get runtime execution plan of a query

Question

I have an application that executes some sql queries. How can I get execution plan for currently executing query from sqlplus or some other oracle client? I can amend oracle

Answer 1

You can run explain plain on historical queries from the SGA -examples

And listing B.

Example:

SELECT username, prev_sql_id
FROM v$session
WHERE username = 'RDEVALL'  -- example user

SQL ID returned

RDEVALL a1d4z5ruduzrd
RDEVALL avmbutuknvb6j
RDEVALL 75g0tqd9x743y
RDEVALL 5fnkh6c8mqqt3
RDEVALL 75g0tqd9x743y

Pick query ID and use here:

SELECT *
  FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('a1d4z5ruduzrd')); -- replace with sql ID as needed