At 11:15 PM 8/23/01 +0900, you wrote:
>There is a single database file accessed by a small Macintosh ethernet
LAN. The file is kept on the server's shared folder
>and a few other computers access it occasionally and make changes. When
it was in hypercard, if it was currently being used,
>then when one of the other computers tried to access it, it got a "this
file is busy" report and they could not access it
>until after the other person was done. This kept things nice and kosher.
However, after I converted it to Metacard, it no
>longer reports this, and I get simultaneous changes from multiple
computers, some of which do not get saved. This is a big
>problem. Any solutions would be greatly appreciated.
>
Mark!
My easiest solution is to use a text file as a flag. When your client app
starts up it first checks to see if the text file (which resides on your
server's shared folder) contains the words "In Use" - or "Whoa" or
something. If it does, the app eithers waits a short time or gives the user
a choice before trying again.
If the text file reads "Go!" then immediately continue starting your client
app and write "In Use" to your text file. Do your DB work and when
quitting, write "Go!" to the text file.
This works for me in a cross platfrom environment as well.
Good Luck
Jack Rarick
Braintree Athletic Systems
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