1.查询并杀死锁
select t2.username,t2.sid,t2.serial#,t2.logon_time,t3.sql_text
from v$locked_object t1,v$session t2,v$sqltext t3
where t1.session_id=t2.sid
and t2.sql_address=t3.address
order by t2.logon_time;
alter system kill session 'sid,serial#';(sid,serial#为查询字段值);
2.分页
select * from (select rownum r,* from yourtable where rownum < N) a where a.r betweenN1 and N2;
3.用其他表的数据更新
UPDATE (
SELECT T1.BALANCE, T2.MONTH_CUMULATE, T2.QUARTER_CUMULATE, T2.YEAR_CUMULATE
FROM PLSQL_MX_BBHQ_PROCESSED T1, PLSQL_MX_BBHQ_CUMULATE T2
WHERE T1.ACNO = T2.ACNO)
SET
MONTH_CUMULATE = MONTH_CUMULATE + BALANCE ,
QUARTER_CUMULATE = QUARTER_CUMULATE + BALANCE ,
YEAR_CUMULATE = YEAR_CUMULATE + BALANCE ;
UPDATE PLSQL_MX_JJ_CUMULATE T2
SET t2.MONTH_CUMULATE = t2.MONTH_CUMULATE + ( SELECT BALANCE FROM PLSQL_MX_JJ_SUM t1 WHERE t1.acno = t2.acno ),
t2.quarter_cumulate = t2.quarter_cumulate + ( SELECT BALANCE FROM PLSQL_MX_JJ_SUM t1 WHERE t1.acno = t2.acno ),
t2.year_cumulate = t2.year_cumulate + ( SELECT BALANCE FROM PLSQL_MX_JJ_SUM t1 WHERE t1.acno = t2.acno )
WHERE EXISTS ( SELECT BALANCE FROM PLSQL_MX_JJ_SUM t1 WHERE t1.acno = t2.acno);
4.全半角转换
FUNCTION FUNC_FULLTOHALF(INSTR VARCHAR2) RETURN VARCHAR2
IS
V_I INTEGER;
OUTSTR varchar2(20);
BEGIN
V_I := 1;
OUTSTR := '';
WHILE V_I <= LENGTH(INSTR) LOOP
IF ASCII(SUBSTR(INSTR, V_I, 1)) > 41856 AND
ASCII(SUBSTR(INSTR, V_I, 1)) < 41856 + 128 THEN
OUTSTR := OUTSTR || CHR(ASCII(SUBSTR(INSTR, V_I, 1)) - 41856);
ELSE
OUTSTR := OUTSTR || SUBSTR(INSTR, V_I, 1);
END IF;
V_I := V_I + 1;
END LOOP;
RETURN OUTSTR;
EXCEPTION
WHEN OTHERS THEN RETURN OUTSTR;
END FUNC_FULLTOHALF;
5.关于计划dbms_scheduler
a.create job
BEGIN
BEGIN
DBMS_SCHEDULER.CREATE_JOB(job_name
=>
'
delete_goods_job
'
,
job_type
=>
'
STORED_PROCEDURE
'
,
job_action
=>
'
delete_goods
'
,
repeat_interval
=>
'
FREQ=SECONDLY;INTERVAL=6
'
,
enabled
=>
true,
comments
=>
'
deletegoodsdata
'
);
END
;
/
drop job
BEGIN
DBMS_SCHEDULER.DROP_JOB(job_name
=>
'
delete_goods_job
'
);
END
;
/
disable job
BEGIN
DBMS_SCHEDULER.DISABLE(name
=>
'
delete_goods_job
'
);
END
;
/
enable job
BEGIN
DBMS_SCHEDULER.ENABLE(name
=>
'
delete_goods_job
'
);
END
;
/
select jobs
select
*
from
USER_SCHEDULER_JOBS;
query logs(感谢itpub的teddyboy)
select
*
from
ALL_SCHEDULER_JOB_RUN_DETAILS
where
owner
=
'
SCOTT
'
order
by
log_date
desc
delete logs
delete
from
ALL_SCHEDULER_JOB_RUN_DETAILS
where
owner
=
'
SCOTT
'
6.查询约束
select a.constraint_name , --约束名称
a.CONSTRAINT_TYPE ,--约束类型
a.TABLE_NAME ,--表名
b.COLUMN_NAME ,--列名
a.SEARCH_CONDITION --约束内容
from USER_CONSTRAINTS a,USER_CONS_COLUMNS b
where a.CONSTRAINT_NAME=b.CONSTRAINT_NAME
AND a.constraint_name = '要查询约束名称'
