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Regarding Pagination to reduce the load on database server

Nalini

Hi,

I have a requirement where I need to load 5 Lakh records from the database,I developed a design and deployed that in the WebViewer,the report is running but consuming more than 6 mins.
Instead of fetching all the data at once and presenting in the pagination format,I want to fetch first 100 records and based on the pagenumber entered in the field i want to fetch those records inorder to reduce the burden on the database.How can I achieve this.I use database as my dataset.

Any help is appreciable...
Thanks in Advance........

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mwilliams

Hi Nalini,

Can you explain your issue a little more in detail? I'm not sure I'm understanding completely how you'd like to fetch the data.

Nalini

Hi, 
 
I deployed my design in JBOSS 
 
<a class='bbc_url' href='http://localhost:7070/WebViewer/frameset?__report=CustomerDetails.rptdesign'>http://localhost:7070/WebViewer/frameset?__report=CustomerDetails.rptdesign</a> 
 
When I hit this URL,my design opens in BirtViewer with pagination,export tools etc. 
But what happens is it first fetches the whole data and presents in the pagination format,where I can navigate to the respective page Using WebViewer that causes lot of overload on my database server. 
 
 
Instead of fetching 5 lakh records at a time I want to fetch the data based on the page number I entered in the enter page field in WebViewer Application .I digged through the WebViewer code and tried few ways but doesnt work. 
 
Thanks

EDH

Did you find a solution for this ?

I'm having exactly the same problem.

I need to produce some rather big reports. 25.000 rows.

I don't want to retrieve all these rows at once from my database.
Not because my db can't handle it, but because I want to avoid running into an OutOfMemoryError on my application server.

Did you find out how you can build a report in chunks ? That is, fetch the data, chunk by chunk, and building the report, chunk by chunk ?

Regards,
EDH