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ALTER USER usera QUOTA UNLIMITED ON USERS;
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SQL> connect wahm/wwwwww
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SQL> select * from user_sys_privs
2 ;
USERNAME PRIVILEGE ADM
------------------------------ ---------------------------------------- ---
wahm CREATE SESSION NO
wahm EXECUTE ANY PROCEDURE NO
wahm &n
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SELECT /*+ rule */ s.username,
decode(l.type,'TM','TABLE LOCK',
'TX','ROW LOCK',
NULL) LOCK_LEVEL,
o.owner,o.object_name,o.object_type,
s.sid,s.serial#,s.terminal,s.machine,s.program,s.osuser
from v$session s,v$lock l,dba_objects o
WHERE ......
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´ÓÊý¾Ý¿âµÄÉè¼Æ¡¢½¨Ä£¡¢±àÂ룬µ½Ó ......
/*sum()over()*/
--ĬÈϼÆËãËùÓÐÐеĺϼÆ
select t.empno,t.ename,t.sal,t.deptno,sum(t.sal)over()
from scott.emp t;
--partition by·Ö×éºÏ¼Æ
select t.empno,t.ename,t.sal,t.deptno,
sum(t.sal)over(partition by t.deptno)
from scott.emp t
order by t.deptno,t.sal;
......
alter system kill session '²é³öµÄsid,²é³öµÄserial#';
ͨ過數據×ÖµäV$SESSION與V$LOCK來瞭½âÕýÔڵȴý鎖資Ô´µÄÓÃ戶
select a.username,a.sid,a.serial#,b.id1 from v$session a ,v$lock b
Where a.lockwait ......
String sql = "select t.FILE_INFO from T_FILE_DB_DETAIL t where t.id= "
+ fileDBUpDownDetail.getId() + " for update";
rs = stmt.executeQuery(sql);
if (rs.next()) {
// ÔÚweblogicϲ¿Êðʱ£¬ÐèÒª¸ü¸ÄΪBea We ......