java Jdbc连接oracle数据库连接测…

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实际环境中发现java连接有问题，写一测试用例，用于测试，内容如下：

Redhatjava  Jdbc连接数据库连接测试
vi test.java

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Date;
import java.text.SimpleDateFormat;
public class test {
public static void main(String arg[]) {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-ddHH:mm:ss");//设置日期格式
int x = 1;
Date datestr = new Date();
String now_str = new SimpleDateFormat("yyyy-MM-ddHH:mm:ss").format(datestr);
Date d1 = new Date();
String now_str1 = new SimpleDateFormat("yyyy-MM-ddHH:mm:ss").format(d1);
Date d2 = new Date();
String now_str2 = new SimpleDateFormat("yyyy-MM-ddHH:mm:ss").format(d2);
while( x < 20 ) {
try {
d1 = new Date();
now_str1 = new SimpleDateFormat("yyyy-MM-ddHH:mm:ss").format(d1);
System.out.println("第" x "次连接数据库，开始连接数据数据库时间点：" now_str1);
x ;
Class.forName("oracle.jdbc.driver.OracleDriver");
String url="jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS = (PROTOCOL =TCP)(HOST = 192.168.93.15)(PORT = 1523))(ADDRESS = (PROTOCOL =TCP)(HOST = 192.168.94.15)(PORT = 1523))(ADDRESS = (PROTOCOL =TCP)(HOST = 192.168.95.17)(PORT = 1523))(CONNECT_DATA =(SERVER =DEDICATED)(SERVICE_NAME =ljg)))";
Connection conn =DriverManager.getConnection(url,"ljg","ljg");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("selectutl_inaddr.get_host_address from dual");
while(rs.next()) {
System.out.println("数据库ip地址为：" rs.getString(1));
}
d2 = new Date();
now_str2 = new SimpleDateFormat("yyyy-MM-ddHH:mm:ss").format(d2);
System.out.println("    连接数据库，连接到数据数据库时间点："now_str2);
long diff = d2.getTime() - d1.getTime();
long days = diff / (1000 * 60 * 60 * 24);
System.out.println("连接数据时长为：                " diff/1000"秒");
System.out.println("连接数据时长为：                " days "天");
conn.close();//关闭数据库

}catch(Exception e) {
System.out.println(e.toString());
}
}
}
}

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