oracle工作记录

job

描述 INTERVAL参数值

每天午夜12点 'TRUNC(SYSDATE + 1)'

每天早上8点30分 'TRUNC(SYSDATE + 1) + （8*60+30）/(24*60)'

每星期二中午12点 'NEXT_DAY(TRUNC(SYSDATE ), ''TUESDAY'' ) + 12/24'

每个月第一天的午夜12点 'TRUNC(LAST_DAY(SYSDATE ) + 1)'

每个季度最后一天的晚上11点 'TRUNC(ADD_MONTHS(SYSDATE + 2/24, 3 ), 'Q' ) -1/24'

每星期六和日早上6点10分 'TRUNC(LEAST(NEXT_DAY(SYSDATE, ''SATURDAY"), NEXT_DAY(SYSDATE, "SUNDAY"))) + （6×60+10）/（24×60）'

--表空间使用率

SELECT Upper(F.TABLESPACE_NAME) "表空间名",

D.TOT_GROOTTE_MB "表空间大小(M)",

D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",

To_char(Round(( D.TOT_GROOTTE_MB - F.TOTAL_BYTES ) / D.TOT_GROOTTE_MB * 100, 2), '990.99')

|| '%' "使用比",

F.TOTAL_BYTES "空闲空间(M)",

F.MAX_BYTES "最大块(M)"

FROM (SELECT TABLESPACE_NAME,

Round(Sum(BYTES) / ( 1024 * 1024 ), 2) TOTAL_BYTES,

Round(Max(BYTES) / ( 1024 * 1024 ), 2) MAX_BYTES

FROM SYS.DBA_FREE_SPACE

GROUP BY TABLESPACE_NAME) F,

(SELECT DD.TABLESPACE_NAME,

Round(Sum(DD.BYTES) / ( 1024 * 1024 ), 2) TOT_GROOTTE_MB

FROM SYS.DBA_DATA_FILES DD

GROUP BY DD.TABLESPACE_NAME) D

WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME

ORDER BY 1

alter tablespace ARVATOWMS add datafile '/opt/oracle/oradatas/otwb/WMS03.dbf' size 8000m

表大小

select round(BYTES/1024/1024,2)||'M' from user_segments where segment_name='OMS_ORDER_LOG';

计算时间差

(year(CURRENT_DATE())*365*24+month(CURRENT_DATE())*30*24+day(CURRENT_DATE())*24+hour(CURRENT_TIME())+8+minute(CURRENT_TIME())/60) - (year(lastRemindDate)*365*24+month(lastRemindDate)*30*24+day(lastRemindDate)*24+hour(lastRemindDate)+minute(lastRemindDate)/60)

列出区间内日期

SELECT TRUNC(TO_DATE('2014-01-01', 'yyyy-MM-dd')) + ROWNUM - 1 AS DATES

FROM ALL_OBJECTS

WHERE TRUNC(TO_DATE('2014-01-01', 'yyyy-mm-dd')) + ROWNUM - 1 <

TRUNC(TO_DATE('2020-01-01', 'yyyy-mm-dd'));

列出区间内月份

SELECT TO_CHAR(ADD_MONTHS(TO_DATE('2009-03','YYYY-MM'),ROWNUM-1

),'YYYY-MM') DAY_ID

FROM DUAL

CONNECT BY ROWNUM<=months_between

(to_date('2010-03', 'yyyy-mm'),to_date('2009-03', 'yyyy-mm'))+1