Datawindow SaveAs locking mode

Resolved Datawindow SaveAs locking mode

Issue

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yakov werde
PowerBuilder
Thursday, 17 May 2018 13:36 PM UTC

Hello All,

Regarding .SaveAs :: The datawindow engine handles opening, writing and closing the file. I have yet to find any documentation about fileaccess & filemode

I would “guess” fileaccess is Write-only and filemode is lock-write. But I’m not sure.

Anyone have a clear answer

Data

Responses (1)

Chris Pollach @Appeon Accepted Answer Pending Moderation

Thursday, 17 May 2018 14:07 PM UTC
PowerBuilder
# 1

Hi Yakov;

My guess would be file: Write, Lock, Exclusive.

Is there an issue from your perspective for your Apps?

Regards ... Chris

Comment

yakov werde
Thursday, 17 May 2018 14:16 PM UTC

Thanks Chris

Multi-User /Multi-Process file contention is an issue. That's why I'm looking for a definitive answer before conducting an experiment or implementing a unique file naming scheme. Unlike the saying "My guess is as good as yours

Helpful 0

Chris Pollach @Appeon
Thursday, 17 May 2018 14:49 PM UTC

Yes, when I do these type of things in my web service framework, I use the IIS session number appended to the file name to get a unique system name so that no contention issues arise.

I'll check with Engineering for you though on this aspect.

Helpful 0

yakov werde
Thursday, 17 May 2018 15:09 PM UTC

Thank you Sir!

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