When the jcontrol fails before it reaches ‘starting processes’ check first the bootstrap logs.
Bootstrap logs are located in \usr\sap\<SID>\<instance>\work
In these logs you find log-information on the beginning of the startup process of the J2EE engine.
Most important ones are:
dev_bootstrap
dev_dispatcher
dev_server
When the jcontrol fails shortly after start with ‘some processes running’ check first the dispatcher logs.
Dispatcher logs are located in \usr\sap\<SID>\<instance>\ j2ee\cluster\dispatcher\log
Specially check the latest defaulTrace.<x>.trc
When the jcontrol fails some after start with ‘some processes running’ check first the server logs.
Server logs are located in \usr\sap\<SID>\<instance>\ j2ee\cluster\server0\log
Specially check the latest defaulTrace.<x>.trc
