Oracle回滚段使用查询代码详解
大批量执行DML语句造成回滚段大量占用,又回退操作,如何直观查询数据回滚情况?
单机环境 查询回滚执行进度
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;
单机环境 查询回滚执行进度
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;
集群环境 查询回滚执行进度
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;
单机环境 查询回滚执行进度
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;
总结
以上所述是小编给大家介绍的Oracle回滚段使用查询代码详解，大家如有疑问可以留言，或者联系站长。感谢亲们支持！！！
