oracle 查看语句的执行进度

--oracle 查看语句的执行进度
SELECT SE.SID,
OPNAME,
 TRUNC(SOFAR / TOTALWORK * 100, 2) || '%' AS PCT_WORK,
 ELAPSED_SECONDS ELAPSED,
 ROUND(ELAPSED_SECONDS * (TOTALWORK - SOFAR) / SOFAR) REMAIN_TIME,
 SQL_TEXT
 FROM V$SESSION_LONGOPS SL, V$SQLAREA SA, V$SESSION SE
 WHERE SL.SQL_HASH_VALUE = SA.HASH_VALUE
 AND SL.SID = SE.SID
 AND SOFAR != TOTALWORK
 ORDER BY START_TIME