limitation on reports file size to download

[padmashree.kn]

let m eknow is there any limitation on jasper reports file size like 10mb, 15mb, 20mb to download

if it is what is the min size and max size, user can download the report data and is it configurable to download in csv,xls,pdf etc.,

Jasper 6.1, tomcat 7, java 1.7

Please let me know

[padmashree.kn]

Can anybody tell me limitations of Jasper Reports for e.g: how many records are allowed to display, time required to generate report with large amount of records etc. etc.

[hozawa]

There really isn't a logical limitation to file size. However, there is a physical limitation because exporting requires memory. If your report is very large and if you have few concurrent users displaying reports, physical memory is quickly exhausted. JasperReports supports virtualizer but if you active virtualizer on a server, it makes the situation worse because CPU goes up to 100% to swap memory - the server won't go down but it remains unresponsive for a very very long period of time.

This is a caused not by limitation of JasperReports but with JasperReports Server. If you build your own server application, you can make it to handle very large reports with many users.

[padmashree.kn]

Thank you for the reply. I can see while downloading the 19mb data report  the cpu goes beyond 150% but cpu will come when 

the server loads all pages.

Is the configuring pagination helps here?

[Balraj]

I'm also looking for this. I would lke to Limit the JasperReports Export size to 15MB. Is it possible? Need some guidance regarding this.

Thanks :)