Oracle回滾段使用查詢代碼詳解

2024-08-29 14:00:30

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大批量執(zhí)行DML語句造成回滾段大量占用,又回退操作,如何直觀查詢數(shù)據(jù)回滾情況?

單機(jī)環(huán)境查詢回滾執(zhí)行進(jìn)度

select /*+ rule */s.sid,   r.name rr,    nvl(s.username,'no transaction') us,    s.osuser os,    s.terminal te,    t.used_urec rec,    t.used_ublk blk from v$lock l, v$session s, v$rollname r,v$transaction t where l.sid = s.sid(+) and    trunc(l.id1/65536) = r.usn and    l.type = 'TX' and    t.ses_addr = s.saddr and    l.lmode = 6;

單機(jī)環(huán)境查詢回滾執(zhí)行進(jìn)度

select /*+ rule */s.sid,   r.name rr,    nvl(s.username,'no transaction') us,    s.osuser os,    s.terminal te,    t.used_urec rec,    t.used_ublk blk from v$lock l, v$session s, v$rollname r,v$transaction t where l.sid = s.sid(+) and    trunc(l.id1/65536) = r.usn and    l.type = 'TX' and    t.ses_addr = s.saddr and    l.lmode = 6;

集群環(huán)境查詢回滾執(zhí)行進(jìn)度

select /*+ rule */s.sid,   r.name rr,    nvl(s.username,'no transaction') us,    s.osuser os,    s.terminal te,    t.used_urec rec,    t.used_ublk blk from gv$lock l, gv$session s, v$rollname r,gv$transaction t where l.sid = s.sid(+) and    trunc(l.id1/65536) = r.usn and    l.type = 'TX' and    t.ses_addr = s.saddr and    l.lmode = 6;

單機(jī)環(huán)境查詢回滾執(zhí)行進(jìn)度

select /*+ rule */s.sid,   r.name rr,    nvl(s.username,'no transaction') us,    s.osuser os,    s.terminal te,    t.used_urec rec,    t.used_ublk blk from v$lock l, v$session s, v$rollname r,v$transaction t where l.sid = s.sid(+) and    trunc(l.id1/65536) = r.usn and    l.type = 'TX' and    t.ses_addr = s.saddr and    l.lmode = 6;

總結(jié)

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