weblogicÏÂÔÚOracleÖд洢clobÀàÐÍÒ»Àý
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 WebLogic BLOB¸ñʽ
// weblogic.jdbc.vendor.oracle.OracleThinBlob blob = (weblogic.jdbc.vendor.oracle.OracleThinBlob) rs
// .getBlob(1);
BLOB blob = (BLOB) rs.getBlob(1);
if (blob != null) {
out = blob.getBinaryOutputStream();
byte[] buf = new byte[8192];// 8K »º´æ
int len;
while ((len = fileInputStream.read(buf)) > 0) {
if (out != null) {
out.write(buf, 0, len);
out.flush();
}
}
}
}
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extent--×îС¿Õ¼ä·ÖÅ䵥λ --tablespace management
block --×îСi/oµ¥Î» --segment management
create tablespace james
datafile '/export/home/oracle/oradata/james.dbf'
size 100M ¡¡¡¡¡¡¡¡¡¡¡¡--³õʼµÄÎļþ´óС¡¡
autoextend On¡¡¡¡¡¡¡¡ --×Ô¶¯Ôö³¤
next 10M¡ ......
1.´´½¨ÁÙʱ±í¿Õ¼ä
CREATE TEMPORARY TABLESPACE Test_temp
TEMPFILE 'E:\Test\TEST_temp.dbf'
SIZE 32M
AUTOEXTEND ON
NEXT 32M MAXSIZE 2048M
EXTENT MANAGEMENT LOCAL;
2.´´½¨Óû§±í¿Õ¼ä
create tablespace TEST
datafile 'E:\TEST\TEST.dbf'
size 100M
autoextend on maxsize   ......
OracleÊý¾Ý¿âÖÐÌṩÁËͬÒå´Ê¹ÜÀíµÄ¹¦ÄÜ¡£Í¬Òå´ÊÊÇÊý¾Ý¿â·½°¸¶ÔÏóµÄÒ»¸ö±ðÃû£¬¾³£ÓÃÓÚ¼ò»¯¶ÔÏó·ÃÎʺÍÌá¸ß¶ÔÏó·ÃÎʵݲȫÐÔ¡£ÔÚʹÓÃͬÒå´Êʱ£¬OracleÊý¾Ý¿â½«Ëü·Òë³É¶ÔÓ¦·½°¸¶ÔÏóµÄÃû×Ö¡£ÓëÊÓͼÀàËÆ£¬Í¬Òå´Ê²¢²»Õ¼ÓÃʵ¼Ê´æ´¢¿Õ¼ä£¬Ö»ÓÐÔÚÊý¾Ý×ÖµäÖб£´æÁËͬÒå´ÊµÄ¶¨Òå¡£ÔÚOracleÊý¾Ý¿âÖеĴ󲿷ÖÊý¾Ý¿â¶ÔÏó£¬Èç±í¡¢ÊÓͼ¡¢Í ......
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 ......
/*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;
......