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Resolved PB2019R3 MSOLEDBSQL and MARS

  1. How-to
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  1. Jim Gunzelman
    Jim Gunzelman
  2. PowerBuilder
  3. Wednesday, 18 November 2020 19:34 PM UTC

We downloaded PB2019R3 and converted our PB12 application.  We switched the db driver to msoledbsql to connect to our Sql Server 2016 database.  My activity monitor shows 2 connections with the same session ID leading me to believe the multiple active result sets is turned on.  Is this turned on by default?  SHould I leave it turned on?  If it should be off, how do I do that?  I have tried different connection string options to no avail.

 

Thanks

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Accepted Answer
Ken Guo @Appeon
Ken Guo @Appeon Accepted Answer Pending Moderation
  1. Thursday, 19 November 2020 02:44 AM UTC
  2. PowerBuilder
  3. # Permalink

Hi Jim,

The “MSOLEDBSQL” driver PB 2019 R3 newly supported and the "SNC SQL Native Client(OLE DB)" Driver both enable MARS by default.
If you want to turn off MARS, please refer to the method Mike mentioned, for example:

SQLCA.DBParm = "Database='master',ProviderString='MARS Connection=False'"

Regards,
Ken

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Jim Gunzelman
  1. Jim Gunzelman
  2. Thursday, 19 November 2020 13:58 PM UTC


Thanks. That explains how it is on and great example of how to turn off.
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Jim Gunzelman
Jim Gunzelman Accepted Answer Pending Moderation
  1. Wednesday, 18 November 2020 20:09 PM UTC
  2. PowerBuilder
  3. # 1

This is the PB code we are using with bogus names

 

SQLCA.UserID = "uid"
SQLCA.LogID = "lid"
SQLCA.LogPass = "lpd"
SQLCA.Lock = "RC"
SQLCA.AutoCommit = False
SQLCA.ServerName = "myserver"
SQLCA.DBMS = "MSOLEDBSQL SQL Server"
SQLCA.DBParm = "Database='mydb',TrimSpaces=1,AppName='SIMS',Host='myhost',TimeOut=15,TrustServerCertificate=yes,DateFormat=''\''dd-mm-yyyy\'''',DateTimeFormat=''\''dd-mm-yyyy hh:mm:ss.fff\'''',TimeFormat=''\'hh:mm:ss.fff\'''',PBCatalogOwner='dbo',DelimitIdentifier='No'"

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mike S
mike S Accepted Answer Pending Moderation
  1. Wednesday, 18 November 2020 19:47 PM UTC
  2. PowerBuilder
  3. # 2

post your connection string if you want help rather than guesses

 

You should be able to simply set: MARS Connection=false

https://www.connectionstrings.com/ole-db-driver-for-sql-server/enable-mars/

 

also, what do you have for:

OLE DB Services

 

 

 

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