NageswariManikandan,
Sorry for the delayed response.
Can you answer some questions for me to understand the issue better?
1) How did you install ME 9.0 ? Is it using Pulse/All-In One installer/Archived Update site?
2) What was your previous version of ME?
I would recommend you a quick fix using pulse. Please do the following –
1. Open Pulse. (Start > Programs > Pulse > Pulse Explorer or download the same from http://www.poweredbypulse.com)
2. Start Pulse
3. Select Eclipse – Helios realm from the dropdown list.
4. From My Profiles, Select your MyEclipse profile
5. Right click on the same and click on re-install and run
6. This will open a wizard which will guide you through the rest of the steps.
7. Clear the contents of the .log file which is located at <workspace dir>/.metadata/.log. Switch to a new workspace and check if the issue persists. If yes then copy paste the contents of the .log file here.
Let me know how this works for you.