Tag Archives: ‘Expert one on one’

Tom 的 Expert one on one 的一个Bug

Tom 的 Expert one on one: Oracle 的一个Bug. 第三章讲到DML所的时候 Tom 用了一个脚本:

tkyte@TKYTE816> select username,
2         v$lock.sid,
3         trunc(id1/power(2,16)) rbs,
4         bitand(id1,to_number('ffff','xxxx'))+0 slot,
5         id2 seq,
6         lmode,
7         request
8  from v$lock, v$session
9  where v$lock.type = 'TX'
10    and v$lock.sid = v$session.sid
11    and v$session.username = USER
12  /
USERNAME        SID        RBS       SLOT        SEQ      LMODE    REQUEST
-------- ---------- ---------- ---------- ---------- ---------- ----------
TKYTE             8          2         46        160          6          0

产品库上最好别直接用这个脚本,很慢很慢的.

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