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1. ÏÂÔØoracleµÄ¿Í»§¶Ë³ÌÐò°ü£¨30M£©
      
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Oracle
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Instant Client Package
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http://www.oracle.com/technology/software/tech/oci/instantclient/htdocs/winsoft.html
½âѹµ½Ò»¸öĿ¼Öм´¿É£¬ÀýÈçc:\oracleclient
2. ÅäÖòÙ×÷ϵͳ»·¾³±äÁ¿
NLS_LANG=SIMPLIFIED CHINESE_CHINA.ZHS16GBK
TNS_ADMIN=C:\oracleclient
3. ÅäÖÃÁ¬½ÓOracleµÄÅäÖá£tnsnames.oraÎļþµ½Ä¿Â¼C:\oracleclient¡£¿ÉÒÔ´Óoracle·þÎñÆ÷¿½±´Ò»¸ö¹ýÀ´¡£
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# tnsnames.ora Network Configuration File: E:\oracle\product\10.2.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORCLProduct =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = prmpatm1.asiapacific.hpqcorp.net)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )
ORCL122 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 16.157.133.122)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )
EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
    )
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
    )
  )
4. °²×°PLSQL Developer
5. ÅäÖÃPLSQL Developer£¨µÚÒ»´Î¿ÉÒÔ²»ÓõǼֱ½Ó½øµ½PLSQL Developer£©
Tools --> Preferences--> Connections,
Oracle HomeÄÚÈÝΪ C:\oracleclient
OCI libraryÄÚÈÝΪ C:\oracleclie


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l         Oracle Database 10g Release 2(10.2.0.1) Software
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unzip 10201_database_linux32.zip
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SQL> select ascii(A) A,ascii(a) a,ascii(0) zero,ascii( ) space from dual;
A A ZERO SPACE
--------- --------- --------- ---------
65 97 48 32
2. CHR
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SQL> select chr(54740) zhao,chr(65) chr65 from dual;
ZH C
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