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Repost - Possible to trap this multi-user situation?

P: n/a
I posted a question on 5/5/08 asking how to trap an error caused by
multiple users trying to access the same patient. Here's what I
posted:

"Using A2003. I've got an FE with a main form with a subform. The
subform is a mixture of bound and unbound fields. The main form is
unbound and all it has on it is a combobox to choose a patient's
name. Once the patient is chosen, the subform refreshes to show that
patient's data. The problem I'm having is that 2 or more users could
select the same patient and attempt to update the subform. If user
#2
tries to update a bound field (haven't tried unbound yet) on the
subform, they get a "beep" and the "no edit" icon appears in the
record selector on the left-side. I'm trying to trap that to display
a message to them that the patient is being edited by someone else.
But I cannot seem to figure out where the error is occurring. I've
set breakpoints in the Form_Error event, but it won't trap the error.
I've set breakpoints in events for various bound fields on the
subform
but I still cannot trap the error. I would like for other users to
be
able to view the patient's data while another user is editing, just
not be able to edit it.

The BE mdb is set to Shared, and "Edited Record".
Thanks for any help or advice. "

Larry Linson suggested: "In multiuser environments, each user should
have his/her own copy of the
Front End, linked to shared tables with data, in the Back End. That
will
alleviate your problem... provided you use proper locking, which is
certainly possible... "

I stated in my original posting that is how I have it set up. Each
user has their own FE, the BE is set up as "Shared" and "Edited
Record". Is there a better way to set this up?

Thanks for any help or advice.
Jun 27 '08 #1
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2 Replies


P: n/a
"EManning" <ma**********@hotmail.comwrote in message
news:5f**********************************@34g2000h sh.googlegroups.com...
>I posted a question on 5/5/08 asking how to trap an error caused by
multiple users trying to access the same patient. Here's what I
posted:

"Using A2003. I've got an FE with a main form with a subform. The
subform is a mixture of bound and unbound fields. The main form is
unbound and all it has on it is a combobox to choose a patient's
name. Once the patient is chosen, the subform refreshes to show that
patient's data. The problem I'm having is that 2 or more users could
select the same patient and attempt to update the subform. If user
#2
tries to update a bound field (haven't tried unbound yet) on the
subform, they get a "beep" and the "no edit" icon appears in the
record selector on the left-side. I'm trying to trap that to display
a message to them that the patient is being edited by someone else.
But I cannot seem to figure out where the error is occurring. I've
set breakpoints in the Form_Error event, but it won't trap the error.
I've set breakpoints in events for various bound fields on the
subform
but I still cannot trap the error. I would like for other users to
be
able to view the patient's data while another user is editing, just
not be able to edit it.

The BE mdb is set to Shared, and "Edited Record".
Thanks for any help or advice. "

Larry Linson suggested: "In multiuser environments, each user should
have his/her own copy of the
Front End, linked to shared tables with data, in the Back End. That
will
alleviate your problem... provided you use proper locking, which is
certainly possible... "

I stated in my original posting that is how I have it set up. Each
user has their own FE, the BE is set up as "Shared" and "Edited
Record". Is there a better way to set this up?

Thanks for any help or advice.
You could create a new table that contains two fields, User & PatientName.
Whenever a user selects a patient via the combobox on the main form, a
record could be added/updated in the new table. Also, the table can be
searched to see if that PatientName already exists in the new table. If it
already exists, then another User must already have the subform open, and
the subform can be opened as readonly for the current user (with a msg).
When a User closes the main form, then their record is deleted from the new
table.

As Larry suggested, this processs seems too complicated as Access has
built-in functions to handle this circumstance. Maybe the users merely need
to be educated as to what the "beep" and "no edit" icon mean.

Fred Zuckerman
Jun 27 '08 #2

P: n/a
On May 8, 9:05*am, "Fred Zuckerman" <Zuckerm...@sbcglobal.netwrote:
"EManning" <manning_n...@hotmail.comwrote in message

news:5f**********************************@34g2000h sh.googlegroups.com...


I posted a question on 5/5/08 asking how to trap an error caused by
multiple users trying to access the same patient. *Here's what I
posted:
"Using A2003. *I've got an FE with a main form with a subform. *The
subform is a mixture of bound and unbound fields. *The main form is
unbound and all it has on it is a combobox to choose a patient's
name. *Once the patient is chosen, the subform refreshes to show that
patient's data. *The problem I'm having is that 2 or more users could
select the same patient and attempt to update the subform. *If user
#2
tries to update a bound field (haven't tried unbound yet) on the
subform, they get a "beep" and the "no edit" icon appears in the
record selector on the left-side. *I'm trying to trap that to display
a message to them that the patient is being edited by someone else.
But I cannot seem to figure out where the error is occurring. *I've
set breakpoints in the Form_Error event, but it won't trap the error.
I've set breakpoints in events for various bound fields on the
subform
but I still cannot trap the error. *I would like for other users to
be
able to view the patient's data while another user is editing, just
not be able to edit it.
The BE mdb is set to Shared, and "Edited Record".
Thanks for any help or advice. "
Larry Linson suggested: *"In multiuser environments, each user should
have his/her own copy of the
Front End, linked to shared tables with data, in the Back End. *That
will
alleviate your problem... provided you use proper locking, which is
certainly possible... "
I stated in my original posting that is how I have it set up. *Each
user has their own FE, the BE is set up as "Shared" and "Edited
Record". *Is there a better way to set this up?
Thanks for any help or advice.

You could create a new table that contains two fields, User & PatientName.
Whenever a user selects a patient via the combobox on the main form, a
record could be added/updated in the new table. Also, the table can be
searched to see if that PatientName already exists in the new table. If it
already exists, then another User must already have the subform open, and
the subform can be opened as readonly for the current user (with a msg).
When a User closes the main form, then their record is deleted from the new
table.

As Larry suggested, this processs seems too complicated as Access has
built-in functions to handle this circumstance. Maybe the users merely need
to be educated as to what the "beep" and "no edit" icon mean.

Fred Zuckerman- Hide quoted text -

- Show quoted text -
Yeah, I'm thinking just educating them on the beep and "no edit" icon
would be sufficient. Multiple users on the same patient will rarely
happen. Good suggestion on the new table. I may decide to go with
that. Thanks.

Jun 27 '08 #3

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