Hi,

To find the plan, you could try something like this

SELECT TOP 100 [Average CPU used] = total_worker_time / qs.execution_count,[Total CPU used] = total_worker_time,[Execution count] = qs.execution_count, qs.total_logical_reads TotalPageReads, qs.total_logical_writes TotalPageWrites,last_execution_time,[Individual Query] = SUBSTRING (qt.text,qs.statement_start_offset/2, (CASE WHEN qs.statement_end_offset = -1 THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2 ELSE qs.statement_end_offset END - qs.statement_start_offset)/2),[Parent Query] = qt.text,DatabaseName = DB_NAME(qt.dbid), qp.query_plan

FROM sys.dm_exec_query_stats qs CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) as qt cross apply sys.dm_exec_query_plan (qs.plan_handle) as qp

where

DB_NAME(qt.dbid) = 'MyDB'

and

last_execution_time > '2012-10-01 07:15:00'

ORDER BY [Average CPU used] DESC