Sqljdbc Exception While Execute Batch Statement (Seems BUG)

The following exception is thrown with sqljdbc.jar (not with jtds0.9.jar)

com.microsoft.sqlserver.jdbc.SQLServerException: New request is not allowed to start because it should come with valid transaction descriptor.
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(Unknown Source)
at com.microsoft.sqlserver.jdbc.TDSTokenHandler.onEOF(Unknown Source)
at com.microsoft.sqlserver.jdbc.TDSParser.parse(Unknown Source)
at com.microsoft.sqlserver.jdbc.TDSParser.parse(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection$1ConnectionCommand.doExecute(Unknown Source)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectionCommand(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.rollback(Unknown Source)
at org.apache.commons.dbcp.DelegatingConnection.rollback(DelegatingConnection.java:265)
at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.rollback(PoolingDataSource.java:288)


While using the query :


if not exists ( select 1 from sysindexes where id = object_id('aaa') and name = 'aaa_pk')create unique nonclustered index aaa_pkon aaa(id)using Statement.executeBatch()at conection.commit()

Sample Code

conn = getConnection();

// create the statement and execute the query
Statement stmt = null;
try
{
conn.setAutoCommit(false);
stmt = conn.createStatement();
for ( String sql : sqlList )
{
stmt.addBatch( sql );
}

results = stmt.executeBatch();
stmt.clearBatch();
conn.commit(); //throws the exception
}
catch ( SQLException e )
{
try
{
conn.rollback();
}
catch ( SQLException e1 )
{
throw new DataSourceException( e1 );
}
throw new DataSourceException( "Error executing sql: %1", e, sqlList.toString() );
}