Our applications stores large CAD files in an SQL 2005 database field VARBIN(max). A few of these documents are in excess of 100MB in size. Our application throws an "OutOfMemory" exception when attemption to download or upload these large CAD files.
This is government data, so we put the drawings into a database field for security purposes.
The webserver is running 32bit Win2003 and IIS6, it has 2GB RAM.The sqlserver is running 32bit Win2003 and MS SQL 2005, it has 2GB RAM.
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We've implemented a limit to the document size being stored in DB. We've implemented recycling worker processes based on memory usage, and increased the server gargen to allow 5 worker processes.
We've implemented SQLServer Session States so our users won't be required to log back into the website when the worker processes are recycled.
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by: macksmPosted on 2009-07-05 at 06:02:54ID: 24779902
I am Not aware of any database system That hold such Big CAD drawings Of Size 100MB. DEfinetly it would crash and give exceptions. Also it's avery bad idea to store Important documents in a database. The purpose of dattabase is to make retrieving and managing data for programmers easy. It has Nothing to do with pro tecting important documents. Except for setting a password. And most likely thiing is You will loose Big drawings considering longterm goals in mind. And also thsi will make your server slower.
So Irecommend only keeping images or drawings as small as 300-500kb only in databases. Insted you can keep drawings as files in the server and store path of files in your database fields.
If your drawings are very mportant and are for your eyes only . You can try asking aprogrammer to write a file encryption code for you. So that only when you decrypt your drawings are visible.
If you are intrested i can write one encrypter for you