Performance of Inserting Rows with a PreparedStatement

JDBC for Oracle - Herong's Tutorial Examples

∟Performance of Inserting Rows with a PreparedStatement

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

Running SQL statements using PreparedStatement objects is supposed to be faster than using regular Statement objects. To test this, I wrote the following Java program to measure the performance of inserting rows using a PreparedStatement object into an empty table:

/* OraclePerformancePreparedStatement.java
 * Copyright (c) HerongYang.com. All Rights Reserved.
 */
import java.sql.*;
public class OraclePerformancePreparedStatement {
  public static void main(String [] args) {
    Connection con = null;
    try {
      oracle.jdbc.pool.OracleDataSource ds
        = new oracle.jdbc.pool.OracleDataSource();
      ds.setDriverType("thin");
      ds.setServerName("localhost");
      ds.setPortNumber(1521);
      ds.setDatabaseName("XE");
      ds.setUser("Herong");
      ds.setPassword("TopSecret");
      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();

// PreparedStatement to insert rows
      PreparedStatement ps = con.prepareStatement(
  "INSERT INTO Profile (ID, FirstName, LastName)"
  + " VALUES (?, ?, ?)");
      java.util.Random r = new java.util.Random();
      for (int i = 0; i < count; i++) {
        ps.setInt(1,i+1);
        ps.setString(2,Integer.toHexString(r.nextInt(9999)));
        ps.setString(3,Integer.toHexString(r.nextInt(999999)));
        ps.executeUpdate();
      }
      ps.close();

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

      con.close();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}

The table below shows execution results with different computer environments:

macOS 10, 2.6 GHz processor, JDK 15, Oracle 21.3 and odbc11.jar
  PreparedStatement insert 10000 rows with 9962 milliseconds

Windows 10, 3.6 GHz processor, JDK 17, Oracle 21.3 and odbc11.jar
  PreparedStatement insert 10000 rows with 14281 milliseconds

Windows 7, 2.5 GHz processor, JDK 1.8, Oracle 11.2 and odbc6.jar
  PreparedStatement insert 10000 rows with 22574 milliseconds

Windows XP, 997 MHz processor, JDK 1.6, Oracle 10.2 and odbc14.jar
  PreparedStatement insert 10000 rows with 7843 milliseconds