小编Pat*_*ard的帖子

我正在尝试将Oracle数据库连接到Mathematica 8.另一个问题已经说明如何在MySQL数据库中完成它但它对我不起作用:

Needs["DatabaseLink"] AND conn = OpenSQLConnection[JDBC["MySQL(Connector/J)", 
"yourserver/yourdatabase"], "Username" -> "yourusername", "Password" -> "yourpassword"]

我桌面上可以找到以下信息:

filepath = "C:\oracle\ora92\network\ADMIN\tnsnames.ora"; HOST; PORT; username; password;

conn = OpenSQLConnection[JDBC["MySQL(Connector/J)", HOST], "Username" -> username, "Password" -> password]

Error message: JDBC::error: 
    Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. 
    The driver has not received any packets from the server. >>

有谁知道我如何连接或继续？