『管理调优』如何确定一个回滚段被哪个用户使用

col "RBS NAME" form a10

SELECT   r.name "RBS NAME",         s.sid "ORACLE PID",         NVL(s.username, 'NO TRANSACTION')  FROM   v$lock l, v$session s, v$rollname r WHERE   l.sid = s.sid(+)   AND   TRUNC (l.id1(+)/65536) = r.usn   AND   l.type(+) = 'TX'   AND   l.lmode(+) = 6 ORDER BY r.name;

RBS NAME   ORACLE PID NVL(S.USERNAME,'NOTRANSACTION'---------- ---------- ------------------------------RBS0                  NO TRANSACTIONRBS1                  NO TRANSACTIONRBS10                 NO TRANSACTIONRBS11                 NO TRANSACTIONRBS12                 NO TRANSACTIONRBS13              54 SCOTTRBS14                 NO TRANSACTIONRBS15                 NO TRANSACTIONRBS16                 NO TRANSACTIONRBS17                 NO TRANSACTIONRBS18              16 SCOTT

SELECT r.name "RBS NAME",       s.sid "ORACLE PID",       s.username "USER NAME"  FROM v$transaction t, v$session s, v$rollname r WHERE t.addr = s.taddr   AND t.xidusn = r.usn ORDER BY r.name;

RBS NAME   ORACLE PID USER NAME---------- ---------- ------------------------------RBS23              34 SCOTTRBS_TMP            11 SCOTT