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  1.  Home
  2. RPG400-L
  3. November 2008

problem with duplicate records

Hi,

Two users have managed to create the same archive reference number while creating two different clients.

Like this :

ArchiveFile
Product1 Client1 RefNo1 10:41:57(time)
Product2 Client2 RefNo1 10:41:57

The program would crash if the problem occurred with the same product. As it is 2 users in different services created the records at the same time.

The user enters the client details and hits the enter key.
The program writes the client to the client file then calls an external procedure to find an unused archive number then write this number to the archive file.

The client files look like this
Product1_clients
Client1 created at 10:41:53

Product2_clients
Client2 created at 10:41:56

I'm assuming that the creation of client1 took so long that the creation of client2 caught up. The same time in the ArchiveFile is just a hazard.

I can think of ways to fix it, but I'd rather ask what are we doing wrong?

Thanks.

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