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，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脚本之家网站的支持！
