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SQL Server(SNC) and Multiple Plans
  1. New
  2. How-to
  3.  SQL Server
0 Votes
  1. Panos Platanas
  2. PowerBuilder
  3. Monday, 16 June 2025 04:00 PM UTC

Hi!

We have a big number of queries that have Multiple Plans inside Sql Server.

We are using PowerBuilder 2017 (while we migrate slowly to PB 2025) and SNC driver.

I got the TOP 100 out of them and they are all SELECT clauses from datawindows of our application (got those directly from SQL Server query cache tables)

e.g

SELECT  billing_analysis.dummy_id ,           billing_analysis.bill_id ,           billing_analysis.date_from ,           billing_analysis.date_to ,           billing_analysis.exception_flag ,           billing_analysis.department_id     FROM billing_analysis      WHERE ( billing_analysis.bill_id = 2601746 )   

I thought it may be this strange whitespaces that Powerbuilder for some reason produces but I found queries without those whitespaces (probably manualy written ones)

eg

SELECT guest_notes.dummy_id, guest_notes.guest_id, guest_notes.guest_notes, ISNULL(guest_notes.merged_guest_id, 0) merged_guest_id FROM guest_notes WHERE guest_notes.guest_id = 6160096

What could I check, investigate or change?

Thank you

-----------------------------------------------------------------------------------------------

EDIT: As John stated below the post is indeed quite vague. Let me rephrase it please:

I am puzzled because we have a simple SNC connection

StaticBind=0,TrimSpaces=1,RecheckRows=1,Identity=SCOPE_IDENTITY() and AutoCommit = TRUE

and we are experiencing LOTS of Multiple Plans inside the SQL Serever cache from simple SELECT queries of the Datawindows.

I was wondering if anyone had such experience and whether they used any methods to eliminate it.

Meanwhile I am going to do a DBCC FREEPROCCACHE in my DEV machine, set PowerBuilder app to SET ANSI_NULLS ON; SET ARITHABORT ON; and try to monitor whether it makes any change.

If it does, I will report back.

Thank you

 

 

 

 

 

My application terminates when using the importdatawindow fu... Missing accessibility with windows screen magnifier in PB25
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