

Regards,
dba