SELECT s.SID,
       s.USERNAME,
       sql.OPTIMIZER_MODE,
       sql.CPU_TIME,
       sql.ELAPSED_TIME,
       sql.SQL_TEXT,
       s.SERIAL#
FROM V$SQLAREA sql,
     V$SESSION s
WHERE s.SQL_HASH_VALUE = sql.HASH_VALUE
  AND s.SQL_ADDRESS = sql.ADDRESS
  AND s.USERNAME IS NOT NULL;