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Resolved PowerServer App starts, connects to DB, retrieves data, then gets "Session fails to respond (Session does not exist)" error

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  1. Jim Reese
    Jim Reese
  2. PowerServer
  3. Thursday, 16 February 2023 19:28 PM UTC

Doing a PS2022 POC for our existing C/S application. Prompting for User info prior to connecting to the DB. Connection is successful, MDI opens and initial sheet opens successfully with retrieved data.

Then a different window (application about window) can be successfully opened 1 or more times, it includes Embedded SQL in the open event. Then on a subsequent attempt to open, it fails on the same Embedded SQL it successfully processed moments before.

I'm getting the "Session Fails to respond (Session does not exist)" error in various places, shortly after the application opens successfully and retrieves data. The PowerServer help says this is normally caused by the Web APIs having been restarted, but I'm running this in IIS on my machine, how would the Web APIs keep being restarted?

Has anyone experienced similar behavior?

  1. PowerServer
SESSION CREATION FAILED POWERSERVER
Publish webapi to run on iis
Responses (2)
Jim Reese
Jim Reese Accepted Answer Pending Moderation
  1. Friday, 17 February 2023 17:31 PM UTC
  2. PowerServer
  3. # 1

Timeout Values:

IIS:

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Francisco Martinez @Appeon
Francisco Martinez @Appeon Accepted Answer Pending Moderation
  1. Thursday, 16 February 2023 19:55 PM UTC
  2. PowerServer
  3. # 2

Hi Jim,

There's a chance that the session is expiring. Please verify your timeout settings. See here for more details.

Regards,
Francisco

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Armeen Mazda @Appeon
  1. Armeen Mazda @Appeon
  2. Wednesday, 22 February 2023 20:36 PM UTC
Hi Jim, If you can open support ticket and submit the problematic code, our product engineers can analyze and see if it is bug or unsupported feature, and if unsupported feature update the docs accordingly: https://docs.appeon.com/ps2022/unsupported_features_guide.html
  1. Helpful
Jim Reese
  1. Jim Reese
  2. Thursday, 23 February 2023 15:57 PM UTC
Armeen, I will try to segregate the code out into a test app and get that submitted. App uses PFC and Powersmith and preferences stored in the db, so lots of dependencies involved to do that.
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Armeen Mazda @Appeon
  1. Armeen Mazda @Appeon
  2. Friday, 24 February 2023 02:53 AM UTC
I see... well if you can that would be great, and if not totally understand. Thanks!
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