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deathwearer

External


Since: Dec 04, 2008
Posts: 3



(Msg. 1) Posted: Thu Dec 04, 2008 8:28 am
Post subject: Paradox and Vista problems
Archived from groups: comp>databases>paradox (more info?)
Hi,

I'm developping a side application for a client that use Paradox 5.x
tables
as a DataBase.

My application is in .NET 2.0, using OleDb to connect to the database.

On a Windows XP OS, I can run my application at the same time as I run
their.

But on Windows Vista Business 32-bit (Probably other Vista, but that's
the
only one I tried yet) I cannot run my application while their
application
is running.

I get the error "The microsoft Jet database engin could not find the
object
'mytable'. Make sure the object exists and that you spell its name and
the
path name correctly."

Ok, I'm sure the file exist and its spelled correctly. It only happen
when
I run their application. Like a cocurrent read/write on the database.

My side application only need to READ, so I tried setting the OleDb
driver
mode to read but it didn't fix the problem.

If anyone can help me, please do so as I tried everything and don't
know
what to do now.

If you need more informations, please tell me and I'll give it.


Thank you

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Tony McGuire

External


Since: Dec 04, 2008
Posts: 5



(Msg. 2) Posted: Thu Dec 04, 2008 10:39 am
Post subject: Re: Paradox and Vista problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Both systems need to configure to use a
** shared netdir ** in the ---> BDE.

Unless you use the same netdir, the BDE will prevent the second one into
the table (directory) from accessing it.

NOTE: The paths used to the netdir must be EXACTLY THE SAME in both
instances of the BDE.

NOT resolved to, but EXACTLY THE SAME, CHARACTER FOR CHARACTER. You CAN
get away with a different drive letter, but that is the only difference
allowed.


Tony McGuire



wrote:
> Hi,
>
> I'm developping a side application for a client that use Paradox 5.x
> tables
> as a DataBase.
>
> My application is in .NET 2.0, using OleDb to connect to the database.
>
> On a Windows XP OS, I can run my application at the same time as I run
> their.
>
> But on Windows Vista Business 32-bit (Probably other Vista, but that's
> the
> only one I tried yet) I cannot run my application while their
> application
> is running.
>
> I get the error "The microsoft Jet database engin could not find the
> object
> 'mytable'. Make sure the object exists and that you spell its name and
> the
> path name correctly."
>
> Ok, I'm sure the file exist and its spelled correctly. It only happen
> when
> I run their application. Like a cocurrent read/write on the database.
>
> My side application only need to READ, so I tried setting the OleDb
> driver
> mode to read but it didn't fix the problem.
>
> If anyone can help me, please do so as I tried everything and don't
> know
> what to do now.
>
> If you need more informations, please tell me and I'll give it.
>
>
> Thank you

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deathwearer

External


Since: Dec 04, 2008
Posts: 3



(Msg. 3) Posted: Thu Dec 04, 2008 11:44 am
Post subject: Re: Paradox and Vista problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Thank Tony,

I'll take a look at it.

But the customer application is in Delphi and using the BDE to connect
to the DataBase.

On the other hand my application is written in C# 2.0 and using OleDb
JET.4 to connect to the database. Sure the BDE still need to be
installed, but is it using the same netdir as the delphi application?
Or is there something I need to set somewhere? Cause you say make sure
they both use the same netdir, but I can only configure the netdir in
the BDE Administration and not at two place. So I'm a bit lost.


Thank for your help.
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Tony McGuire

External


Since: Dec 04, 2008
Posts: 5



(Msg. 4) Posted: Thu Dec 04, 2008 2:28 pm
Post subject: Re: Paradox and Vista problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
wrote:
> they both use the same netdir, but I can only configure the netdir in
> the BDE Administration and not at two place. So I'm a bit lost.

The setting needs to be set in YOUR bde and in your CLIENT's bde.

Both places that are going to try to use those tables jointly must have
the same location set in the bde for netdir.

Two bde, two bde set with same path to netdir.

And no, the setting in the BDE Administrator for those two systems are
NOT the EXACT SAME paths, character for character.

Look at it this way; if one has a netdir path of 13 characters, the
other must have a netdir path of 13 characters. And they must match -
every character must match on both systems.

Easiest to make it work is to use the unc to the directory as the netdir
for both systems.


--
---------------
Tony McGuire
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deathwearer

External


Since: Dec 04, 2008
Posts: 3



(Msg. 5) Posted: Fri Dec 05, 2008 6:52 am
Post subject: Re: Paradox and Vista problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Hi Tony,

For now the application run on the same computer. So this is why I
say, the BDE net dir is currently the same.

Unless you tell me I can configure the JET driver net dir, I have no
way to change anything.

The application use the BDE to connect, so the BDE admin net dir I
guess?

And my application is using OleDb JET driver to connect to the DB, but
I don't know if it use the BDE net dir or if I can change it anywhere.

The problem only happen when both application run at the same time.
When one is closed the other run fine.
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