oracle н¨Óû§¡¢±í¿Õ¼ä¡¢ÊÚȨ
1£®½¨±í¿Õ¼ä
create tablespace OSDB datafile 'F:\oracle\oradata\glsqjz\OSDB.ora' size 100m reuse default storage(initial 500k next 500k pctincrease 20);
2£®½¨Óû§
create user OSUSER identified by OSUSER;//identified by ºóÃæµÄÊÇÃÜÂë£¬Ç°ÃæµÄÊÇÓû§Ãû
3£®Óû§ÊÚȨ
grant resource,connect,RECOVERY_CATALOG_OWNER to OSUSER ;
grant create table to OSUSER ;
alter user OSUSER quota unlimited ON OSDB;
alter user OSUSER default tablespace OSDB;
4£®É¾³ý±í¿Õ¼ä
DROP TABLESPACE TableSpaceName INCLUDING CONTENTS AND DATAFILES;
5£®É¾³ýÓû§
DROP USER User_Name CASCADE
6£®É¾³ý±íµÄ×¢ÒâÊÂÏî
ÔÚɾ³ýÒ»¸ö±íÖеÄÈ«²¿Êý¾Ýʱ£¬ÐëʹÓÃTRUNCATE TABLE ±íÃû;ÒòΪÓÃDROP TABLE£¬DELETE * from ±íÃûʱ£¬TABLESPACE±í¿Õ¼ä¸Ã±íµÄÕ¼Óÿռ䲢δÊÍ·Å£¬·´¸´¼¸´ÎDROP£¬DELETE²Ù×÷ºó£¬¸ÃTABLESPACEÉϰÙÕ׵Ŀռä¾Í±»ºÄ¹âÁË¡£
Ïà¹ØÎĵµ£º
ËäÈ»ÕâÊÇÎÒÕÒµ½×îÏêϸµÄÅäÖÃÃèÊö£¬µ«Êdz¢ÊÔ»¹ÊÇûÓгɹ¦¡£
1.ÏÂÔØOracle Client Package
.
´Ó
http://www.oracle.com/technology/software/tech/oci/instantclient/htdocs/winsoft.html
ÏÂÔØ
Instant
Client Package – Basic
°ü
(
±ê×¢
:All files
required to run OCI, OCCI, and JDBC-OC ......
OracleµÄtrunc º¯ÊýÒ»°ãÓÃÀ´ ¶ÔÈÕÆÚºÍʱ¼ä½øÐнØÈ¡¡£
1¡¢Êý×Ö´¦Àí ¡£½ØÈ¡
select trunc(5.75),trunc(5.75,1),trunc(5.75,-1),trunc(556.234,-2) from dual;
Êä³ö:
TRUNC(5.75) TRUNC(5.75,1) TRUNC(5.75,-1) TRUNC(556.234,-2)
----------- ------------- -------------- ----- ......
OracleÓï¾äÓÅ»¯£µ£³¸ö¹æÔòÏê½â(1)
Oracle sql ÐÔÄÜÓÅ»¯µ÷Õû 1. Ñ¡ÓÃÊʺϵÄORACLEÓÅ»¯Æ÷
ORACLEµÄÓÅ»¯Æ÷¹²ÓÐ3ÖÖ£º
a. RULE £¨»ùÓÚ¹æÔò£©
b. COST £¨»ùÓڳɱ¾£©
c. CHOOSE £¨Ñ¡ÔñÐÔ£©
ÉèÖÃȱʡµÄÓÅ»¯Æ÷£¬¿ÉÒÔͨ¹ý¶ ......
select a.constraint_name, a.table_name, b.constraint_name
from user_constraints a, user_constraints b
where a.constraint_type = 'R'
and b.constraint_type = 'P'
and a.r_constraint_name = b.constraint_name
P ´ú±íÖ÷¼ü
R ´ú±íÍâ¼ü ......
ÔÚoracleÖд¦ÀíÈÕÆÚ´óÈ«
TO_DATE¸ñʽ
Day:
dd number 12
dy abbreviated fri
day spelled out friday
ddspth spelled out, ordinal twelfth
Month:
mm number 03
mon abbreviated mar ......