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Report Output Versions - Space Concern

Posted on 2008-10-09
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Last Modified: 2010-04-29
Hello,

Can someone tell me how Report Output Versions are stored in Cognos 8.3?  Does it store these files somewhere on the app server or in the content store?  It doesn't seem to access the database everytime one is opened.

The reason I'm asking is that many of the reports ran are very large and we're worried about space.  

My second question, is there a way to run a job that purges report outputs?  For example, looks for any report output older than 90 days and deletes it.

Thanks!
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Question by:dakinegeek
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RWrigley earned 500 total points
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When you run a report and "save" it, the cognos report engine retrieves the data required for the report, and sends it to the Content Manager to be stored within the content store.  When you go to "view" this saved output, the data is then retrieved from the content store and sent to the presentation service, which generates the formatted output that is then sent to the user.  ALong hte way, it'll get stored in temporary files in the "Temp" directory.

Files in the temp directory are (normally) deleted once they are no longer needed (which can be as long as 15 minutes after the last time the report is accessed).

For you second question, you can control the number of "Versions" that Cognos 8 will store as a property of the report.  you can choose to restrict either the number of versions or the age of versions as required.  

FInally, there is a task you can create in the "Content Adminstration" screen called "Consistency Check".  This job will go through the content store and remove report outputs that are no longer needed (either because the user who created no longer exists, or becuase it is older then the settings specified above).
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