Hi,
I ran into a concurrency problem with my Perl / CGI application. It uses a Microsoft Access database for data storage. I noticed that if I run a DELETE query and then a SELECT right after it, I get results that include the deleted records. If I insert sleep(1) command between the two database calls, I get the correct results. It seems to me that this behavior results from the way Access processes/caches query requests.

I am at the point where I think I need to lock the table to which I am doing the updates, but I am not sure how to do it using DBI module. I searched in groups.google.com, DBI documention and here, but couldn't find an answer. I know that Access is probably not a good choice for a multiuser application, but, if it all possible, I want to use Access initially and then switch over to something else (SQL Server or Oracle).

There's a way to lock records using ADO provider for Access, but I want to stick with DBI / ODBC for now. Could anyone give me any hints, comments, or pointers on this?

Thank you,
Alex

In reply to Locking tables in Access database using Perl DBI by relax99

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