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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¡ ......

ORACLE ÁÙʱ±í¿Õ¼äʹÓÃÂʹý¸ßµÄÔ­Òò¼°½â¾ö·½°¸

ORACLE ÁÙʱ±í¿Õ¼äʹÓÃÂʹý¸ßµÄÔ­Òò¼°½â¾ö·½°¸(2009-11-14 19:59:02)
±êÇ©£ºoracle ÁÙʱ±í¿Õ¼ä ʹÓÃÂÊ100 ½â¾ö·½°¸ it
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ÔÚÊý¾Ý¿âµÄÈÕ³£Ñ§Ï°ÖУ¬·¢ÏÖ¹«Ë¾Éú²úÊý¾Ý¿âµÄĬÈÏÁÙʱ±í¿Õ¼ätempʹÓÃÇé¿ö´ïµ½ÁË30G£¬Ê¹ÓÃÂÊ´ïµ½ÁË100%£» ´ýµ÷ÕûΪ32Gºó£¬Ê¹ÓÃÂÊ»¹ÊÇΪ100%£¬µ¼Ö´ÅÅ̿ռäʹÓýôÕÅ¡£¸ù¾ÝÁÙʱ±í¿Õ¼äµÄÖ÷ ......

oracle½â³öËÀËøµÄ°ì·¨

1£ºÒÔÒ»¸öDBAÉí·ÖµÄÓû§µÇ½£¬´ò¿ªÒ»¸öÃüÁî´°¿Ú¡£Ö´ÐÐÃüÁî
SELECT /*+ rule */ s.username,
decode(l.type,'TM','TABLE LOCK',
'TX','ROW LOCK',
NULL) LOCK_LEVEL,
o.owner,o.object_name,o.object_type,
s.sid,s.serial#,s.terminal,s.machine,s.program,s.osuser
from v$session s,v$lock l,dba_objects o
WHERE ......

Oracle·ÖÎöº¯Êý£¨Í¬±È£¬»·±È£¬Àۼƣ¬»ù±È£©

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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