Performance of Inserting Rows with a Regular Statement

<< Java DB (Derby) - PreparedStatement

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This section describes how to measure the performance of inserting rows using a Statement object.

To compare the performance result from the previous result with regular Statement objects. I wrote the following Java program to measure the performance of inserting rows using a regular Statement object into an empty table:

/**
 * DerbyPerformanceRegularStatement.java
 * Copyright (c) 2007 by Dr. Herong Yang. All rights reserved.
 */
import java.util.*;
import java.sql.*;
import javax.sql.*;
import javax.naming.*;
public class DerbyPerformanceRegularStatement {
  public static void main(String [] args) {
    Connection con = null;
    try {
      Hashtable env = new Hashtable();
      env.put(Context.INITIAL_CONTEXT_FACTORY, 
        "com.sun.jndi.fscontext.RefFSContextFactory");
      env.put(Context.PROVIDER_URL, "file:/local/fscontext");
      Context ctx = new InitialContext(env);
      DataSource ds = (DataSource) ctx.lookup("DerbyTestDB");
      con = ds.getConnection();

// Delete all rows from the table
      Statement sta = con.createStatement();
      sta.executeUpdate("DELETE FROM Profile");

// Start the test
     int count = 10000;
     long t1 = System.currentTimeMillis();

// Regular Statement to insert rows
      Statement rs = con.createStatement();
      Random r = new Random();
      for (int i=0; i<count; i++) {
        rs.executeUpdate("INSERT INTO Profile (FirstName, LastName)"
          +" VALUES ('"+Integer.toHexString(r.nextInt(9999))
          +"', '"+Integer.toHexString(r.nextInt(999999))+"')");
      }
      rs.close();

// End the test
     long t2 = System.currentTimeMillis();
     System.out.println("Regular Statement insert "+count
         +" rows with "+(t2 -t1) +" milliseconds");

      con.close();        
    } catch (Exception e) {
      System.err.println("Exception: "+e.getMessage());
      e.printStackTrace();
    }
  }
}

Here is the result on a Windows XP system with a 997MHz processor. You should compare this with the result from other performance tutorials.

Regular Statement insert 10000 rows with 47531 milliseconds

Comparing with PreparedStatement, regular Statement is about 6 times slower, see the table below:

Statement           # of inserts   Time in ms.   Comparison
PreparedStatement   10000           7953         100%
Regular Statement   10000          47531         598%

Sections in This Chapter

PreparedStatement Overview

PreparedStatement with Parameters

PreparedStatement in Batch Mode

Performance of Inserting Rows with a PreparedStatement

Performance of Inserting Rows with a Regular Statement

Performance of Inserting Rows with a ResultSet