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Tuesday, October 27, 2009

J2EE Engine : JControl & JCmon

JControl
JControl starts, stops, and monitors the processes of a Java instance - primarily the server and dispatcher processes.
JControl restarts terminated processes, ends hanging processes, and sends a shutdown signal to Java instances.
JControl starts the JLaunch processes, which in turn start Java nodes such as dispatchers or servers.
JControl starts a Java instance bootstrap process with parameters that are defined in the file bootstrap.properties (/usr/sap///j2ee/cluster/bootstrap)

-> Java profiles are stored under \usr\sap\\SYS\profile\DIR_PROFILE

JCmon
The JCmon tool can be used to monitor the JControl process. JCmon is part of the Startup and Control Framework, and is located in the JControl/JLaunch home directory, that is, in the executable directory /usr/sap///j2ee/os_libs.
JCmon can be started with the command JCmon pf=.

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