/*
* This sample shows how to use the batching extensions.
* In this example, we set the defaultBatch value from the
* connection object. This affects all statements created from
* this connection.
* It is possible to set the batch value individually for each
* statement. The API to use on the statement object is setExecuteBatch.
*
*/
// You need to import the java.sql package to use JDBC
import java.sql.*;
// You need to import oracle.jdbc.driver.* in order to use the
// API extensions.
import oracle.jdbc.driver.*;
class SetExecuteBatch
{
public static void main (String args [])
throws SQLException
{
// Load the Oracle JDBC driver
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
// Connect to the database
// You can put a database name after the @ sign in the connection URL.
Connection conn =
DriverManager.getConnection ("jdbc:oracle:oci7:@", "scott", "tiger");
Statement stmt = conn.createStatement ();
// Default batch value set to 2 for all prepared statements belonging
// to this connection.
((OracleConnection)conn).setDefaultExecuteBatch (2);
PreparedStatement ps =
conn.prepareStatement ("insert into dept values (?, ?, ?)");
ps.setInt (1, 12);
ps.setString (2, "Oracle");
ps.setString (3, "USA");
// No data is sent to the database by this call to executeUpdate
System.out.println ("Number of rows updated so far: "
+ ps.executeUpdate ());
ps.setInt (1, 11);
ps.setString (2, "Applications");
ps.setString (3, "Indonesia");
// The number of batch calls to executeUpdate is now equal to the
// batch value of 2. The data is now sent to the database and
// both rows are inserted in a single roundtrip.
int rows = ps.executeUpdate ();
System.out.println ("Number of rows updated now: " + rows);
ps.close ();
}
}
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