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
sql;">
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
sql;">
select /*+ rule */s.sid,v$transaction t
where l.sid = s.sid(+) and
trunc(l.id1/65536) = r.usn and
l.type = 'TX' and
t.ses_addr = s.saddr and
l.lmode = 6;
集群环境 查询回滚执行进度
sql;">
select /*+ rule */s.sid,t.used_ublk blk
from gv$lock l,gv$session s,gv$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
sql;">
select /*+ rule */s.sid,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，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对编程之家网站的支持！
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