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we use Microsoft Dynamics NAV 2009 R2, Version DE Dynamics NAV 5.0 SP1 (6.00.32964) (non SQL)
We have about 20 configured ODBC Connection to different clients (companies).
We use the Microsoft Dynamics NAV ODBC Driver in Version 6.0.32964.00 (Windows 7 32bit and 64bit)
It's not possible that one application starts 2 or more connection at the same time - only one connection could be established.
But it's possible to connect at the same time from different applications to different ODBC connections.
Is this a limitation from the ODBC driver, a licensing problem or something else?
Standard ODBC driver allows multiple connections but no multiple statements per connection:
Multiple Active Statements per Connection
After SQL Server has received a statement, the SQL Server TDS protocol does not allow acceptance of any other statements from that connection until one of the following occurs:
The client application processes the entire result set.
The client sends a statement telling the server it can close the remainder of the result set.
This means that when an ODBC application is using a default result set, SQL Server does not support multiple active statement handles on a connection handle and only one statement can be actively processed at any point in time.
When an ODBC application is using API server cursors, however, the driver can support multiple active statements on a connection. When the rowset for each cursor command has been received back at the client, SQL Server considers the statement to have completed, and it accepts another statement from another statement handle over that connection handle.
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