ORA-01000 during inserting xml files

Question

Hello,
I'm using the following jdbc-code to insert xml files into oracle 10gRelease2:
PreparedStatement stmt = null;
Connection conn = getConnection();
try
stmt = conn.prepareStatement("insert into security values (?)");
} catch (Exception e) {
System.err.println(e);
BufferedInputStream bufferedInputStream;
for (int i = 1; i < 500; i++)
String docName = "../../../data/output/security/security" + i+ ".xml";
try
FileInputStream fileInputStream = new FileInputStream(docName);
bufferedInputStream = new BufferedInputStream(fileInputStream, 5000);
XMLType doc = null;
doc = XMLType.createXML(conn, bufferedInputStream);
stmt.setObject(1, doc);
stmt.executeUpdate();
doc.close();
fileInputStream.close();
} catch (Exception e) {
System.out.println(i);
System.err.println(e);
conn.commit();
The code is working fine when I insert less than 340 files. But when I try to insert more than 340 files I'm getting the error:
java.sql.SQLException: ORA-00604: error occurred at recursive SQL level 1
ORA-01000: maximum open cursors exceeded
Where do I open so many cursors? During creating the XMLType?
Thx,
Fabian

Answer 1

I can reproduce this. Looks like a problem with the XMLType.createXML() method. Will confirm and file a bug if necessary. In the mean time the following works and has the same effect
package com.oracle.st.xmldb.pm.examples;
import com.oracle.st.xmldb.pm.common.baseApp.BaseApplication;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.Writer;
import java.sql.SQLException;
import oracle.jdbc.OracleCallableStatement;
import oracle.jdbc.OraclePreparedStatement;
import oracle.jdbc.OracleResultSet;
import oracle.sql.CLOB;
import oracle.xdb.XMLType;
public class BulkInsertXMLType extends BaseApplication
   public static String TABLE_NAME  = "Table";
   public static String SOURCE_FILE = "File";
   public static String ITERATIONS  = "Iterations";
   public void doSomething(String[] Args) throws Exception
      OracleCallableStatement  statement = null;
      String statementText;
      XMLType xml;
      CLOB    clob = CLOB.createTemporary( getConnection(), true, CLOB.DURATION_SESSION);
      // statementText = "insert into " + this.getSetting(this.TABLE_NAME) + " values(:1)";
      statementText = "insert into " + this.getSetting(this.TABLE_NAME) + " values(xmltype(:1))";
      System.out.println("GetXMLType.doSomething : Driver Type = " + this.getDriver() + ". Statement = " + statementText);
      statement = (OracleCallableStatement) getConnection().prepareCall(statementText);
      for (int i=0; i < Integer.parseInt(getSetting(this.ITERATIONS)); i++)
        try {
          InputStream is = new FileInputStream(getSetting(this.SOURCE_FILE));
          // xml = XMLType.createXML(this.getConnection(),is);            
          // statement.setObject(1,xml);
          InputStreamReader reader = new InputStreamReader( is );
          Writer writer = clob.setCharacterStream(0);
          char [] buffer = new char [ clob.getChunkSize() ];
          for( int charsRead = reader.read( buffer );
          charsRead > - 1;
          charsRead = reader.read( buffer ) )
             writer.write( buffer, 0, charsRead );
          writer.close();
          reader.close();
          statement.setCLOB(1,clob);
          boolean result = statement.execute();
          is.close();
          clob.truncate(0);
        catch (SQLException sqle) {
            System.out.println("SQL Exception caught after " + i + "Iterations");
            System.out.println(sqle);
            throw sqle;
      CLOB.freeTemporary(clob);
      statement.close();
      getConnection().commit();
      getConnection().close();
  public static void main (String[] args)
    try
      BulkInsertXMLType example = new BulkInsertXMLType();
      example.initializeConnection();
      example.doSomething(args);
    catch (Exception e)
      e.printStackTrace();
}