DBMS Resource plan in 11.1

Question

Hello,
I am using 11.1.0.7.0 2-node RAC on RHEL 5 (64 bit). I have enabled MIXED_WORKLOAD_PLAN in both the instances, with a modification to the threshold parameter for interactive group.
I set the action to 'cancel the SQL' for the interactive group if the execution time exceeds 90 seconds. This is working perfect.
My question is - Is there a way to capture the SQL ID that got cancelled along with session ID which was affected by the same? Does this information gets logged anywhere? Please can you help me on this?
Regards,
SK

Answer 1

I cannot help with the exact answer of your question, but I can give you a broader solution that might be of help.
We know that all SQLs that were canceled by the resource plan ran for more than 80 seconds, but less than 100 seconds. We can find all SQLs that run between 80 and 100 seconds and try to figure out which ones were terminated by the resource plan. We can use the resource plan definition, application logs and other application dependant sources to do the filtering. This method is not exact and could be quite labor intensive.
Assuming you are licensed to use ASH, you can use this queries to get all sessions that ran between 75 and 105 seconds:
During the recent past (minutes):
select session_id , session_serial# , sql_id , min_tm , max( exec_time) , count(*)
FROM
( select session_id , session_serial# , sql_id , min_tm , ( max_tm - min_tm ) exec_time
FROM
select session_id , session_serial# , sql_id , sample_time ,
max(sample_time) over (partition by session_id , session_serial# , sql_id ) max_tm,
min(sample_time) over (partition by session_id , session_serial# , sql_id ) min_tm
from v$active_session_history
where sample_time between <begin time > and <end time >
and sql_id is not null) )
where exec_time > interval '75' SECOND 
and exec_time <   interval '105' SECOND  group by session_id, session_serial#, sql_id, min_tm
having count(*) > 70Historically – depending on your ASH settings:
select session_id , session_serial# , sql_id , min_tm , max( exec_time) , count(*)
FROM
( select session_id , session_serial# , sql_id , min_tm , ( max_tm - min_tm ) exec_time
FROM
select session_id , session_serial# , sql_id , sample_time ,
max(sample_time) over (partition by session_id , session_serial# , sql_id ) max_tm,
min(sample_time) over (partition by session_id , session_serial# , sql_id ) min_tm
from dba_hist_active_sess_history
where sample_time between <begin time > and <end time >
and sql_id is not null) )
where exec_time > interval '75' SECOND 
and exec_time <   interval '105' SECOND  group by session_id, session_serial#, sql_id, min_tm
having count(*) > 7