找到引起磁盘排序的SQL

下面的这些脚本都可以找到引起磁盘排序的SQL。 
SELECT /*+ rule */ DISTINCT a.SID, a.process, a.serial#,
TO_CHAR (a.logon_time, 'YYYYMMDD HH24:MI:SS') LOGON, a.osuser,TABLESPACE, b.sql_text
from v$session a, v$sql b, v$sort_usage c
WHERE a.sql_address = b.address AND a.saddr = c.session_addr;
SELECT a.SID,TABLESPACE, b.sql_text
from v$session a, v$sql b, v$sort_usage c
WHERE a.sql_address = b.address AND a.saddr = c.session_addr;
select a.sid,a.username,a.program,c.sql_text from v$session a,v$tempseg_usage b,v$sql c where a.saddr=b.session_addr and a.sql_address=c.address ;
例子:
SQL> select a.sid,a.username,a.program,c.sql_text from v$session a,v$tempseg_usage b,v$sql c where a.saddr=b.session_addr and a.sql_address=c.address ;
       SID USERNAME   PROGRAM                                                          SQL_TEXT
---------- ---------- ---------------------------------------------------------------- ---------------------------------------------------------------------------
       146 ROBINSON   sqlplus.exe                                                      select a.table_name,a.comments from dict a,dict b order by a.table_name
       145 ROBINSON   sqlplus.exe                    &