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CREATE TABLESPACE "SAMPLE"
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    DATAFILE 'D:\ORACLE\ORADATA\ORA92\LUNTAN.ora' SIZE 5M
REUSE AUTOEXTEND
ON NEXT 51200K MAXSIZE 3900M
EXTENT    MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO 
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µÚÒ»: CREATE TABLESPACE "SAMPLE" ¡¡´´½¨Ò»¸öÃûΪ "SAMPLE" µÄ±í¿Õ¼ä.
    ¶Ô±í¿Õ¼äµÄÃüÃû,×ñÊØOracle µÄÃüÃû¹æ·¶¾Í¿ÉÁË.
   ORACLE¿ÉÒÔ´´½¨µÄ±í¿Õ¼äÓÐÈýÖÖÀàÐÍ:
(1)TEMPORARY: ÁÙʱ±í¿Õ¼ä,ÓÃÓÚÁÙʱÊý¾ÝµÄ´æ·Å;
´´½¨ÁÙʱ±í¿Õ¼äµÄÓï·¨ÈçÏÂ:
CREATE TEMPORARY TABLESPACE "SAMPLE"......
   (2)UNDO : »¹Ô­±í¿Õ¼ä. ÓÃÓÚ´æÈëÖØ×öÈÕÖ¾Îļþ.
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CREATE UNDO TABLESPACE "SAMPLE"......
(3)Óû§±í¿Õ¼ä: ×îÖØÒª,Ò²ÊÇÓÃÓÚ´æ·ÅÓû§Êý¾Ý±í¿Õ¼ä
    ¿ÉÒÔÖ±½Óд³É: CREATE TABLESPACE "SAMPLE"
TEMPORARY ºÍ UNDO ±í¿Õ¼äÊÇORACLE ¹ÜÀíµÄÌØÊâµÄ±í¿Õ¼ä.Ö»ÓÃÓÚ´æ·ÅϵͳÏà¹ØÊý¾Ý.
µÚ¶þ:   LOGGING
ÓÐ NOLOGGING ºÍ LOGGING Á½¸öÑ¡Ïî,
      NOLOGGING: ´´½¨±í¿Õ¼äʱ,²»´´½¨ÖØ×öÈÕÖ¾.
     LOGGING ºÍNOLOGGINGÕýºÃÏà·´, ¾ÍÊÇÔÚ´´½¨±í¿Õ¼äʱÉú³ÉÖØ×öÈÕÖ¾.
ÓÃNOLOGGINGʱ,ºÃ´¦ÔÚÓÚ´´½¨Ê±²»ÓÃÉú³ÉÈÕÖ¾,ÕâÑù±í¿Õ¼äµÄ´´½¨½Ï¿ì,µ«ÊÇûÄÜÈÕÖ¾,Êý¾Ý¶ªÊ§ºó,²»Äָܻ´,µ«ÊÇÒ»°ãÎÒÃÇÔÚ´´½¨±í¿Õ¼äʱ,ÊÇûÓÐÊý¾ÝµÄ,°´Í¨³£µÄ×ö·¨,Êǽ¨Íê±í¿Õ¼ä,²¢µ¼ÈëÊý¾Ýºó,ÊÇÒª¶ÔÊý¾Ý×ö±¸·ÝµÄ,ËùÒÔͨ³£²»ÐèÒª±í¿Õ¼äµÄ´´½¨ÈÕÖ¾,Òò´Ë,ÔÚ´´½¨±í¿Õ¼äʱ,Ñ¡Ôñ NOLOGGING,ÒÔ¼Ó¿ì±í¿Õ¼äµÄ´´½¨ËÙ¶È.
µÚÈý: DATAFILE ÓÃÓÚÖ¸¶¨Êý¾ÝÎļþµÄ¾ßÌåλÖúʹóС.
Èç: DATAFILE 'D:\ORACLE\ORADATA\ORA92\LUNTAN.ora' SIZE 5M
˵Ã÷ÎļþµÄ´æ·ÅλÖÃÊÇ 'D:\ORACLE\ORADATA\ORA92\LUNTAN.ora' , ÎļþµÄ´óСΪ5M.
Èç¹ûÓжà¸öÎļþ,¿ÉÒÔÓöººÅ¸ô¿ª:
DATAFILE 'D:\ORACLE\ORADATA\ORA92\LUNTAN.ora' SIZE 5M,
    'D:\ORACLE\ORADATA\ORA92\dd.ora' SIZE 5M
µ«ÊÇÿ¸öÎļþ¶¼ÐèÒªÖ¸Ã÷´óС.µ¥Î»ÒÔÖ¸¶¨µÄµ¥Î»Îª×¼Èç 5M »ò 500K.
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extent--×îС¿Õ¼ä·ÖÅ䵥λ --tablespace management
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create tablespace james
datafile '/export/home/oracle/oradata/james.dbf'
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Oracle µÄ 9i/10g ÖÐÒѾ­¶ÔÄÚ´æ¹ÜÀíÖð²½×öÁ˺ܴóµÄ¼ò»¯£¬11g Ôò¸ü½øÒ»²½£¬ÒýÈëÁËÒ»¸öеĸÅÄî×Ô¶¯»¯ÄÚ´æ¹ÜÀí(Automatic Memory Management,AMM) . Èç¹û DBA ÕæµÄÏë͵ÀÁµÄ»°£¬Ö»ÐèÒªÉ趨Á½¸ö²ÎÊý¾Í¿ÉÒÔ°Ñ·³ÐĵÄÊÂÇé¶¼½»¸ø Oracle ÕÛÌÚÁË(Ö»Òª DBA ×ã¹»ÐÄ¿í)¡£PGA Óë SGA Ò»Æð¸ã¶¨¡£ÕâÁ½¸ö²ÎÊý·Ö±ðÊÇ£º
MEMORY_TARGET--²Ù×÷Ï ......

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 We ......
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