¶ÔoracleÖеÄBLOBµÄ²Ù×÷(¶ÁÈ¡£¬Ð´Èë)
½«BLOB±£´æΪ±¾µØÎĵµ£º
/// <summary>
/// ¶Á³öBlob×Ö¶Î
/// </summary>
/// <param name="commandText">sqlÓï¾ä£¬Ö´Ðнá¹ûΪBLOBÊý¾Ý</param>
/// <param name="DocumentAddress">½«Òª°ÑBLOBÊý¾Ý±£´æΪµÄÎĵµµÄ·¾¶</param>
public void ReadBlob(string commandText, string DocumentAddress)
{
try
{
Open();
cmd.Connection = conn;
cmd.CommandType = CommandType.Text;
cmd.CommandText = commandText;
// ÀûÓÃÊÂÎñ´¦Àí£¨±ØÐ룩
OracleTransaction transaction = cmd.Connection.BeginTransaction();
cmd.Transaction = transaction;
reader = cmd.ExecuteReader();
reader.Read();
OracleLob BLOB = reader.GetOracleLob(0);
reader.Close();
FileStream DataStream = new FileStream(DocumentAddress, FileMode.Create);
int length = 30485760;
byte[] Buffer = new byte[length];
int i;
while ((i = BLOB.Read(Buffer, 0, length)) > 0)
{
DataStream.Write(Buffer, 0, i);
}
DataStream.Close();
BLOB.Clone();
cmd.Transaction.Commit();
}
catch (OracleException e)
{
cmd.Transaction.Rollback();
throw e;
}
finally
{
Close();
}
}
½«±¾µØÎĵµ±£´æΪBLOBÀàÐÍ£º
/// <summary>
/// дÈëBlob×Ö¶Î
/// </summary>
/// <param name="commandText">sqlÓï¾ä£¬Ö´Ðнá¹ûΪBLOBÊý¾Ý</param>
/// <param name="DocumentAddress">±¾µØÎĵµµÄ·¾¶</param>
public void WriteBlob(string commandText, string DocumentAddress
Ïà¹ØÎĵµ£º
ËäȻѧϰJavaºÜ¾ÃÁË£¬×Ô¼ºÒ²Á¬½Ó¹ýһЩÊý¾Ý¿â£¬±ÈÈçmysqlÖ®ÀàµÄ£¬Èç½ñÄØ£¬Ò²Ñ§Ï°ÁËÒ»¶Îʱ¼äµÄOracle£¬È»¶øÄØ£¬½ñÌìÊÇÎÒµÚÒ»´ÎÁ¬½ÓOracle£¬ºÙºÙ£¬Ó¦¸Ã»¹²»ËãÌ«³Ù°É¡£
½ñÌìÄØ£¬Óе㱿׾£¬´ó¼ÒĪЦ£¡
ÎÒÕâÊÇÒ»¸ö²éѯÀý×Ó
Ê×ÏÈ£¬Ô ......
1. ×¼±¸ÖªÊ¶£ºORACLEµÄÂß¼´æ´¢¹ÜÀí.
ORACLEÔÚÂß¼´æ´¢ÉÏ·Ö4¸öÁ£¶È:±í¿Õ¼ä,¶Î,ÇøºÍ¿é.
1.1 ¿é:ÊÇÁ£¶È×îСµÄ´æ´¢µ¥Î»,ÏÖÔÚ±ê×¼µÄ¿é´óСÊÇ8K,ORACLEÿһ´ÎI/O²Ù×÷Ò²ÊÇ°´¿éÀ´²Ù×÷µÄ,Ò²¾ÍÊÇ˵µ±ORACLE´ÓÊý¾ÝÎļþ¶ÁÊý¾Ýʱ,ÊǶÁÈ¡¶àÉÙ¸ö¿é,¶ø²»ÊǶàÉÙÐÐ.
1.2 Çø:ÓÉһϵÁÐÏàÁڵĿé¶ø×é³É,ÕâÒ²ÊÇORACLE¿Õ¼ä·ÖÅäµÄ»ù±¾µ¥Î»,¾Ù¸ö ......
¸ù¾ÝǰЩÌìΪij´ó·É»ú¹«Ë¾µ¼Èëij´ó·É»úÉú²úÊý¾ÝµÄ¾Àú£¬×¼±¸Ð´Æª¹ØÓÚOracleµ¼³öÎļþDMP¸ñʽµÄ·ÖÎö£¬½á¹ûÔÚ±¾»úµ¼³öÒ»×éÑÝʾÊý¾Ýʱºò£¬³öÏÖÁË´íÎó£¬Ë³±ã½â¾öÏ¡£
±¾»ú×°µÄÊÇOracle 11g 32bit(11.0.6)µÄClient£¬Ö÷ÒªÊÇΪÁËʹÓÃODT.Net 11.0.6.21£¬Ö§³ÖVS2008¡£µ«ÊDzÉÓÃEXPÃüÁîµ¼³öÊý¾Ý¿âµÄʱºò£¬³öÏÖÁËЩ¹îÒìµÄ´íÎó¡£
Ö´Ð ......
oracleÊý¾Ý¿âÖÐsql»ù´¡
×÷ÕߣºØýÃû תÌù×Ô£º±¾Õ¾Ô´´ ä¯ÀÀ´ÎÊý£º21 ÎÄÕ¼È룺admin
Ò»¡¢¹ØϵÊý¾Ý¿âµÄһЩ¸ÅÄî
¡¡¡¡
¡¡¡¡1¡¢Ö÷¼üµÄÖµÒ»°ã²»¿ÉÒԸıä
¡¡¡¡
¡¡¡¡2¡¢Íâ¼ü£ºÖ¸ÏòÁíÒ»¸ö±í»ò±¾±íµÄÖ÷¼ü»òΨһ¼üµÄ×ֶΡ£Íâ¼üµÄÖµÒ»¶¨ÒªºÍijһÖ÷¼üÏàͬ ......
ORACLEÖУ¬±í¿Õ¼äÊÇÊý¾Ý¹ÜÀíµÄ»ù±¾·½·¨£¬ËùÓÐÓû§µÄ¶ÔÏóÒª´æ·ÅÔÚ±í¿Õ¼äÖУ¬Ò²¾ÍÊÇÓû§ÓпռäµÄʹÓÃȨ£¬²ÅÄÜ´´½¨Óû§¶ÔÏó£®·ñÔòÊDz»³äÐí´´½¨¶ÔÏó£¬ÒòΪ¾ÍÊÇÏë´´½¨¶ÔÏó,Èç±í,Ë÷ÒýµÈ£¬Ò²Ã»Óеط½´æ·Å,Oracle»áÌáʾ:ûÓд洢Åä¶î£®¡¡¡¡Òò´Ë£¬ÔÚ´´½¨¶ÔÏó֮ǰ£¬Ê×ÏÈÒª·ÖÅä´æ´¢¿Õ¼ä.
·ÖÅä´æ´¢£¬¾ÍÒª´´½¨±í¿Õ¼ä£º¡¡¡¡
´´½¨±í¿Õ¼äÊ ......