I have created a rule for target availabilites.
When a agent is stopped and restarted. (for stopped im getting one alert saying its down - thats fine). But once the agent is started oem is sending alerts for all targets on the server(like asm ,database,agent,listener,scan listener target), but only agent is restarted only agent up cleared alert should be coming .
im comparing with 11g OEM.
Please provide your thoughts on this.
I haven't seen anything that is out of the ordinary. When an agent is down, all targets are marked unreachable. So they are actually coming back online when the agent comes back online as well. I would suggest reviewing the following whitepaper, specifically the section titled Too Many Emails When a Host Goes Down, to learn more about how to set up the rules to minimize the alerts on Agent Unreachable.