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<HEAD><TITLE>FAQ汇萃 >> Oracle 专栏 >> 查看哪些session正在使用哪些回滚段？</title>
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<a href=../list_thread.php?int_attribute=1>FAQ汇萃</a>
>> <a href=../list_thread.php?forumid=20&int_attribute=1>Oracle 专栏</a>
>> 查看哪些session正在使用哪些回滚段？ [<a href=../forum/showthread.php?goto=newpost&threadid=218>查看别人的评论</a>]<br>
<hr><p>由 webmaster 发布于: 2001-02-03 13:41</p><p><img src="images/icons/icon12.gif" alt="Wink" border=0> </p><p>系统环境：
<br>1、操作系统：Windows 2000
<br>2、数据库： Oracle 8i R2 (8.1.6) for NT 企业版
<br>3、安装路径：C:\ORACLE
<br>
<br>测试方法：
<br>打开多个SQL*Plus窗口，一些做一些需要回滚的操作，如insert，delete等，一个执行以下的语句来监视。
<br>SQL语句：
<br>
<br>col 回滚段名 format a10
<br>col SID format 9990
<br>col 用户名 format a10
<br>col 操作程序 format a80
<br>col status format a6 trunc
<br>
<br>SELECT r.name 回滚段名,
<br> s.sid,
<br> s.serial#,
<br> s.username 用户名,
<br> t.status,
<br> t.cr_get,
<br> t.phy_io,
<br> t.used_ublk,
<br> t.noundo,
<br> substr(s.program, 1, 78) 操作程序
<br>FROM sys.v_$session s,sys.v_$transaction t,sys.v_$rollname r
<br>WHERE t.addr = s.taddr and t.xidusn = r.usn
<br>ORDER BY t.cr_get,t.phy_io
<br>/
<br>
<br>
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