delphi连接oracle数据库

使用ADO套接字连接：

conn:= '(DESCRIPTION = '+
       '(ADDRESS_LIST = '+
       '(ADDRESS = (PROTOCOL = TCP)(HOST = '+host+')(PORT = '+port+')) '+
       ' ) '+
       '(CONNECT_DATA =   '+
       ' (SERVICE_NAME = '+sid+')'+
       ' ) '+
       ' )';
  GDB:=TCPADOCONNECTION.Create(nil);
  GDB.ConnectionString:='Provider=OraOLEDB.Oracle.1;Password='''+psw+''';Persist Security Info=True;User '+user+''';Data Source='+conn;
  GDB.Connected:=true; 

http://www.doc88.com/p-8018027133711.html

请参阅此文。