Back end database lock-up

Excuse my noobness.  I am managing an access database that is shared
by 4 users.  Management does not want to use any technologies outside
of access for this application (no SQL Server, etc).  I have split the
database into front end and back end databases and put the front end
on each of the users' computers.  All users can open the front end
simultaneously, but once somebody updates data in the form, the back
end locks up.

What I expect to happen:
- I assume that access should use optimistic locking (?) that would
only lock the records that are being updated, but it locks the entire
database.

what I've tried:
- i checked and double checked that the query and form are set to no-
locks
- I tried taking out all calculated values (string manipulations) in
the query
- I'm not the only one working on this, so there have been quite a few
other things looked at to no avail.

I'm stumped.  Thanks for any help.
0
zmickle (7)
11/13/2008 4:05:33 AM
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Suggestions:

1. Is this on a wired (CAT5) network?
No unstable connections (such as notebooks using WiFi)?

2. You say that users each have a different front end MDB on their own 
computers, but then you say they open the front end (singular) 
simultaneously. Is each one opening a separate front end MDB file that's on 
their own C: drive? (That's best.)

3. Check the open mode and locking strategy of *each* front end.
In A2007, that's Office Button | Access Options | Advanced.
In earlier versions it's Tools | Options | Advanced.
You should see:
- Default Open mode:          Shared
- Default Record Locking:    No Locks

4. Close all front ends. Make sure the LDB file in the back-end folder is 
gone. Then try again. (In practice, it's the first user in who sets the 
actual locking mode.)

-- 
Allen Browne - Microsoft MVP.  Perth, Western Australia
Tips for Access users - http://allenbrowne.com/tips.html
Reply to group, rather than allenbrowne at mvps dot org.

"zmickle@gmail.com" <samlambson@gmail.com> wrote in message
news:d7557be2-e3ee-4707-9795-5abf2307da18@q30g2000prq.googlegroups.com...
> Excuse my noobness.  I am managing an access database that is shared
> by 4 users.  Management does not want to use any technologies outside
> of access for this application (no SQL Server, etc).  I have split the
> database into front end and back end databases and put the front end
> on each of the users' computers.  All users can open the front end
> simultaneously, but once somebody updates data in the form, the back
> end locks up.
>
> What I expect to happen:
> - I assume that access should use optimistic locking (?) that would
> only lock the records that are being updated, but it locks the entire
> database.
>
> what I've tried:
> - i checked and double checked that the query and form are set to no-
> locks
> - I tried taking out all calculated values (string manipulations) in
> the query
> - I'm not the only one working on this, so there have been quite a few
> other things looked at to no avail.
>
> I'm stumped.  Thanks for any help. 

0
AllenBrowne (3681)
11/13/2008 10:42:48 AM
On Nov 13, 3:42=A0am, "Allen Browne" <AllenBro...@SeeSig.Invalid> wrote:
> Suggestions:
>
> 1. Is this on a wired (CAT5) network?
> No unstable connections (such as notebooks using WiFi)?
>
> 2. You say that users each have a different front end MDB on their own
> computers, but then you say they open the front end (singular)
> simultaneously. Is each one opening a separate front end MDB file that's =
on
> their own C: drive? (That's best.)
>
> 3. Check the open mode and locking strategy of *each* front end.
> In A2007, that's Office Button | Access Options | Advanced.
> In earlier versions it's Tools | Options | Advanced.
> You should see:
> - Default Open mode: =A0 =A0 =A0 =A0 =A0Shared
> - Default Record Locking: =A0 =A0No Locks
>
> 4. Close all front ends. Make sure the LDB file in the back-end folder is
> gone. Then try again. (In practice, it's the first user in who sets the
> actual locking mode.)
>
> --
> Allen Browne - Microsoft MVP. =A0Perth, Western Australia
> Tips for Access users -http://allenbrowne.com/tips.html
> Reply to group, rather than allenbrowne at mvps dot org.
>
> "zmic...@gmail.com" <samlamb...@gmail.com> wrote in message
>
> news:d7557be2-e3ee-4707-9795-5abf2307da18@q30g2000prq.googlegroups.com...
>
> > Excuse my noobness. =A0I am managing an access database that is shared
> > by 4 users. =A0Management does not want to use any technologies outside
> > of access for this application (no SQL Server, etc). =A0I have split th=
e
> > database into front end and back end databases and put the front end
> > on each of the users' computers. =A0All users can open the front end
> > simultaneously, but once somebody updates data in the form, the back
> > end locks up.
>
> > What I expect to happen:
> > - I assume that access should use optimistic locking (?) that would
> > only lock the records that are being updated, but it locks the entire
> > database.
>
> > what I've tried:
> > - i checked and double checked that the query and form are set to no-
> > locks
> > - I tried taking out all calculated values (string manipulations) in
> > the query
> > - I'm not the only one working on this, so there have been quite a few
> > other things looked at to no avail.
>
> > I'm stumped. =A0Thanks for any help.

Allen,

Thanks so much for your response

1. Yes every computer has a  wired.

2. Each user has their own ACCDB front end on their own C: drive.

3. Each front end is configured as you suggested in Access Options (I
will double check today)

4. The locking file is not created until a user updates the data via
the form.  Any computer that has that same form already open can make
changes as well.  After an update is made, any new instance of the
form is "not updatable." When the updating users close the form, the
locking file goes away.

Something about updating the query through the form locks the back end
database, then the back end is locked until the form is completely
closed.

I think the problem is occurring at the point that someone updates.

Thanks,

Sam
0
zmickle (7)
11/13/2008 8:15:50 PM
zmickle@gmail.com wrote:

> Excuse my noobness.  I am managing an access database that is shared
> by 4 users.  Management does not want to use any technologies outside
> of access for this application (no SQL Server, etc).  I have split the
> database into front end and back end databases and put the front end
> on each of the users' computers.  All users can open the front end
> simultaneously, but once somebody updates data in the form, the back
> end locks up.
> 
> What I expect to happen:
> - I assume that access should use optimistic locking (?) that would
> only lock the records that are being updated, but it locks the entire
> database.
> 
> what I've tried:
> - i checked and double checked that the query and form are set to no-
> locks
> - I tried taking out all calculated values (string manipulations) in
> the query
> - I'm not the only one working on this, so there have been quite a few
> other things looked at to no avail.
> 
> I'm stumped.  Thanks for any help.

What version of Access are you using?

Is the backend on a network server?

Keith Wilby mentioned rights.  I think in Novell for rights; read, 
write, erase (delete), modify, create.  You said you had read/write. 
Are there other rights you can grant?

Are you up to date on program service packs on all computers?
0
oil (4047)
11/13/2008 11:37:57 PM
Is this a bound form? Or are you programmaticlly executing some updates in 
an action query or some code?

A bound form should not behave as you describe, but code might lock a whole 
table.

-- 
Allen Browne - Microsoft MVP.  Perth, Western Australia
Tips for Access users - http://allenbrowne.com/tips.html
Reply to group, rather than allenbrowne at mvps dot org.

"zmickle@gmail.com" <samlambson@gmail.com> wrote in message
news:884e75d7-adb2-4bcb-a8c0-fc9109f75192@x16g2000prn.googlegroups.com...
On Nov 13, 3:42 am, "Allen Browne" <AllenBro...@SeeSig.Invalid> wrote:
> Suggestions:
>
> 1. Is this on a wired (CAT5) network?
> No unstable connections (such as notebooks using WiFi)?
>
> 2. You say that users each have a different front end MDB on their own
> computers, but then you say they open the front end (singular)
> simultaneously. Is each one opening a separate front end MDB file that's 
> on
> their own C: drive? (That's best.)
>
> 3. Check the open mode and locking strategy of *each* front end.
> In A2007, that's Office Button | Access Options | Advanced.
> In earlier versions it's Tools | Options | Advanced.
> You should see:
> - Default Open mode: Shared
> - Default Record Locking: No Locks
>
> 4. Close all front ends. Make sure the LDB file in the back-end folder is
> gone. Then try again. (In practice, it's the first user in who sets the
> actual locking mode.)
>
> --
> Allen Browne - Microsoft MVP. Perth, Western Australia
> Tips for Access users -http://allenbrowne.com/tips.html
> Reply to group, rather than allenbrowne at mvps dot org.
>
> "zmic...@gmail.com" <samlamb...@gmail.com> wrote in message
>
> news:d7557be2-e3ee-4707-9795-5abf2307da18@q30g2000prq.googlegroups.com...
>
> > Excuse my noobness. I am managing an access database that is shared
> > by 4 users. Management does not want to use any technologies outside
> > of access for this application (no SQL Server, etc). I have split the
> > database into front end and back end databases and put the front end
> > on each of the users' computers. All users can open the front end
> > simultaneously, but once somebody updates data in the form, the back
> > end locks up.
>
> > What I expect to happen:
> > - I assume that access should use optimistic locking (?) that would
> > only lock the records that are being updated, but it locks the entire
> > database.
>
> > what I've tried:
> > - i checked and double checked that the query and form are set to no-
> > locks
> > - I tried taking out all calculated values (string manipulations) in
> > the query
> > - I'm not the only one working on this, so there have been quite a few
> > other things looked at to no avail.
>
> > I'm stumped. Thanks for any help.

Allen,

Thanks so much for your response

1. Yes every computer has a  wired.

2. Each user has their own ACCDB front end on their own C: drive.

3. Each front end is configured as you suggested in Access Options (I
will double check today)

4. The locking file is not created until a user updates the data via
the form.  Any computer that has that same form already open can make
changes as well.  After an update is made, any new instance of the
form is "not updatable." When the updating users close the form, the
locking file goes away.

Something about updating the query through the form locks the back end
database, then the back end is locked until the form is completely
closed.

I think the problem is occurring at the point that someone updates.

Thanks,

Sam 

0
AllenBrowne (3681)
11/13/2008 11:48:38 PM
On Nov 13, 4:48 pm, "Allen Browne" <AllenBro...@SeeSig.Invalid> wrote:
> Is this a bound form? Or are you programmaticlly executing some updates in
> an action query or some code?
>
> A bound form should not behave as you describe, but code might lock a whole
> table.
>
> --
> Allen Browne - Microsoft MVP.  Perth, Western Australia
> Tips for Access users -http://allenbrowne.com/tips.html
> Reply to group, rather than allenbrowne at mvps dot org.
>
> "zmic...@gmail.com" <samlamb...@gmail.com> wrote in message
>
> news:884e75d7-adb2-4bcb-a8c0-fc9109f75192@x16g2000prn.googlegroups.com...
> On Nov 13, 3:42 am, "Allen Browne" <AllenBro...@SeeSig.Invalid> wrote:
>
>
>
> > Suggestions:
>
> > 1. Is this on a wired (CAT5) network?
> > No unstable connections (such as notebooks using WiFi)?
>
> > 2. You say that users each have a different front end MDB on their own
> > computers, but then you say they open the front end (singular)
> > simultaneously. Is each one opening a separate front end MDB file that's
> > on
> > their own C: drive? (That's best.)
>
> > 3. Check the open mode and locking strategy of *each* front end.
> > In A2007, that's Office Button | Access Options | Advanced.
> > In earlier versions it's Tools | Options | Advanced.
> > You should see:
> > - Default Open mode: Shared
> > - Default Record Locking: No Locks
>
> > 4. Close all front ends. Make sure the LDB file in the back-end folder is
> > gone. Then try again. (In practice, it's the first user in who sets the
> > actual locking mode.)
>
> > --
> > Allen Browne - Microsoft MVP. Perth, Western Australia
> > Tips for Access users -http://allenbrowne.com/tips.html
> > Reply to group, rather than allenbrowne at mvps dot org.
>
> > "zmic...@gmail.com" <samlamb...@gmail.com> wrote in message
>
> >news:d7557be2-e3ee-4707-9795-5abf2307da18@q30g2000prq.googlegroups.com...
>
> > > Excuse my noobness. I am managing an access database that is shared
> > > by 4 users. Management does not want to use any technologies outside
> > > of access for this application (no SQL Server, etc). I have split the
> > > database into front end and back end databases and put the front end
> > > on each of the users' computers. All users can open the front end
> > > simultaneously, but once somebody updates data in the form, the back
> > > end locks up.
>
> > > What I expect to happen:
> > > - I assume that access should use optimistic locking (?) that would
> > > only lock the records that are being updated, but it locks the entire
> > > database.
>
> > > what I've tried:
> > > - i checked and double checked that the query and form are set to no-
> > > locks
> > > - I tried taking out all calculated values (string manipulations) in
> > > the query
> > > - I'm not the only one working on this, so there have been quite a few
> > > other things looked at to no avail.
>
> > > I'm stumped. Thanks for any help.
>
> Allen,
>
> Thanks so much for your response
>
> 1. Yes every computer has a  wired.
>
> 2. Each user has their own ACCDB front end on their own C: drive.
>
> 3. Each front end is configured as you suggested in Access Options (I
> will double check today)
>
> 4. The locking file is not created until a user updates the data via
> the form.  Any computer that has that same form already open can make
> changes as well.  After an update is made, any new instance of the
> form is "not updatable." When the updating users close the form, the
> locking file goes away.
>
> Something about updating the query through the form locks the back end
> database, then the back end is locked until the form is completely
> closed.
>
> I think the problem is occurring at the point that someone updates.
>
> Thanks,
>
> Sam

Thanks for the responses.  I may request a SQL Server instance.  With
the right argument I may be able to convince my higher-ups to allow
it.  But here are the answers to the questions asked in your
responses:

@Salad:
What version of Access are you using? Access 2007 (enterprise I think)

Is the backend on a network server? Yes it is on a shared drive that
is mapped to each workstation.  The linked tables are referencing the
backend via drive name (i.e. Q:...) rather than the network name.

Keith Wilby mentioned rights.  I think in Novell for rights; read,
write, erase (delete), modify, create.  You said you had read/write.
Are there other rights you can grant?  They only have read/write, no
delete, modify, or create.  I do not have rights to change these, but
might be able to request it if I find out that it is a must-have.

Are you up to date on program service packs on all computers?
yes. I can check, but I believe so.

@Allen

By bound form do you mean the form is bound to a query, then yes.  In
the data source property, there is a query.  The query simply merges
two tables on a foreign key.  values from the query are available in
the form and when you put your cursor in the textbox, you can update
the data.  That is when the backend locks up.

They want this thing working by tomorrow, so if it's still not working
by end of day, I'll request a SQL Server DB.

Thanks for the help.

Sam
0
zmickle (7)
11/14/2008 3:35:39 AM
Hi,
If your query is a 'select' query and it has multiple tables in it and
it's bound to the form you might try changing the Recordset Type of
that query.
open the query to design view, open the properities box, single-click
in a blank spot in the tables area of the query(I forget what that
area is called), scan down the properties and find 'recordset type'
change it from 'dynaset' to 'inconsistent update', save it. load the
form and try updating again.

it may help with your issue.
bobh.


On Nov 13, 10:35=A0pm, "zmic...@gmail.com" <samlamb...@gmail.com> wrote:
> On Nov 13, 4:48 pm, "Allen Browne" <AllenBro...@SeeSig.Invalid> wrote:
>
>
>
>
>
> > Is this a bound form? Or are you programmaticlly executing some updates=
 in
> > an action query or some code?
>
> > A bound form should not behave as you describe, but code might lock a w=
hole
> > table.
>
> > --
> > Allen Browne - Microsoft MVP. =A0Perth, Western Australia
> > Tips for Access users -http://allenbrowne.com/tips.html
> > Reply to group, rather than allenbrowne at mvps dot org.
>
> > "zmic...@gmail.com" <samlamb...@gmail.com> wrote in message
>
> >news:884e75d7-adb2-4bcb-a8c0-fc9109f75192@x16g2000prn.googlegroups.com..=
..
> > On Nov 13, 3:42 am, "Allen Browne" <AllenBro...@SeeSig.Invalid> wrote:
>
> > > Suggestions:
>
> > > 1. Is this on a wired (CAT5) network?
> > > No unstable connections (such as notebooks using WiFi)?
>
> > > 2. You say that users each have a different front end MDB on their ow=
n
> > > computers, but then you say they open the front end (singular)
> > > simultaneously. Is each one opening a separate front end MDB file tha=
t's
> > > on
> > > their own C: drive? (That's best.)
>
> > > 3. Check the open mode and locking strategy of *each* front end.
> > > In A2007, that's Office Button | Access Options | Advanced.
> > > In earlier versions it's Tools | Options | Advanced.
> > > You should see:
> > > - Default Open mode: Shared
> > > - Default Record Locking: No Locks
>
> > > 4. Close all front ends. Make sure the LDB file in the back-end folde=
r is
> > > gone. Then try again. (In practice, it's the first user in who sets t=
he
> > > actual locking mode.)
>
> > > --
> > > Allen Browne - Microsoft MVP. Perth, Western Australia
> > > Tips for Access users -http://allenbrowne.com/tips.html
> > > Reply to group, rather than allenbrowne at mvps dot org.
>
> > > "zmic...@gmail.com" <samlamb...@gmail.com> wrote in message
>
> > >news:d7557be2-e3ee-4707-9795-5abf2307da18@q30g2000prq.googlegroups.com=
....
>
> > > > Excuse my noobness. I am managing an access database that is shared
> > > > by 4 users. Management does not want to use any technologies outsid=
e
> > > > of access for this application (no SQL Server, etc). I have split t=
he
> > > > database into front end and back end databases and put the front en=
d
> > > > on each of the users' computers. All users can open the front end
> > > > simultaneously, but once somebody updates data in the form, the bac=
k
> > > > end locks up.
>
> > > > What I expect to happen:
> > > > - I assume that access should use optimistic locking (?) that would
> > > > only lock the records that are being updated, but it locks the enti=
re
> > > > database.
>
> > > > what I've tried:
> > > > - i checked and double checked that the query and form are set to n=
o-
> > > > locks
> > > > - I tried taking out all calculated values (string manipulations) i=
n
> > > > the query
> > > > - I'm not the only one working on this, so there have been quite a =
few
> > > > other things looked at to no avail.
>
> > > > I'm stumped. Thanks for any help.
>
> > Allen,
>
> > Thanks so much for your response
>
> > 1. Yes every computer has a =A0wired.
>
> > 2. Each user has their own ACCDB front end on their own C: drive.
>
> > 3. Each front end is configured as you suggested in Access Options (I
> > will double check today)
>
> > 4. The locking file is not created until a user updates the data via
> > the form. =A0Any computer that has that same form already open can make
> > changes as well. =A0After an update is made, any new instance of the
> > form is "not updatable." When the updating users close the form, the
> > locking file goes away.
>
> > Something about updating the query through the form locks the back end
> > database, then the back end is locked until the form is completely
> > closed.
>
> > I think the problem is occurring at the point that someone updates.
>
> > Thanks,
>
> > Sam
>
> Thanks for the responses. =A0I may request a SQL Server instance. =A0With
> the right argument I may be able to convince my higher-ups to allow
> it. =A0But here are the answers to the questions asked in your
> responses:
>
> @Salad:
> What version of Access are you using? Access 2007 (enterprise I think)
>
> Is the backend on a network server? Yes it is on a shared drive that
> is mapped to each workstation. =A0The linked tables are referencing the
> backend via drive name (i.e. Q:...) rather than the network name.
>
> Keith Wilby mentioned rights. =A0I think in Novell for rights; read,
> write, erase (delete), modify, create. =A0You said you had read/write.
> Are there other rights you can grant? =A0They only have read/write, no
> delete, modify, or create. =A0I do not have rights to change these, but
> might be able to request it if I find out that it is a must-have.
>
> Are you up to date on program service packs on all computers?
> yes. I can check, but I believe so.
>
> @Allen
>
> By bound form do you mean the form is bound to a query, then yes. =A0In
> the data source property, there is a query. =A0The query simply merges
> two tables on a foreign key. =A0values from the query are available in
> the form and when you put your cursor in the textbox, you can update
> the data. =A0That is when the backend locks up.
>
> They want this thing working by tomorrow, so if it's still not working
> by end of day, I'll request a SQL Server DB.
>
> Thanks for the help.
>
> Sam- Hide quoted text -
>
> - Show quoted text -

0
vulcaned (287)
11/14/2008 7:26:43 PM
On Nov 14, 12:26=A0pm, bobh <vulca...@yahoo.com> wrote:
> Hi,
> If your query is a 'select' query and it has multiple tables in it and
> it's bound to the form you might try changing the Recordset Type of
> that query.
> open the query to design view, open the properities box, single-click
> in a blank spot in the tables area of the query(I forget what that
> area is called), scan down the properties and find 'recordset type'
> change it from 'dynaset' to 'inconsistent update', save it. load the
> form and try updating again.
>
> it may help with your issue.
> bobh.
>
> On Nov 13, 10:35=A0pm, "zmic...@gmail.com" <samlamb...@gmail.com> wrote:
>
> > On Nov 13, 4:48 pm, "Allen Browne" <AllenBro...@SeeSig.Invalid> wrote:
>
> > > Is this a bound form? Or are you programmaticlly executing some updat=
es in
> > > an action query or some code?
>
> > > A bound form should not behave as you describe, but code might lock a=
 whole
> > > table.
>
> > > --
> > > Allen Browne - Microsoft MVP. =A0Perth, Western Australia
> > > Tips for Access users -http://allenbrowne.com/tips.html
> > > Reply to group, rather than allenbrowne at mvps dot org.
>
> > > "zmic...@gmail.com" <samlamb...@gmail.com> wrote in message
>
> > >news:884e75d7-adb2-4bcb-a8c0-fc9109f75192@x16g2000prn.googlegroups.com=
....
> > > On Nov 13, 3:42 am, "Allen Browne" <AllenBro...@SeeSig.Invalid> wrote=
:
>
> > > > Suggestions:
>
> > > > 1. Is this on a wired (CAT5) network?
> > > > No unstable connections (such as notebooks using WiFi)?
>
> > > > 2. You say that users each have a different front end MDB on their =
own
> > > > computers, but then you say they open the front end (singular)
> > > > simultaneously. Is each one opening a separate front end MDB file t=
hat's
> > > > on
> > > > their own C: drive? (That's best.)
>
> > > > 3. Check the open mode and locking strategy of *each* front end.
> > > > In A2007, that's Office Button | Access Options | Advanced.
> > > > In earlier versions it's Tools | Options | Advanced.
> > > > You should see:
> > > > - Default Open mode: Shared
> > > > - Default Record Locking: No Locks
>
> > > > 4. Close all front ends. Make sure the LDB file in the back-end fol=
der is
> > > > gone. Then try again. (In practice, it's the first user in who sets=
 the
> > > > actual locking mode.)
>
> > > > --
> > > > Allen Browne - Microsoft MVP. Perth, Western Australia
> > > > Tips for Access users -http://allenbrowne.com/tips.html
> > > > Reply to group, rather than allenbrowne at mvps dot org.
>
> > > > "zmic...@gmail.com" <samlamb...@gmail.com> wrote in message
>
> > > >news:d7557be2-e3ee-4707-9795-5abf2307da18@q30g2000prq.googlegroups.c=
om...
>
> > > > > Excuse my noobness. I am managing an access database that is shar=
ed
> > > > > by 4 users. Management does not want to use any technologies outs=
ide
> > > > > of access for this application (no SQL Server, etc). I have split=
 the
> > > > > database into front end and back end databases and put the front =
end
> > > > > on each of the users' computers. All users can open the front end
> > > > > simultaneously, but once somebody updates data in the form, the b=
ack
> > > > > end locks up.
>
> > > > > What I expect to happen:
> > > > > - I assume that access should use optimistic locking (?) that wou=
ld
> > > > > only lock the records that are being updated, but it locks the en=
tire
> > > > > database.
>
> > > > > what I've tried:
> > > > > - i checked and double checked that the query and form are set to=
 no-
> > > > > locks
> > > > > - I tried taking out all calculated values (string manipulations)=
 in
> > > > > the query
> > > > > - I'm not the only one working on this, so there have been quite =
a few
> > > > > other things looked at to no avail.
>
> > > > > I'm stumped. Thanks for any help.
>
> > > Allen,
>
> > > Thanks so much for your response
>
> > > 1. Yes every computer has a =A0wired.
>
> > > 2. Each user has their own ACCDB front end on their own C: drive.
>
> > > 3. Each front end is configured as you suggested in Access Options (I
> > > will double check today)
>
> > > 4. The locking file is not created until a user updates the data via
> > > the form. =A0Any computer that has that same form already open can ma=
ke
> > > changes as well. =A0After an update is made, any new instance of the
> > > form is "not updatable." When the updating users close the form, the
> > > locking file goes away.
>
> > > Something about updating the query through the form locks the back en=
d
> > > database, then the back end is locked until the form is completely
> > > closed.
>
> > > I think the problem is occurring at the point that someone updates.
>
> > > Thanks,
>
> > > Sam
>
> > Thanks for the responses. =A0I may request a SQL Server instance. =A0Wi=
th
> > the right argument I may be able to convince my higher-ups to allow
> > it. =A0But here are the answers to the questions asked in your
> > responses:
>
> > @Salad:
> > What version of Access are you using? Access 2007 (enterprise I think)
>
> > Is the backend on a network server? Yes it is on a shared drive that
> > is mapped to each workstation. =A0The linked tables are referencing the
> > backend via drive name (i.e. Q:...) rather than the network name.
>
> > Keith Wilby mentioned rights. =A0I think in Novell for rights; read,
> > write, erase (delete), modify, create. =A0You said you had read/write.
> > Are there other rights you can grant? =A0They only have read/write, no
> > delete, modify, or create. =A0I do not have rights to change these, but
> > might be able to request it if I find out that it is a must-have.
>
> > Are you up to date on program service packs on all computers?
> > yes. I can check, but I believe so.
>
> > @Allen
>
> > By bound form do you mean the form is bound to a query, then yes. =A0In
> > the data source property, there is a query. =A0The query simply merges
> > two tables on a foreign key. =A0values from the query are available in
> > the form and when you put your cursor in the textbox, you can update
> > the data. =A0That is when the backend locks up.
>
> > They want this thing working by tomorrow, so if it's still not working
> > by end of day, I'll request a SQL Server DB.
>
> > Thanks for the help.
>
> > Sam- Hide quoted text -
>
> > - Show quoted text -

bobh,

I tried it, but to no avail.  It still locks up.  In fact, if I open
just the query on one computer, it will be locked for any new instance
of the datasheet.  I cannot figure this on out.
0
samlambson (14)
11/14/2008 8:20:39 PM
1. for the join in the query you are using as the form's recordsource
a one-to-one join and a one-to-many join??

2. have you tried updating each table singularly? might help with
determining if a table is locking up?

bobh.

On Nov 14, 3:20=A0pm, Sam Lambson <samlamb...@gmail.com> wrote:
> On Nov 14, 12:26=A0pm, bobh <vulca...@yahoo.com> wrote:
>
>
>
>
>
> > Hi,
> > If your query is a 'select' query and it has multiple tables in it and
> > it's bound to the form you might try changing the Recordset Type of
> > that query.
> > open the query to design view, open the properities box, single-click
> > in a blank spot in the tables area of the query(I forget what that
> > area is called), scan down the properties and find 'recordset type'
> > change it from 'dynaset' to 'inconsistent update', save it. load the
> > form and try updating again.
>
> > it may help with your issue.
> > bobh.
>
> > On Nov 13, 10:35=A0pm, "zmic...@gmail.com" <samlamb...@gmail.com> wrote=
:
>
> > > On Nov 13, 4:48 pm, "Allen Browne" <AllenBro...@SeeSig.Invalid> wrote=
:
>
> > > > Is this a bound form? Or are you programmaticlly executing some upd=
ates in
> > > > an action query or some code?
>
> > > > A bound form should not behave as you describe, but code might lock=
 a whole
> > > > table.
>
> > > > --
> > > > Allen Browne - Microsoft MVP. =A0Perth, Western Australia
> > > > Tips for Access users -http://allenbrowne.com/tips.html
> > > > Reply to group, rather than allenbrowne at mvps dot org.
>
> > > > "zmic...@gmail.com" <samlamb...@gmail.com> wrote in message
>
> > > >news:884e75d7-adb2-4bcb-a8c0-fc9109f75192@x16g2000prn.googlegroups.c=
om...
> > > > On Nov 13, 3:42 am, "Allen Browne" <AllenBro...@SeeSig.Invalid> wro=
te:
>
> > > > > Suggestions:
>
> > > > > 1. Is this on a wired (CAT5) network?
> > > > > No unstable connections (such as notebooks using WiFi)?
>
> > > > > 2. You say that users each have a different front end MDB on thei=
r own
> > > > > computers, but then you say they open the front end (singular)
> > > > > simultaneously. Is each one opening a separate front end MDB file=
 that's
> > > > > on
> > > > > their own C: drive? (That's best.)
>
> > > > > 3. Check the open mode and locking strategy of *each* front end.
> > > > > In A2007, that's Office Button | Access Options | Advanced.
> > > > > In earlier versions it's Tools | Options | Advanced.
> > > > > You should see:
> > > > > - Default Open mode: Shared
> > > > > - Default Record Locking: No Locks
>
> > > > > 4. Close all front ends. Make sure the LDB file in the back-end f=
older is
> > > > > gone. Then try again. (In practice, it's the first user in who se=
ts the
> > > > > actual locking mode.)
>
> > > > > --
> > > > > Allen Browne - Microsoft MVP. Perth, Western Australia
> > > > > Tips for Access users -http://allenbrowne.com/tips.html
> > > > > Reply to group, rather than allenbrowne at mvps dot org.
>
> > > > > "zmic...@gmail.com" <samlamb...@gmail.com> wrote in message
>
> > > > >news:d7557be2-e3ee-4707-9795-5abf2307da18@q30g2000prq.googlegroups=
..com...
>
> > > > > > Excuse my noobness. I am managing an access database that is sh=
ared
> > > > > > by 4 users. Management does not want to use any technologies ou=
tside
> > > > > > of access for this application (no SQL Server, etc). I have spl=
it the
> > > > > > database into front end and back end databases and put the fron=
t end
> > > > > > on each of the users' computers. All users can open the front e=
nd
> > > > > > simultaneously, but once somebody updates data in the form, the=
 back
> > > > > > end locks up.
>
> > > > > > What I expect to happen:
> > > > > > - I assume that access should use optimistic locking (?) that w=
ould
> > > > > > only lock the records that are being updated, but it locks the =
entire
> > > > > > database.
>
> > > > > > what I've tried:
> > > > > > - i checked and double checked that the query and form are set =
to no-
> > > > > > locks
> > > > > > - I tried taking out all calculated values (string manipulation=
s) in
> > > > > > the query
> > > > > > - I'm not the only one working on this, so there have been quit=
e a few
> > > > > > other things looked at to no avail.
>
> > > > > > I'm stumped. Thanks for any help.
>
> > > > Allen,
>
> > > > Thanks so much for your response
>
> > > > 1. Yes every computer has a =A0wired.
>
> > > > 2. Each user has their own ACCDB front end on their own C: drive.
>
> > > > 3. Each front end is configured as you suggested in Access Options =
(I
> > > > will double check today)
>
> > > > 4. The locking file is not created until a user updates the data vi=
a
> > > > the form. =A0Any computer that has that same form already open can =
make
> > > > changes as well. =A0After an update is made, any new instance of th=
e
> > > > form is "not updatable." When the updating users close the form, th=
e
> > > > locking file goes away.
>
> > > > Something about updating the query through the form locks the back =
end
> > > > database, then the back end is locked until the form is completely
> > > > closed.
>
> > > > I think the problem is occurring at the point that someone updates.
>
> > > > Thanks,
>
> > > > Sam
>
> > > Thanks for the responses. =A0I may request a SQL Server instance. =A0=
With
> > > the right argument I may be able to convince my higher-ups to allow
> > > it. =A0But here are the answers to the questions asked in your
> > > responses:
>
> > > @Salad:
> > > What version of Access are you using? Access 2007 (enterprise I think=
)
>
> > > Is the backend on a network server? Yes it is on a shared drive that
> > > is mapped to each workstation. =A0The linked tables are referencing t=
he
> > > backend via drive name (i.e. Q:...) rather than the network name.
>
> > > Keith Wilby mentioned rights. =A0I think in Novell for rights; read,
> > > write, erase (delete), modify, create. =A0You said you had read/write=
..
> > > Are there other rights you can grant? =A0They only have read/write, n=
o
> > > delete, modify, or create. =A0I do not have rights to change these, b=
ut
> > > might be able to request it if I find out that it is a must-have.
>
> > > Are you up to date on program service packs on all computers?
> > > yes. I can check, but I believe so.
>
> > > @Allen
>
> > > By bound form do you mean the form is bound to a query, then yes. =A0=
In
> > > the data source property, there is a query. =A0The query simply merge=
s
> > > two tables on a foreign key. =A0values from the query are available i=
n
> > > the form and when you put your cursor in the textbox, you can update
> > > the data. =A0That is when the backend locks up.
>
> > > They want this thing working by tomorrow, so if it's still not workin=
g
> > > by end of day, I'll request a SQL Server DB.
>
> > > Thanks for the help.
>
> > > Sam- Hide quoted text -
>
> > > - Show quoted text -
>
> bobh,
>
> I tried it, but to no avail. =A0It still locks up. =A0In fact, if I open
> just the query on one computer, it will be locked for any new instance
> of the datasheet. =A0I cannot figure this on out.- Hide quoted text -
>
> - Show quoted text -

0
vulcaned (287)
11/14/2008 8:37:48 PM
Yes.  When I open any database table it is not updatable, not just
those being queried. I The form has a one to one relationship with the
query, the query is pulling from two linked tables.

0
samlambson (14)
11/14/2008 8:56:53 PM
I'm a bit confused but, I work in XP and I don't have 2007

1. open both the front-end and the back-end seperately, click File-
Database properties, click on the 'general' tab and check the
'attributes to be sure 'read-only' is not checked off.

2. how are the two tables joined in the query itself ?? joined as a
line or a line with an arrow at one end?

3. have you tried doing a refresh links or even delete linked tables
and linking them back in again? In 2007 can you apply anything
criteria/parameters when linking to tables?

bobh.

On Nov 14, 3:56=A0pm, Sam Lambson <samlamb...@gmail.com> wrote:
> Yes. =A0When I open any database table it is not updatable, not just
> those being queried. I The form has a one to one relationship with the
> query, the query is pulling from two linked tables.

0
vulcaned (287)
11/14/2008 9:22:08 PM
Sam Lambson wrote:

> Yes.  When I open any database table it is not updatable, not just
> those being queried. I The form has a one to one relationship with the
> query, the query is pulling from two linked tables.
> 
I'd probably do this.  Create a new backend database called JunkBE.  I'd 
create a table called Junk with a couple of fields.  Save and exit

I'd then create a new fe database called JunkFE.  I'd then link to table 
Junk in JunkBE.  I'd then use the form builder wizard and build a form 
called Junk bound to table Junk or to a query based on table Junk.

I'd then give the FE to a couple of people and see if they can 
add/delete/modify records in form Junk simultaneously.

Setting up Junk should take a few minutes to do, it'll probably take 
more time getting it distributed.  At least you'd see if Access is 
multi-user in your environment.

It sounds like your existing database is quite minimal...only 1 form. 
If you can get JunkFE/BE to work, maybe rewrite your existing app.  At 
least build the form, copy/paste the code module for the form, and see 
if that works.

If your version is not multi-user you could ask for a new version of 
Access from your vendor and specify you want the network, multi-user 
version and not the single stand-alone version you purchased.



Just kidding :)

0
oil (4047)
11/14/2008 9:39:26 PM
On Nov 14, 2:22=A0pm, bobh <vulca...@yahoo.com> wrote:
> I'm a bit confused but, I work in XP and I don't have 2007
>
> 1. open both the front-end and the back-end seperately, click File-
> Database properties, click on the 'general' tab and check the
> 'attributes to be sure 'read-only' is not checked off.
>
> 2. how are the two tables joined in the query itself ?? joined as a
> line or a line with an arrow at one end?
>
> 3. have you tried doing a refresh links or even delete linked tables
> and linking them back in again? In 2007 can you apply anything
> criteria/parameters when linking to tables?
>
> bobh.
>
> On Nov 14, 3:56=A0pm, Sam Lambson <samlamb...@gmail.com> wrote:
>
> > Yes. =A0When I open any database table it is not updatable, not just
> > those being queried. I The form has a one to one relationship with the
> > query, the query is pulling from two linked tables.

1. The files are not read only when I initially open them.  If I try
to open the back end database after someone has updated a field and
before they close the form, the database is read-only.

2. The two tables in design view are connected by a line, not an
arrow.  They are linked on a common ID.

3. I have tried refreshing the linked tables, but it doesn't change
the behavior.  There appear to be no options other than changing the
location of the source database.

Thanks for your help.

0
samlambson (14)
11/14/2008 9:42:10 PM
On Nov 14, 3:42=A0pm, Sam Lambson <samlamb...@gmail.com> wrote:
> On Nov 14, 2:22=A0pm, bobh <vulca...@yahoo.com> wrote:
>
>
>
> > I'm a bit confused but, I work in XP and I don't have 2007
>
> > 1. open both the front-end and the back-end seperately, click File-
> > Database properties, click on the 'general' tab and check the
> > 'attributes to be sure 'read-only' is not checked off.
>
> > 2. how are the two tables joined in the query itself ?? joined as a
> > line or a line with an arrow at one end?
>
> > 3. have you tried doing a refresh links or even delete linked tables
> > and linking them back in again? In 2007 can you apply anything
> > criteria/parameters when linking to tables?
>
> > bobh.
>
> > On Nov 14, 3:56=A0pm, Sam Lambson <samlamb...@gmail.com> wrote:
>
> > > Yes. =A0When I open any database table it is not updatable, not just
> > > those being queried. I The form has a one to one relationship with th=
e
> > > query, the query is pulling from two linked tables.
>
> 1. The files are not read only when I initially open them. =A0If I try
> to open the back end database after someone has updated a field and
> before they close the form, the database is read-only.
>
> 2. The two tables in design view are connected by a line, not an
> arrow. =A0They are linked on a common ID.
>
> 3. I have tried refreshing the linked tables, but it doesn't change
> the behavior. =A0There appear to be no options other than changing the
> location of the source database.
>
> Thanks for your help.

I can't help but think this is a permissions issue.  You stated
earlier that your users "only have read/write, no
delete, modify, or create" and I am assuming this pertains to the
folder and not the database itself.  Your users absolutely must have
read, write, create, and delete rights to the _folder_ where the back
end database is located.  If they need to change data then they must
have read and write access to the database file itself.  I'd make sure
your server admins haven't done something strange.  See if they'll
grant full control to to your users on the folder where your database
is on a trial basis to see if that fixes the problem.

Also, along the lines of what Salad suggested with the 'junk'
database...try splitting the sample Northwind database into front and
back end and put the back end on the server, preferably in the same
folder as the back end of your other database.  See if your users can
get Northwind to manifest (or not manifest) the problem you described
by using the front end you created.

Also...are you using the new 'multivalue' fields in any of your
tables?

Bruce
0
11/14/2008 11:35:31 PM
>
> I can't help but think this is a permissions issue. =A0You stated
> earlier that your users "only have read/write, no
> delete, modify, or create" and I am assuming this pertains to the
> folder and not the database itself. =A0Your users absolutely must have
> read, write, create, and delete rights to the _folder_ where the back
> end database is located. =A0If they need to change data then they must
> have read and write access to the database file itself. =A0I'd make sure
> your server admins haven't done something strange. =A0See if they'll
> grant full control to to your users on the folder where your database
> is on a trial basis to see if that fixes the problem.
>
> Also, along the lines of what Salad suggested with the 'junk'
> database...try splitting the sample Northwind database into front and
> back end and put the back end on the server, preferably in the same
> folder as the back end of your other database. =A0See if your users can
> get Northwind to manifest (or not manifest) the problem you described
> by using the front end you created.
>
> Also...are you using the new 'multivalue' fields in any of your
> tables?
>
> Bruce

Thanks Bruce,

I have checked and double checked.  All users accessing the database
have full control on the folder that the database is in.  I granted
full control to the file itself as well.  I don't think it's a
permissions issue.  In fact, after troubleshooting some more I don't
think it is an issue with my form or query, but with the tables
themselves.

I did the following: On one computer I open the front end and open a
linked table.  It opened in datasheet view and was editable.  When I
open the front end on another computer and try to open ANY linked
table, query, or form, it is not editable.  The whole database is
locked down, not just the tables concerned.

Would SQL Server act differently or is my problem in my front end.  I
can't seem to figure this one out since everyone's Access Options are
set to share and have no locks, each query and form is set to have no
locks.

There is one thing I haven't tried and that is to have "row level
locking" set in the table properties.  I don't know if that would free
things up.  I'm stumped.

Sam
0
samlambson (14)
11/15/2008 12:30:05 AM
On Nov 14, 4:35=A0pm, BruceB <deluxeinformat...@gmail.com> wrote:
> On Nov 14, 3:42=A0pm, Sam Lambson <samlamb...@gmail.com> wrote:
>
>
>
> > On Nov 14, 2:22=A0pm, bobh <vulca...@yahoo.com> wrote:
>
> > > I'm a bit confused but, I work in XP and I don't have 2007
>
> > > 1. open both the front-end and the back-end seperately, click File-
> > > Database properties, click on the 'general' tab and check the
> > > 'attributes to be sure 'read-only' is not checked off.
>
> > > 2. how are the two tables joined in the query itself ?? joined as a
> > > line or a line with an arrow at one end?
>
> > > 3. have you tried doing a refresh links or even delete linked tables
> > > and linking them back in again? In 2007 can you apply anything
> > > criteria/parameters when linking to tables?
>
> > > bobh.
>
> > > On Nov 14, 3:56=A0pm, Sam Lambson <samlamb...@gmail.com> wrote:
>
> > > > Yes. =A0When I open any database table it is not updatable, not jus=
t
> > > > those being queried. I The form has a one to one relationship with =
the
> > > > query, the query is pulling from two linked tables.
>
> > 1. The files are not read only when I initially open them. =A0If I try
> > to open the back end database after someone has updated a field and
> > before they close the form, the database is read-only.
>
> > 2. The two tables in design view are connected by a line, not an
> > arrow. =A0They are linked on a common ID.
>
> > 3. I have tried refreshing the linked tables, but it doesn't change
> > the behavior. =A0There appear to be no options other than changing the
> > location of the source database.
>
> > Thanks for your help.
>
> I can't help but think this is a permissions issue. =A0You stated
> earlier that your users "only have read/write, no
> delete, modify, or create" and I am assuming this pertains to the
> folder and not the database itself. =A0Your users absolutely must have
> read, write, create, and delete rights to the _folder_ where the back
> end database is located. =A0If they need to change data then they must
> have read and write access to the database file itself. =A0I'd make sure
> your server admins haven't done something strange. =A0See if they'll
> grant full control to to your users on the folder where your database
> is on a trial basis to see if that fixes the problem.
>
> Also, along the lines of what Salad suggested with the 'junk'
> database...try splitting the sample Northwind database into front and
> back end and put the back end on the server, preferably in the same
> folder as the back end of your other database. =A0See if your users can
> get Northwind to manifest (or not manifest) the problem you described
> by using the front end you created.
>
> Also...are you using the new 'multivalue' fields in any of your
> tables?
>
> Bruce

And I'll try to split the northwind database.  That is a good idea.

Thanks Bruce et al.
0
samlambson (14)
11/15/2008 12:30:46 AM
Sam Lambson <samlambson@gmail.com> wrote in
news:d099411a-43fa-4895-9a13-eaf81cf75098@i18g2000prf.googlegroups.co
m: 

> I did the following: On one computer I open the front end and open
> a linked table.  It opened in datasheet view and was editable. 
> When I open the front end on another computer and try to open ANY
> linked table, query, or form, it is not editable.  The whole
> database is locked down, not just the tables concerned.

Have you gotten everyone out and deleted the LDB file? Have you set
the locking in all your application's forms to be optimistic (i.e.,
No Locks)? 

> Would SQL Server act differently or is my problem in my front end.
>  I can't seem to figure this one out since everyone's Access
> Options are set to share and have no locks, each query and form is
> set to have no locks.

Fix the problem with your Access setups, rather than buying all the
problems that come with upsizing to SQL Server. 

> There is one thing I haven't tried and that is to have "row level
> locking" set in the table properties.  I don't know if that would
> free things up.  I'm stumped.

No, this isn't going to help.

In another post you mention something about splitting the northwind
database. Is your app split? If not, that's likely the source of all
your problems. You should split the app and each user should have an
individual front end. If you don't do that, then nobody here is
going to be much interested in offering any further advice, since
you'll be going against the most fundamental of best practices in
Access application development. 

-- 
David W. Fenton                  http://www.dfenton.com/ 
usenet at dfenton dot com    http://www.dfenton.com/DFA/
0
XXXusenet (2387)
11/16/2008 4:05:20 AM
Reply:

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Access 07: My query is making the back end database lock up
Hi, This is similar to another post, because I still haven't gotten to the bottom of it. I have a back end database on a shared drive. Each (of 4) user has a front end file on their own C: drive. The main form that users have is bound to a query which merges 2 linked tables. It is not an action query. When the query is executed, everyone still has access to the form/query, until somebody makes an update. Or so it seems. I have found that if I close and open the datasheet view of the query on one computer when it is open on another computer, the query is not updatable the second tim...

Can an Access 2013 database link to an Access 97 back end?
Can an Access 2013 database link to an Access 97 back end, perhaps using ODBC even? On Monday, September 29, 2014 5:17:03 PM UTC-4, Neil wrote: > Can an Access 2013 database link to an Access 97 back end, perhaps using > > ODBC even? I think this answers the question. http://office.microsoft.com/en-us/access-help/convert-a-database-to-the-accdb-file-format-HA102749625.aspx. I don't see why the links to the backend wouldn't work unless you have mapping issues or something similar. On 9/30/2014 8:02 AM, Patrick Finucane wrote: > On Monday, September 29, 2014 ...

Locked out from MS Access database
Hi All: Our company has been using a ms access 2000 database on a share drive, every user logs into the database using shortcut on individual desktop that goes to shared drive. Now today while making changes to the security ->User & Groups, my PC froze and when I restarted it says "You do not have permission to access this, Contact your administrator". I deleted the .ldb file, with no luck. Any help is appreciated. Thanks Viru Download the Security FAQ from http://www.microsoft.com/downloads -- it's the authoritative source for Access security information. Unfortunate...

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a database, is a database, is a err database
How many times can we see the same request from someone who wants to access data from a 'pick' database through what has come to be 'standard' practices (odbc, oledb) and still get the same old sloppy ' buy this proprietary utility (and above all, my services)' answer. I think most of these pick flavors should have some sort of layer (by now!) to handle this; If someone needs to do this, the service is really 'education' i.e to show them how. Lets cut the shit now and stop with this tired and silly BS and sad marketing schlock. Regards, -Jim ...

MS Access database with a file extension of .mde
Good day: Can you kindly assist me in opening a MS Access database with a file extension of .mde? I get an error message stating "This database is in an unrecognized format". Any help is greatfull. TIA This usually indicates an attempt to open an Access 2000 database in an earlier version. -- MichKa [MS] NLS Collation/Locale/Keyboard Development Globalization Infrastructure and Font Technologies This posting is provided "AS IS" with no warranties, and confers no rights. "mary" <chloemelmom@yahoo.com> wrote in message news:a0a64947.0311151242.4df0c...

How to reset or disconnect all conections to an MS Access database if the database is hung up?
Hi, All: &nbsp; Sometime I do not knwo why my database in local C drive is locked. If I restart the LabVIEW software, it works fine. Is there a way to disconnect all connections before you make a new connection? I remember I used this function a couple of years ago but I could not find the function in new LabVIEW database connectivity tool kit. I am using LabVIEW 8.0.1. Thanks. &nbsp; Jim Is it DB Close Connection? You VI should contain one of these. <img src="http://forums.ni.com/attachments/ni/170/194552/1/DB%20Close%20Connection.jpg"> DavidMessage Edited by David C...

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