Oracle的连接字符串的确切格式是什么？

string conStr = @"server=ORACLE1001;database=Test;uid=admin;pwd=1234";
mycon = new OleDbConnection();
mycon.ConnectionString = ConStr;

conStr = "Provider=OraOLEDB.Oracle.1;server=ORACLE1001;database=Test;uid=admin;pwd=1234;