I am using ColdFusion 9 version 9,0,2,282541. I do not have the option to add JVM parameters from the administrator console as the option "Java and JVM " is not available. So if i want add parameters how to proceed furthur?.
If we add it in the JVM.conf in the server is that enough or what else has to be done.
The jvm.config is what is updated when you edit the Java and JWM section of the administrator.
If you take a backup of the file and then make your changes, followed by a restart of the Coldfusion service, it should apply the changes.
If the service doesn't restart due to an error in the config, you can quickly restore the backup and restart the service again returning it back to what it was.
Are there any log file to check whether the JVM parameters are working properly.
Did CF start as expected? If so, they parameters are probably correct. You can use a tool like VisualVM to monitor the process to see if your initial heap, etc are within the bounds you set. You'll need to monitor your application under load to get a good feeling for what the settings should be. They differ on every app.