以下是按正常的資料庫查詢操作（沒有做優化），程式碼如下：

package com.test.main;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;

import com.test.jdbc.OracleDBConnection;

public class Test {

	public static void main(String[] args) throws Exception {
		// TODO Auto-generated method stub	
		//得到Oracle資料庫連線
		Connection conn=new OracleDBConnection().getConnection();
		//conn.setAutoCommit(false);//設定為不自動提交
		String sql="select licenseplateno,in_date, gps_time,longitude,latitude,height,speed,direction,eff,car_stat1,car_stat2"
				+ " from GPS_LOG_cxc";
		Statement stmt;
		ResultSet resultSet;
		//記錄起始時間 
		long startTime=System.currentTimeMillis();
		try {
			
			stmt = conn.createStatement();
			resultSet = stmt.executeQuery(sql);
			String licenseplateno="";
			long  index =0;
			while (resultSet.next()) {
				++index;
				licenseplateno=resultSet.getString(1);
				System.out.println(index +">>"+licenseplateno);
				
			}
			resultSet.close();
			stmt.close();
			conn.close();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		//記錄結束時間
		long endTime=System.currentTimeMillis();
		//計算執行時間 
		long time=(endTime-startTime)/1000;
		System.out.println("用時："+time+"秒 ");
	}
}
 

關於資料庫連線

Connection conn=new OracleDBConnection().getConnection();

package com.test.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;

import com.test.jdbc.IDBConnection;
/**
 * 取得Oracle資料庫連線
 * */
public class OracleDBConnection implements IDBConnection {
	//DB Driver
	private static final String DBDRIVER="oracle.jdbc.driver.OracleDriver";
	//DB URL
	private static final String DBURL="jdbc:oracle:thin:@192.168.95.86:1521:orcl"; 
	//DB User
	private static final String DBUSER="xxtmanage";
	//DB Password
	private static final String DBPASSWORLD="xxtinterface";
	//DB Connection
	private Connection conn=null;
	
	//structor
	public OracleDBConnection() {//在構造方法中進行資料庫連線
		System.out.println("OracleDBConnection.OracleDBConnection()");
		try {
			// 載入驅動程式
			Class.forName(DBDRIVER);
			//連線資料庫
			this.conn=DriverManager.getConnection(DBURL, DBUSER, DBPASSWORLD);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			
		}
		
	}
	@Override
	public Connection getConnection(){
		System.out.println("OracleDBConnection.getConnection()");
		return this.conn;
	}
	
	@Override
	public void close(){
		System.out.println("OracleDBConnection.close()");
		if(this.conn!=null){
			try {
				this.conn.close();
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	
	

}
 

19774887>>粵A434XX
19774888>>粵A434XX
19774889>>粵A434XX
19774890>>粵A434XX
19774891>>粵A434XX
19774892>>粵A434XX
19774893>>粵A434XX
19774894>>粵A434XX
19774895>>粵A434XX
19774896>>粵A434XX
19774897>>粵A434XX
19774898>>粵A434XX
19774899>>粵A434XX
19774900>>粵A434XX
19774901>>粵A434XX
用時：2367秒
 

解決方法，留待以後再補充。