今天安裝了oracle11g后，寫(xiě)了JDBC測(cè)試程序，一直都連接不上！

一直找不到原因

后來(lái)讀了一下安裝文件中的Readme.txt文檔，汗啊！這個(gè)版本居然把url的訪問(wèn)方式改變了：

Some Useful Hints In Using the JDBC Drivers

-------------------------------------------

Please refer to "JDBC Developer's Guide and Reference" for

details

regarding usage of Oracle's JDBC Drivers.?This

section only offers

useful hints.?These hints are not meant to be

exhaustive.

These are a few simple things that you should do in your JDBC

program:

1. Import the necessary JDBC classes in your

programs that use JDBC.

For

example:

import java.sql.*;

import java.math.*; // if needed

To use

OracleDataSource, you need to do:

import oracle.jdbc.pool.OracleDataSource;

2. Create an OracleDataSource instance.

OracleDataSource ods = new OracleDataSource();

3. set the desired properties if you don't

want to use the

default

properties. Different connection URLs should be

used for

different JDBC drivers.

ods.setUser("my_user");

ods.setPassword("my_password");

For the

JDBC OCI Driver:

To make a bequeath connection, set URL as:

ods.setURL("jdbc:oracle:oci:@");

To make a remote connection, set URL as:

ods.setURL("jdbc:oracle:oci:@");

where is either a

TNSEntryName

or a SQL*net name-value pair defined in tnsnames.ora.

For the JDBC

Thin Driver, or Server-side Thin Driver:

ods.setURL("jdbc:oracle:thin:@");

where is either a string

of the form

//:/,

or a SQL*net name-value pair,

or a TNSEntryName.

For the

JDBC Server-side Internal Driver:

ods.setURL("jdbc:oracle:kprb:");

Note that the trailing ':' is necessary. When you use the

Server-side Internal Driver, you always connect to the

database you are executing in. You can also do this:

Connection conn =

new oracle.jdbc.OracleDriver().defaultConnection();

4. Open a connection to the database with

getConnection()

methods

defined in OracleDataSource class.

Connection conn = ods.getConnection();

------------------------------------------------------------------------

還是得好好看原始文檔啊！

但是還是不明白，為什么突然要改變呢？