Hi Pradeep,
Error is returning the rc=66
[Thr 8748] JHVM_RegisterNatives: com.sap.bc.krn.perf.PerfTimes
[Thr 8688] JLaunchIExitJava: exit hook is called (rc = 66)
[Thr 8688] **********************************************************************
[Thr 8688] *** ERROR => The Java VM terminated with a non-zero exit code.
[Thr 8688] *** Please see SAP Note 943602 , section 'J2EE Engine exit codes'
[Thr 8688] *** for additional information and trouble shooting.
[Thr 8688] **********************************************************************
[Thr 8688] JLaunchCloseProgram: good bye (exitcode = 66)
It means that system is not able to connect to Database.
Try to open the configtool and if it give a error while opening it. Then there is problem with the SAPSR3DB user.
With Regards
Ashutosh Chaturvedi