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  • 1.  Active Reports

    Posted 07/07/22 08:39 AM

    Hi, everyone. Are there any limitations about the size on active report?  We have an active report on dev environment than takes 2 and half minutes, there are many rows in that environment. On production environment we have a little more record, and the same report takes almost an hour to run. 

    Thanks!



    ------------------------------
    Diego Jose Urbaneja Pacheco
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    #CognosAnalyticswithWatson


  • 2.  RE: Active Reports

    Posted 07/07/22 10:24 AM

    Hi,

    I would recommend you try to stick to an overall size of 10Mb or less for a rendered active report output. Often your output will contain summarized data, so although your Dev and Production environments might be generating outputs of similar size (for example 1,000 rows in the output), it's entirely possible your Dev environment might be summarizing thousands of underlying rows to produce the 1000, whereas the Production environment might be summarizing hundreds of millions of rows to produce the 1000. Is this the case?

    Cheers!

    MF.



    ------------------------------
    Mark Fry
    Technical Consultant
    ------------------------------



  • 3.  RE: Active Reports

    Posted 07/07/22 11:11 AM
    Thank you Mark.

    In this case we have a mix. We have summarized data on some decks and details on other decks, because the customer need to look at details that are related to.  We have advised the client that in an executive report type the detail should be shown in a separate report, but they say it's more convenient to have it in the same report.



    ------------------------------
    Diego Jose Urbaneja Pacheco
    ------------------------------



  • 4.  RE: Active Reports

    Posted 07/07/22 11:58 AM
    Hi,

    You didn't mention how big the rendered output is? What sort of size are we looking at?

    Cheers!

    MF.

    ------------------------------
    Mark Fry
    Technical Consultant
    ------------------------------



  • 5.  RE: Active Reports

    Posted 07/07/22 12:24 PM
    Dev. environment the file has 9,939 KB (it takes 2 and half minute approx.). At this moment we are generating the report in the production environment to look at it's size...

    ------------------------------
    Diego Jose Urbaneja Pacheco
    ------------------------------



  • 6.  RE: Active Reports

    Posted 07/07/22 02:57 PM
    In production environment the file has 9,957 KB.

    ------------------------------
    Diego Jose Urbaneja Pacheco
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  • 7.  RE: Active Reports

    Posted 07/08/22 11:39 AM

    Ok, those are both below 10Mb, so should be fine in use. The fact one is taking two minutes to render and the other is taking an hour is likely due to the volume of rows having to be aggregated in Dev vs Production. One thing you could try is grabbing the SQL the report is generating and running this directly against the underlying databases to see how long the query takes to execute in Dev vs Production?

    Cheers!

    MF.



    ------------------------------
    Mark Fry
    Technical Consultant
    ------------------------------



  • 8.  RE: Active Reports

    Posted 07/08/22 02:15 PM
    We had to do a LOT of trial and error with our active reports to get them to run in a reasonable amount of time (ie: like under 2 hrs!) by having our ETL do a lot more work creating summary data.  We were really surprised how poorly they ran on what seemed to be fairly minimal data!

    I believe this is one of the things IBM has or wants to deprecate once again in favor of DataSets/DataModules so I think they're not putting any effort into optimization.

    Regards,

    Wayne

    ------------------------------
    Wayne Westlake
    ------------------------------