Undo 사용량 확인

1.undo 사용량 확인

SELECT TO_CHAR(s.sid)||',' ||TO_CHAR(s.serial#) sid_serial,
         NVL(s.username, 'None') orauser,
         s.program,
         r.name undoseg,
         ROUND(t.used_ublk * TO_NUMBER(x.value)/1024/1024, 2)||'M' "Undo"
FROM   sys.v_$rollname    r,
        sys.v_$session     s,
        sys.v_$transaction t,
        sys.v_$parameter   x
WHERE s.taddr = t.addr
AND r.usn   = t.xidusn(+)
AND x.name  = 'db_block_size'
ORDER BY (t.used_ublk * TO_NUMBER(x.value/1024)) DESC

 

2. 현재 Rollback 진행률 확인

select OPNAME,TARGET,SOFAR,TOTALWORK,UNITS,START_TIME,TIME_REMAINING, ELAPSED_SECONDS

from v$session_longops where username='SCOTT';

 

 

--출처

https://positivemh.tistory.com/181