RE: duplicate record Id's in multi user environment

[Mark Walter <mwalter@xxxxxxxxxx>]

You could do the same thing with a data area. "*LOCK" in the data area. 
increment it, write your record and update it.

-----Original Message-----
From:   paul cunnane [SMTP:paul@cunnane.net]
Sent:   Thursday, October 12, 2000 4:41 AM
To:     RPG400-L@midrange.com
Subject:        Re: duplicate record Id's in multi user environment

Simple answer: a separate `next record ID' file.  The SQLRPGLE program reads
the one and only record in this file, increments the record ID and updates.
Because a record lock is held between the read and the update, there is no
way for two users to get the same record ID.

If you have more than one file requiring unique record IDs, the `next record
ID' file can have multiple records, keyed by file name.

--
Paul

> What would be the best way to assign unique record Id's in a multi user
> environment? Since, we have about ten users who add records to same file
> almost at same time. Chances are high that more than one user try to add a
> record at same time. The file should only have unique record Id's.
>
> Our users access this file through a client server application
> (power builder). The client server application calls a stored procedure
> written in SQLRPGLE to add the records to file.


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