Problem with export to excel more 1000 rows

Hi all, I have a problem with jasperrerports and JSF 2, the report that I have when I send less than 200 export records works fine, but when I send the datasource with more than 1000 records, wanting to open the excel, I says data may have been lost, the log does not show me any errors, only when opening the excel can not.

 

I need your help friends. : D