Read Write to a database in a network

I have a program that reads and writes data to a database it works OK as long the data base is located in the local PC where the program is executing. I wrote the program so I can set up by changing the ini file. In the ini file I indicate the path to the data base also what UDL to use.
I have checked the vi, it opens the connection ok but when it goes thru the loop and goes and executes the SQL it comes out with error
-2147217900 and he vi stops working. I change the ini file back to the original setup and work fine. I forgot to mention that a copy of the Access database is in the local PC and another is in a network drive which the pc has access to. I made a UDL I veryfied that the connection works it come back test OK. I am using the database connectivity VIs. I amusing LabView 10.
Solved!
Go to Solution.

The Access driver does not support networked access, as it is entirely file based. For real network access to the database you would need to use something more professional like Oracle, MySQL, SQL Server or similar. Those databases are server based and get accessed through various network protocols.
The only thing that will likely work is to map the remote directory where your Access mdb file is located into a local drive and access it in that way.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

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How to read/write from Access database

Hi everybody
I need a little help for doing what I wrote in the topic!
I use LabVIEW 6i student edition, do Ireally need to install the Database
connectivity toolkit?

Hi Vicio,
There are a couple of different methods to communicate with Access in LabVIEW, and some are more difficult than others. You can use ActiveX Automation to open Microsoft Access and control many aspects of the Access Application. For actual database manipulation however, the Access automation classes rely upon the Microsoft DAO (Data Access Object) and/or ADO (ActiveX Data Object) classes. These classes can be used independently or through the Access automation classes to read and write data into an Access database. These classes can be difficult to use and may require a fair amount of SQL knowledge to accomplish a complicated task. Attached is a very simple example of how you can use DAO from the Access automation classes to read an Access table.
For more information about the Microsoft Access automation classes, DAO or ADO classes refer to the Microsoft website and Developer Network:
MSDN
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Note: The LabVIEW Database Connectivity Toolset is the preferred method of database communication with LabVIEW. The LabVIEW Database Connectivity Toolset offers many powerful tools and extended capabilites for quickly accessing databases. The LabVIEW Database Connectivity Toolset offers connectivity to most popular databases through Microsoft ADO technology, complete SQL Functionality, and the ability to save records in XML format. It provides both easy-to-use and advanced functions to allow common database operations as well as detailed database accessibility. The LabVIEW Database Connectivity Toolset is sold separately or in the LabVIEW Enterprise Connectivity Toolset along with the LabVIEW Statistical Process Toolkit and the LabVIEW Internet Developers Toolkit.
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Attachments:
Access_ActiveX.vi ‏43 KB

Read/write access to database

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Message was edited by: max bianchi

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Read Write to a database in a network

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