Hi Raj
1) How would i able to identify queries/query running on SAP System from 10:00--11:00?
2) After identifying query, how would we able to identify which user is trigeering it?
For you both query's you can use the transaction code ST03/ST03N. refer the SCN link about ST03
Workload Monitor (ST03 or ST03N) - MaxDB - SCN Wiki
Check the time profile - refer the link http://www.sap-perf.ca/run-sap-st03n/
2. Could you share the dump details as attachment? & SAP SP & OS/DB versions?
BR
SS