Re: OutOfMemoryException Filling DataTable

From:
Jesse Houwing <jesse.houwing@newsgroup.nospam>
Newsgroups:
microsoft.public.dotnet.framework
Date:
Tue, 20 Oct 2009 16:54:15 +0200
Message-ID:
<uJVF1UZUKHA.3720@TK2MSFTNGP02.phx.gbl>
* SnapDive wrote, On 20-10-2009 16:35:

I am doing a simple select on a MSSQL 2005 database and asking for
10,000 rows using classic ADO.NET. I am getting an out of memory
exception. I need this big table, is there any way to back the
DataTable with a disk-resident stream or something else that will let
me "go big"? I don't care if it is slow or not.

Thanks.

DataTable tb = new DataTable();
try
{
using ( sqlco sqlco = new sqlco( myconnstring ) )
{
sqlco.Open();
using ( da da = new da( "select top 10000 id,key,value from mytable" ,
sqlco ) )
{
    da.Fill( tb );
}
}
}


What do you need these 10.000 rows for? Can you
- Page the result set and load them per 10 or 100 or even 1000?
- Use a DataReader and only have one row in memory at the time?
- Upgrade to SQL 2008 and use the new FILESTREAM feature
(http://msdn.microsoft.com/en-us/library/cc716724.aspx)?

As long as we have no clue on whet you're trying to do with these
enormous amounts of data, we can't give you a proper answer.

--
Jesse Houwing
jesse.houwing at sogeti.nl

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