Discoverer Plus loses connection when COLLAPSING in Hierarchy!

I am getting an error saying that' Discoverer connection is lost. Please contact your admin" when I am collapsing hierarchies. Did you ever encounter this kind of error ever? I have like 6 levels of hierarchies(date hierarchy, like yr,season, quarter etc)...So one hierarchy is Company ->Year and other one is Year->Season->Quarter so on.... So when I collapse one by one level its ok... but when i do it all at once from the top, i.e Company, it loses connection!!
Is it some kind of a bug???
Thanks a lot,
rocky

Hi
Well it does sound like the hierarchies are to blame, although to be honest with you I've seen Discoverer losing its connection for something far less trivial than that. The most common reasons for losing a connection are network issues and being out of memory either on the Discoverer client or on the server. I'd suspect that memory is an issue.
Now, your second issue relates to the use of those hierarchies. Are they perhaps date hierarchies as opposed to item hierarchies? If so, whilst they are really quite clever, they do tend to cause more problems than they solve. Personally, if you are using date hierarchies, I would create a materialized view or table of your fiscal time and then create one folder for each date in your folder. I'd drop the Oracle date hierarchies in a heart beat but this is easier said than done.
Does this help?
Regards
Michael

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