Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

C#»·¾³ÏÂÍùoracleÖеÄblob×ֶβåÈëÎļþ

Ìí¼ÓÒýÓà           
using System.Data.OracleClient;
Ö÷ÒªÓõ½ÁËÁ½¸öÀà
System.Data.OracleClient.OracleConnection ±íʾһ¸öµ½Êý¾Ý¿âµÄÁ¬½Ó¡£´ËÀàÎÞ·¨¼Ì³Ð¡£
System.Data.OracleClient.OracleCommand   ±íʾÕë¶ÔÊý¾Ý¿âÖ´ÐÐµÄ SQL Óï¾ä»ò´æ´¢¹ý³Ì¡£´ËÀàÎÞ·¨¼Ì³Ð¡£
m_pathΪÒѾ­»ñÈ¡µÄÎļþÃû(full name)
±íFJ_SÖж¨ÒåÁËÈý¸ö×Ö¶ÎXM_ID(varchar(50)),XM_NAME(varchar(50),FJ_FILE(blob)
        private bool InputRecordToOracle(string sFilePath
        {
            if (m_Path == null)
            {
                return false;
            }
            //»ñµÃÎļþÁ÷
            System.IO.FileStream pFS = new System.IO.FileStream(m_Path, FileMode.Open, FileAccess.Read);
            Byte[] pBuffer = new Byte[pFS.Length];//°ÑÎļþת³ÉByteÐͶþ½øÖÆÁ÷
            pFS.Read(pBuffer, 0, pBuffer.Length);//°Ñ¶þ½øÖÆÁ÷¶ÁÈ뻺³åÇø
            pFS.Close();
            try
            {
                string sConnecStr = "Data Source=*;User ID=*;Password=*";
                OracleConnection pConn = new OracleConnection(sConnecStr);
          &n


Ïà¹ØÎĵµ£º

OracleÊý¾Ý¿âÖÐsysºÍsystemÁ½¸öÓû§µÄÇø±ð

     sysÊÇOracleÊý¾Ý¿âÖÐȨÏÞ×î¸ßµÄÕʺţ¬¾ßÓÐcreate databaseµÄȨÏÞ£¬¶øsystemûÓÐÕâ¸öȨÏÞ£¬sysµÄ½ÇÉ«ÊÇsysdba£¬systemµÄ½ÇÉ«ÊÇsysoper¡£
¡¡¡¡ÆäÓà¾ÍÊÇËûÃÇÁ½¸öÓû§¹²ÓеÄȨÏÞÁË£º
¡¡¡¡startup/shutdown/dbaÁ½¸öÓû§¶¼ÊÇ¿ÉÒÔ¹ÜÀíµÄ¡£
¡¡¡¡Æ½Ê±ÓÃsystemÀ´¹ÜÀíÊý¾Ý¿â¾Í¿ÉÒÔÁË¡£Õâ¸öÓû§µÄȨÏÞ¶Ô ......

OracleÊý¾Ý¿â½â³ýscottÓû§Ëø

1¡¢µÇ¼·½·¨:£ºsys or systemµÇ¼
Õ˺ţºsystem
ÃÜÂ룺system as sysdba---------¡·ÃÜÂë+as sysdba
      conn system/password as sysdba
ʹÓÃÃüÁ
sql>alter user scott account unlock;
sql> commit;
Í ......

OracleµÄÓÅ»¯Æ÷ÓÐÁ½ÖÖÓÅ»¯·½Ê½(Ò»)

OracleµÄÓÅ»¯Æ÷ÓÐÁ½ÖÖÓÅ»¯·½Ê½(ÕûÀí), 2010-04-13
RBO·½Ê½£º»ùÓÚ¹æÔòµÄÓÅ»¯·½Ê½(Rule-Based Optimization£¬¼ò³ÆÎªRBO)
  ÓÅ»¯Æ÷ÔÚ·ÖÎöSQLÓï¾äʱ,Ëù×ñÑ­µÄÊÇOracleÄÚ²¿Ô¤¶¨µÄһЩ¹æÔò¡£±ÈÈçÎÒÃdz£¼ûµÄ£¬µ±Ò»¸öwhere×Ó¾äÖеÄÒ»ÁÐÓÐË÷Òýʱȥ×ßË÷Òý¡£
CBO·½Ê½£º»ùÓÚ´ú¼ÛµÄÓÅ»¯·½Ê½(Cost-Based Optimization£¬¼ò³ÆÎªCBO ......

OracleË÷Òý¼¼ÊõµÄÓ¦ÓÃÓëÆÊÎö


Oracle
Ë÷Òý¼¼ÊõµÄÓ¦ÓÃÓëÆÊÎö
×î
½üÕâ¶Îʱ¼ä£¬×ÜÊÇÏëдһЩÓйØÐÔÄܵ÷ÓŵÄÎÄÕ¡£µ«ÊÇ¿àÓÚûÓÐÒ»¸öʵ¼ÊµÄ°¸Àý£¬±¾ÈËÓÖ²»Ô¸¿Õ̸ÀíÂÛ£¬ÒòΪÕâЩÀíÂÛËæ±ãÔÚÍøÉϾÍÄÜÕÒµ½£¬¶øÇÒ»ù±¾ÉÏǧƪһÂÉ£¬
ÒòΪÀíÂÛÉϵÄÄÇЩ¶«Î÷¾ÍÄÇô¶à£¬ÔÙÔõô½²Ò²²»ÈçÒ»¸öʵ¼Ê°¸ÀýÉú¶¯¡£»¹ºÃÉÏÌì²»¸ºÓÐÐÄÈË£¬Ç°Ð©ÌìÈÃÎÒÅöµ½ÁËÒ»¸öʵ¼ÊµÄ°¸Àý¡£Õâ¸ö ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ