Re: Re: Re: Re: SQL Server Query Failed

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OK, let me know if you needed any assistance. BTW, are you using
mssql_init() to call stored procedures?

-- bob

On Sat, 20 Mar 2004, david wrote:

> Bob:
>
> I shall experiment with option #3 (replacing php_mssql.dll with
> php_odbtp_mssql.dll). This will take a couple of days (I want to test it all
> out...sigh...testing...) and then slip it into production. I will report
> back on the results.
>
> On the Single Sign On... I am happy to talk about (and would LIKE to) but I
> don't know that this is the proper newsgroup for it? I am open for
> suggestions? I brought the SSO question up in comp.lang.php awhile ago, and
> although there was some discussion, mostly it petered out rather quickly.
>
> PHP for me was a requirement (part of the intranet is some PHP modules which
> are used on LAMP platforms); that is why we went PHP/Apache. (.NET was never
> in the picture, although in hindsight, I wish we had put up IIS/PHP.)
> However, it is a stable platform, and with just two exceptions (one being
> the above!) and the SSO issue that has recently surfaced, the platform has
> not experienced a single glitch. Personally, I do not favor the SSO
> solution, but I understand the business drive for it. Security and
> convenience are often strange bedfellows, and don't always get along.
> You are correct in the IIS supports SSO.
> david
>
>
> "Robert Twitty" <rtwitty@xxxxxxxxxxxxxxxxx> wrote in message
> news:Pine.GSO.4.44.0403191304110.8686-100000@xxxxxxxxxx
> > Hi David
> >
> > Based on the amount of users accessing the site, there is a possibitity
> > that php_mssql.dll not being thread safe could be the problem.  The only
> > way to verify this is to use PHP as a CGI, run Apache as a multi-process
> > server, or replace php_mssql.dll with php_odbtp_mssql.dll.
> >
> > As much as I like PHP and dislike Microsoft, I personally would not have
> > used Apache/PHP on a Win32 platform to connect to SQL Server.  The proper
> > choice should be IIS/ASP.NET.  I believe that IIS supports the single
> > sign-on feature for intranet purposes.  You may have to decide which of
> > the solutions I have mentioned is the most feasible.
> >
> > -- bob
> >
> > On Fri, 19 Mar 2004, david wrote:
> >
> > > Thank you, Bob, for your continuing comments.
> > >
> > > The intranet site is used by approximately 100 people, and sees a good
> > > amount of traffic every day. I don't really have an exact number of
> daily
> > > queries that are executed, but it has to be a pretty sizable number,
> since
> > > the site handles much of the business issues.
> > >
> > > The query in question fails randomly (as far as I can tell: I have been
> > > watching for patterns for some time now.) If it always failed, that
> would
> > > really help. Sigh. Random. Naturally. Worse, the query is 100% dynamic,
> and
> > > built by the users (but of course they do not know they are building a
> > > query. They are just selecting things to report on, which is the way it
> > > should be, in my opinion). So, I don't have a query I can show as always
> > > fails, or sometimes fails.
> > >
> > > The only common thread in all of this is the tables in question. There
> are
> > > only a couple of tables, and they are used in the datawarehouse for
> > > reporting. Oddly, though (and I cannot prove this as much as I would
> like
> > > to) I think that some of the failures happen when no one else is using
> that
> > > table. All the other intranet tables perform as expected (and there are
> a
> > > LOT of those).
> > >
> > > I will look at the Apache 2/multi-process question. It is a great
> thought.
> > >
> > > I have another problem (this one is more of a how in the world do I do
> that,
> > > and relates to digging out the user signed onto the workstation for a
> single
> > > sign on solution: we won't go into the "is that a good idea" question,
> > > because it is moot, and I came out on the losing end); apparently I
> can't do
> > > this with Apache 2 and Windows, and so, long story short, perhaps I
> should
> > > consider other web server options.
> > >
> > > Thanks, Bob!
> > > david
> > >
> > > "Robert Twitty" <rtwitty@xxxxxxxxxxxxxxxxx> wrote in message
> > > news:Pine.GSO.4.44.0403191029450.4935-100000@xxxxxxxxxx
> > > > Hi David
> > > >
> > > > Do these few queries ALWAYS fail, or just occasinally fail? Is this
> > > > intranet site used by many people?  If the same query always fails,
> you
> > > > can determine if it may be a thread-safe issue by running that query
> > > > outside of Apache as follows:
> > > >
> > > > c:\php\php thequery.php
> > > >
> > > > If the above fails, then it is probably not due to the fact that the
> mssql
> > > > extension is not thread safe.  If it does work then it could be the
> > > > problem.  I am not familiar with Apache 2.0, but I do believe it is a
> > > > multi-threaded server, which is not good for extensions that are not
> > > > thread-safe. If Apache 2.0 cannot be configured to run as a
> multi-process
> > > > server, you should consider using Apache 1.3.
> > > >
> > > > -- bob
> > > >
> > > > On Fri, 19 Mar 2004, david wrote:
> > > >
> > > > > Ah....thread safe.
> > > > >
> > > > > THAT is an interesting thought. Especially because I somehow suspect
> > > that my
> > > > > problem is related to the database and/or table being locked just
> when I
> > > am
> > > > > trying to read it.
> > > > >
> > > > > However, I have to profess some ignorance about FastCGI. I looked at
> the
> > > web
> > > > > site for it, but I am not sure if by installing it I am now
> magically
> > > > > thread-safe? Or, once installed, do I need to make some code
> changes?
> > > > >
> > > > > My environment is an established intranet (Windows based; Windows
> 2000
> > > > > server, Apache 2.0; connecting over the network to MS SQL Server,
> also
> > > > > running on Windows 2000). What is odd is that there are only a
> couple of
> > > > > queries that fail, and when they do, they ONLY fail against certain
> > > tables
> > > > > used for reporting from a data warehouse, and then only now and then
> > > > > (perhaps once a day; maybe less). The queries are dynamic in nature,
> and
> > > can
> > > > > pull data of integer, char, or varchar. All other queries (and there
> are
> > > a
> > > > > rather lot of them) for doing the mundane intranet stuff work
> perfectly,
> > > and
> > > > > have NEVER failed. It is a real puzzle.
> > > > >
> > > > > Thanks!
> > > > > david
> > > > >
> > > > > "Frank M. Kromann" <frank@xxxxxxxxxxxx> wrote in message
> > > > > news:10796513604800000@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > > > > > Hi David,
> > > > > >
> > > > > > You problem might be a thread safty issue. the MSSQL extension is
> not
> > > > > > thread safe (caused by the Microsoft Library used to create the
> > > > > > extension). Use CGI or FastCGI to avoid this problem.
> > > > > >
> > > > > > - Frank
> > > > > >
> > > > > > P.S. I don't have the full thread of this discussion so I might
> miss
> > > some
> > > > > > important information about your setup.
> > > > > >
> > > > > > > Bruno:
> > > > > > >
> > > > > > > I did that. I had to wait a bit until it failed again, whcih it
> did
> > > a
> > > > > > few
> > > > > > > moments ago. Alas, there is not one thing out of the ordinary in
> the
> > > > > > log.
> > > > > > >
> > > > > > > Any other suggestions?
> > > > > > >
> > > > > > > THANK YOU!
> > > > > > > david
> > > > > > >
> > > > > > > "Bruno Ferreira" <blueroom@xxxxxxxxxxxxxxxx> wrote in message
> > > > > > > news:405882ED.80803@xxxxxxxxxxxxxxxxxxx
> > > > > > > > david wrote:
> > > > > > > >
> > > > > > > > >Hello there!
> > > > > > > > >
> > > > > > > > >I have just about driven myself crazy with an odd
> intermittent
> > > > > > problem.
> > > > > > > > >[snip]
> > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > > >     I'd first start by turning on all logging I could in the
> SQL
> > > > > > server
> > > > > > > > so that I could see what's happening straight from the horse's
> > > > > > mouth...
> > > > > > > >
> > > > > > > >     Bruno Ferreira
> > > > > > > > ---
> > > > > > > > [This E-mail scanned for viruses by Declude Virus]
> > > > > > > >
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