jdbc/ojdbc连oracle的三种方式(转)

文章转自:http://blog.itpub.net/22664653/viewspace-1383092/

前言
  本文是一篇学习笔记,学习如何通过java jdbc /ojdbc 连接oracle的几种方式。
一 使用方法
方法一:使用service_name 连接oracle

jdbc:oracle:thin:@//<host>:<port>/<service_name> 
例如: jdbc:oracle:thin:@//10.10.10.1:1521/TDB
注意这里的格式,@后面有//, 这是与使用SID的主要区别。
对于集群来说,每个节点的SID 是不一样的,但是SERVICE_NAME 确可以包含所有节点。
方法二: 使用SID 连接oracle
jdbc:oracle:thin:@<host>:<port>:<SID> 
Example: jdbc:oracle:thin:@10.10.10.1:1521:testdb1 

注意 该方法已经不做推荐,oracle 官方推荐使用service_name
方法三:使用tnsname 连接oracle

jdbc:oracle:thin:@<TNSName> 
Example: jdbc:oracle:thin:@TESTDB

二 源代码

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class testDB {
public static final String DBDRIVER = "oracle.jdbc.driver.OracleDriver";
# public static final String DBURL = "jdbc:oracle:thin:@127.0.0.1:1521/testdb1"; //sid 格式 testdb1是sid
# public static final String DBURL = "jdbc:oracle:thin:@//127.0.0.1:1521/TDB";   //servicename TDB是service_name
public static final String DBUSER = "test\";
public static final String DBPASSWORD = \"xxx\";
public static final String DBURL = \"jdbc:oracle:thin:@TESTDB\"; //tnsname 格式
public static void main(String[] args) throws Exception
 {
   Connection con = null;
   PreparedStatement ps = null;
   ResultSet rs = null;
  String strSQL = \"select count(*) from tsa_dim_deal\";
# System.setProperty(\"oracle.net.tns_admin\", \"/home/admin/oracle\");//使用tnsname 方法的时候 需要制定tnsname.ora所在的文件夹绝对路径
  Class.forName(DBDRIVER).newInstance();
  con = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD);
  ps = con.prepareStatement(strSQL);
  rs = ps.executeQuery();
while(rs.next())
  {
   System.out.println(\"num:\"+rs.getString(1));
  }
  rs.close();
  ps.close();
  con.close();
 }
}

附录:

[qilong.yangql@rac1 oracle]$ more tnsnames.ora
testdb=
  (DESCRIPTION =
    (FAILOVER = ON)
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.10.1)(PORT = 1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.10.2)(PORT = 1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.10.3)(PORT = 1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.10.4)(PORT = 1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.10.5)(PORT = 1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.10.6)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = tdb)
    )
  )

注意 本文里面 service_name tdb 和tnsname (testdb) 故意设置的不一样.

三  参考:
http://razorsql.com/docs/help_oracle.html

posted @ 2015-06-26 11:05  hello-Jesson  阅读(2359)  评论(0编辑  收藏  举报