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Thread: Not able to even preview (metadata datasource)

  1. #1

    Default Not able to even preview (metadata datasource)

    Hi all,

    I've created a metadata xmi file with the metadata editor and I've loaded it with the report designer. Everything is correct in the metadata schema but when I try to make a report, even if I just put to preview the field year with a condition where year=2008 and with group by year, the report designer freezes while paginating at 0%, the process of MySQL (mysqld.exe) goes crazy and starts using 99% CPU and it just freezes in that moment. After that if I cancel the paginating, mysqld.exe keeps making the query on the database and I have to restart the services if I have intention of keep working.

    Does anybody have idea of how to solve this??

    Thanks in advance,


  2. #2
    Join Date
    Mar 2003


    Check the SQL that your query creates. I would say it tries to get a large amount of data, and your database or your metadata schema is probably badly organized for the query you are asking. Check that you have proper indexes on your foreign-key relationships etc.

    The report designer can only process a report when it has data for it, so if your database does not answer, we wait. And wait. And wait ..
    Get the latest news and tips and tricks for Pentaho Reporting at the Pentaho Reporting Blog.

  3. #3


    Thanks man, the problem I had was that some primary keys where missing :S Now its all working perfect ^^

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