Question

MS Access on IIS issue

Asked by: ivanmata

Hi experts.

I have an issue with a couple of my web sites, which use MS ACCESS databases. I will migrate them to SQL Server (just as I did with other ones before, but at this moment I have no time to do it).

So, my problem is that this sites kind of "hang" my IIS after certain number of visits affecting all of my published sites, and I have to restart IIS once this happens. Major problem comes here: I don't know exactly when my IIS is gonna crash (because of Access DB).

I've been told to make a Scheduled Task that restarts IIS automatically once in a while, but this isn't really what I want, since my clients comes to my web sites randomly and they wouldn't like to see a "Service Unavailable" sign on the site they use (besides this affects to other sites that have no problems).

These are my specs:

IIS v6.0 running under Windows Server 2003 Enterprise Edition
Microsoft Jet OLE DB 4.0 driver

Thanks in advance =)

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Asked On
2006-07-14 at 10:36:18ID21919800
Tags

iis

Topic

Microsoft IIS Web Server

Participating Experts
2
Points
500
Comments
8

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Answers

 

by: Dave_DietzPosted on 2006-07-14 at 12:17:54ID: 17111099

Since you're running IIS 6.0 you can simply set the application pools to recycle after X number of requests.

When the pool recycles a new one is brought up and starts handling requests while the first one drains.  Once the first app pool has finished the requests it had when the recycle started it shuts down and the new app pool continues running normally.  This will prevent your clients from getting a servicve unavailable message.

If you are using in process session state for ASP or ASP.Net any current sessions will be lost so keep this in mind.

Dave Dietz

 

by: ivanmataPosted on 2006-07-14 at 15:22:37ID: 17112201

Ok, now I'm testing what you recommended Dave_Dietz. It will take me a couple of days in order to determine if the strange (and of course annoying) IIS behavior has gone with that.

Any other options are accepted.

Cheers

 

by: SimonBlakePosted on 2006-07-17 at 03:22:05ID: 17120758

You also might want to investigate the root cause of this problem as this isn't normal behavior... How exactly does the site stop working. The most likely cause is that objects are not closed correctly in the asp code.

S.

 

by: ivanmataPosted on 2006-07-17 at 07:01:09ID: 17122076

SimonBlake THIS IS in fact a "normal" behavior when you work with IIS 6.0 and MS Access DB's. I've found some info about this behavior (even in microsoft's web site), I just need to know if there's someone who has kind of fixed it and how.

BTW IIS stops displaying any info (including the SQL Server based sites)

Thanks anyway =)

 

by: SimonBlakePosted on 2006-07-17 at 08:14:09ID: 17122629

Hi Ivan,
I would be interested in seeing those links as I have looked after/designed and built sites with access db's for many years without this kind of problem, some of them are reasonably loaded as well (100+ hots an hour)... To be honest I see more problems with Oracle databases and connections not freeing up than access crashing IIS...

Having said that I would never advocate using Access in a high volume web sites, but every now and again it does have it's place for small sites where cost is an issue.

On your problem tho, is it an IE timeout or a 500 returned? Or just the spinning IE logo?
IE spinning logo - the server is still sending stuff - just very slowely.
500 - Then that is something we might be able to look at.

If you are running IIS6, I'm assuming your MDAC is relatively up to date, but are you doing anything odd such as putting the files on a NAS?

S.

 

by: ivanmataPosted on 2006-07-17 at 08:27:32ID: 17122742

See, when I worked with IIS 5.0, I had no problem like this. Problem came with IIS 6.0

There's no IE spinning logo, there's no 500. JUST NO INFO DISPLAYED AFTER CERTAIN NUMBER OF REQUESTS.

I have been trying Dave_Dietz's solution for about 24 hours. So far no trouble found.

20120131-EE-VQP-002

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