Explain plan for SQL running in a session

Question

Hi. Can you get the explain plan information for sql that's currently running in a session? I know I can use the session report to see the active SQL, but I don't know if it's possible to get the explain plan information from there, like you can with TOAD's session manager.

Answer 1

I've put together a query for the v$sql_plan in 9iR2.
Depending on what you use, you can probably drop some columns (eg OTHER and partition columns) and you could drive it from the v$session by getting the hash_value from there for the sid you are interested in :
(select * from v$sql_plan where hash_value =
(select sql_hash_value from v$session where sid=:sid))
select level, optimizer, lpad('_',1*(level-1),'_')||operation operation,
options, object_owner||'.'||object_name obj_name, search_columns,
ltrim(to_char(cardinality,'999,999,999')) no_rows,
ltrim(to_char(bytes/1024,'999,999')) kbytes, cost tot_cost,
object_node link, id, parent_id, other_tag||':'||other other,
partition_start, partition_stop, cpu_cost, io_cost,
access_predicates, filter_predicates,
round(temp_space/(1024*1024),2) temp_space_mb
from (select * from v$sql_plan where hash_value = :hash_val)
start with id=0
connect by prior id = parent_id and prior child_number = child_number
order by child_number, id, position;