hi, Is all the databases are oracle 10g? The agent of the database you can't reach is of which version. good luck. Nisar Tareen Chirag DBA <chiragdba@xxxxxxxxx> wrote: Hi Team, I m quite new to 10g n its oem. One of the machine is running OEM in my organization and we are seeing everything down on the same machine. OEM is running fine for other machines n Databases. for that machine processes we are getting "The agent of this target is unreachable. " Agent shows its already running on that machine. Which parameter needs to set for resolving the problem. Regards - Chirag __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com