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Forums >> General Discussion >> Revit Project Management >> Compact file during Save As
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Joined: Thu, Nov 13, 2008
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The help menu is sort of vage here: Compact File. Reduces file sizes when saving workset-enabled files. During a normal save, Revit Architecture only writes new and changed elements to the existing files. This can cause files to become large, but it increases the speed of the save operation. The compacting process rewrites the entire file and removes obsolete parts to save space. Because it takes more time than a normal save, use the compact option when the workflow can be interrupted It states: "The compacting process rewrites the entire file and removes obsolete parts to save space. What is an obsolete part? Is it doing a purge? Thanks
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Quote by: Holtz, Lou
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Joined: Tue, May 16, 2006
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It is not doing a purge. The obsolete parts are changes that you have made such as element deletions and old element locations.
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cool, no purge... I was kinda scared of that idea. just making sure before I skrew myself. Is it cleaning up the data base? From my little knowledge of Access from 10 years ago. Data that is 'deleted' from a data base is realy not deleted only left blank and still holds memory space. (from what I remember) And this compact is "re-writing" the data base to not include the "old information" that was deleted from model file but still remained in current data base befor a compact is performed?
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Quote by: Holtz, Lou
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Compact file generally has little effect. Purging, selectively, can have a pretty dramatic result. "purge all unused" feels pretty good, but will come back to bit you in the curse when you realize you're removed things you intended to use... so, I don't reccomend it since you'll find yourself reloading a bunch of stuff. But there's no risk of purging anything that's in use... like all of your windows or something. So no catastrophic damage can come from this sort of file management.
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Compacting does have an effect that is dramatic on large files. We regularly reduce some of our files by 25 meg. Obviously it is all proportional to your project size. If your projects are under 100 meg, you may not see a really big change but the one I am on is at 200 meg and I need to look at auditing/compacting again.
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Thanks guys I understand purging very well, Ihave no question about purging. My scare was that I thought that compacting would be a purge doing exactly what itsmyalterego said, purging out the unused elements that I need to keep in my file for future use. Back to my question compacting is a full re-writing of the data base to not include old deleted information that still is holding onto (space, memory, or what ever it is holding onto to make my file larger) Thanks
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Quote by: Holtz, Lou
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