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Access:One database vs multiple databases

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sfd19 View Drop Down
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    Posted: 01 February 2005 at 8:53am

We are using Web Wiz Forums, Guestbook, Poll and some more applications that are using their own databases, like a picture gallery (all of them Access). The main and most frequented database is of course the WWF.

Does it make sense to add the smaller and much lesser frequented 5 databases (size from 100Kb to 2Mb) as new tables into the WWF main database (60+ Mb)? Would performance increase? What issues must I take into consideration before migrating the 6 databases into 1, any pros or contras?
 
Right now each page uses 3-5 different DSN-connections (I know that DSN-less is usually faster, but with our host it does not work very well) so using only one connection to the same database should be faster, at least I would assume so. Is that correct?
 
We are getting hosted on a shared Windows 2003 Server.
 
All further informations would be greatly appreciated.
 


Edited by sfd19 - 01 February 2005 at 8:55am
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dpyers View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dpyers Quote  Post ReplyReply Direct Link To This Post Posted: 04 February 2005 at 7:51pm
DSNless connections are faster than ODBC. Each ODBC connecttion also requires set-up and break-down.
 
On the other hand, the entire access db is loaded into memory each time it's opened - regardless of connection method. It would seem like a waste to load the infrequently used data for pages where it will never be referenced.

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sfd19 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sfd19 Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2005 at 4:03am
Thanks a lot.
 
We have been using DSN-less connections before and I am well aware that they are faster. But since we changed the host the DSN-less connections became extremely slow so we had to switch to DSN-connections.
 
Although our site is not really fast, it is using a 60MB Access database, so I will not complain. Before we had a 120MB database, without any significant performance changes. (SQL is not an option).
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Post Options Post Options   Thanks (0) Thanks(0)   Quote arthurk Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2005 at 6:05am
my forum on www.bigbikeworld.com has a database size near 150 mb and i dont have much of a problem with speed using the jet 4 drivers
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Mart View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mart Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2005 at 6:48am
I bet your server must be pretty fast then and have a lot of memory, for every DB call on your site a 150mb file is loaded into your servers memory then removed...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote arthurk Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2005 at 6:01am
its just a shared server on a reseller account i have at fasthosts think its running a few websites as well as mine
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