Re: stable driver for multithreaded environment (IIS 5.X)

Markus Donath wrote:
>
> Hello,
>
> thank you for the new version (07.03.0205).
> i've tested the version for a few days now with the following results:
>
> 1. The "corrupted data under stress" problem (up to 07.03.0204) is fixed
> 2. Threads are no longer blocked by the "pure virtual function call" error
> message box
>
> But the 07.03.0205-Version introduces new bugs:
>
> 1. When using updateable recordsets in a database call (no matter if allowed
> in the dsn-settings or not), the odbc-driver becomes unusable after a few
> statements, and
> error-statements ("unknown error") are returned by the database driver.
> 2. We use components to cache some data. When i call these components in the
> following manner:
> comp1.init(connectionstring)
> comp2.init(connectionstring)
> the second call fails with the new driver. When i vary the connection-string
> a bit for the second
> call (e.g. by adding something like ";foo=222") , everything works fine.
> This lets me think that there might be a problem with connection pooling.
> Even when connection pooling and updateable cursors are disabled (by
> DSN-Settings), these errors occur.
>
> Note: these components do not share any database related resources.
> For every call made in the entire application a seperate connection is
> opened, a call is beeing made and the connection is closed as soon as
> possible (this is how to make connection pooling work with windows).
>
> All in all, this Version is even less stable then 07.03.0204 although some
> problems were fixed.
>
> @Hiroshi Inoue: Are you interested in the odbc-driver-logs ?

Yes. Please send me the logs.

regards,
Hiroshi Inoue