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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 = b.kaddr;
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select a.username,a.sid,a.serial#,b.id1 from v$session a,v$lock b
         Where b.id1 in
                 (select distinct e.id1 from v$session d,v$lock e where d.lockwait = e.kaddr)
                 And a.sid = b.sid and b.request =0;


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SQL> Select to_char(sysdate,'Y') from dual;
TO_CHAR(SYSDATE,'Y')
--------------------
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SQL> Select to_char(sysdate,'YY') from dual;
TO_CHAR(SYSDATE,'YY')
---------------------
07 ......

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CREATE TABLE salaryByMonth
(
 employeeNo varchar2(20),
 yearMonth varchar2(6),
 salary number
) ;
insert into SALARYBYMONTH (EMPLOYEENO, YEARMONTH, SALARY)
values (1, '200805', 500);
insert into SALARYBYMONTH (EMPLOYEENO, YEARMONTH, SALARY)
values (1, '200802', 150);
in ......
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