Oracle 鎖表相關查詢與處理

select

*from v$lock
;select
*from v$sqlarea;
select
*from v$session
;select
*from v$process ;
select
*from v$locked_object;
select
*from all_objects;
select
*from v$session_wait;

select b.username,b.sid,b.

serial
#,logon_time from v$locked_object a,v$session b where a.session_id = b.sid order by b.logon_time;

select sid,

serial
#, username, osuser from v$session;

select s.sid, s.

serial
#, s.username, s.schemaname, s.osuser, s.process, s.machine,
s.terminal, s.logon_time, l.
type
from v$session s, v$lock l
where s.sid = l.sid
and s.username is
notnull
order
by sid;

任何dml語句其實產生了兩個鎖，乙個是表鎖，乙個是行鎖。

alter system kill

session
'210,11562'
;

select a.username,

d.object_name,
a.sid,
a.serial
#, c.sql_text,
a.status
, a.sql_id
from v$sql c, v$session a, v$locked_object b, dba_objects d
where a.sql_id = c.sql_id(+)
and a.sid = b.session_id
and b.object_id = d.object_id
and d.owner=upper(
'edbadm'
)and d.object_name = upper(
'dwt_hold_gls'
);

select substr(s2.username,1,

12)"鎖人者(holding user)"
, substr(s2.osuser,1,
8)"鎖人者(osuser)"
, s2.machine,
s1.program 　　,
substr(to_char(h.session_id),1
,5)"鎖人者(sid)"
, p2.spid "鎖人者(spid)"
, d.sql_text,
substr(s1.username,1,
12)"被鎖(waiting user)"
, substr(s1.osuser,1,
8)"被鎖(osuser)"
, s1.machine 　　,
substr(to_char(w.session_id),1
,5)"被鎖(sid)"
, p1.spid "被鎖(spid)"
from 　　sys.v_$process p1 　　,
sys.v_$process p2 　　,
sys.v_$session s1 　　,
sys.v_$session s2 　　,
dba_locks w 　　,
dba_locks h,
v$sql d 　　
where 　　h.mode_held !=
'none'
and h.mode_held !=
'null'
and w.mode_requested !=
'none'
and w.lock_type(+)
= h.lock_type 　　
and w.lock_id1(+)
= h.lock_id1 　　
and w.lock_id2(+)
= h.lock_id2 　　
and w.session_id = s1.sid(+)
and h.session_id = s2.sid(+)
and s1.paddr = p1.addr(+)
and s2.paddr = p2.addr(+)
and s1.sql_id = d.sql_id;``
`

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