Strange delay in database connections

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• Strange delay on starting an exe with DAQmx

  I see a very strange delay when launching a program that loads a LabVIEW generated DLL that uses DAQmx. I also see the same thing on a LabVIEW EXE and maybe on a loading a LabVIEW VI that calls the DLL LabVIEW. The funniest, it is this delay only occurs when the sensors are connected. In this case, I use two 4462 s with approximately 50 feet of cable with a bit of connections between the two and accels IEPE. I don't see a delay when the sensors directly connected with a few feet of cable, or when the sensors are not connected to the cable.

  I will try to narrow the problem down to a particular card or a detector of tomorrow. The delay lasts 2 minutes and occurs before appears vi loading screen. At the launch of the program in C that loads the dll of LabVIEW on launch, basically I get no feedback, but the process appears in Task Manager. When you load a vi in LabVIEW to a project that calls the dll, I get a cursor busy until the loading screen screw rises. So the question is: what happens before that appears the VI loading screen?

  This is all before my code runs, so I don't see how any configuration software comes into play.

  Any thoughts?

  Chris

  
  

• problem to generate an installation program for a project of database connectivity

  Hello

  I create a project using labview 2011, this project all simply select, edit and insert a file of access database by using the database connectivity Toolkit.

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• Database connectivity Kit

  Hello

  I use the database connectivity toolkit to create a Microsoft access database.  I'm new to the Toolbox.  I've read the tutorials online and following the instructions.  I created an empty Microsoft Access file with an .mdb extension.  I also created a link to data .udl with tools > create data... in LabView and linked to the mdb file.  My code VI is attached.  I get the following error when I run the program (also attached).  I don't know what causes this error.  I appreciate your help.

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  You can not create a table with the name "table".  It is a key word.

• Reading large data using the database connectivity

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  Read it in pieces. Write each piece to the file, and then repeat with the next segment. Try to read and process all data in one shot is not very practical and you found out will not work.

• How to send the SQL for SQL Server statement and return data without using database connectivity Kit?

  Hi, I tried to figure out how to extract data from my SQL Server databases and reading messages and to do some tests with examples, I can get data connection type in my SQL server, but so far nothing helps.  Is it possible to get data from a SQL Server database without using the database connectivity Toolkit?  and if so, how?  are there whitepapers and/or examples of this?  So far, I can't find something that works.  Thank you.

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• Problem installation database connectivity Kit

  My company manufactures in several factories around the world.  I have a problem in China and that you want to debug, and because the code is distributed in the form of exe, it is a problem.  My approach was to install a trial license of 30 days of LV2010 SP1, intend to withdraw when debugging is done.  So far, so good.  The problem is that the application requires the database connectivity Toolkit.  I downloaded a copy and tried to install.  It says it can't install because LV2010 is not installed.  Is it because of the eval license?

  If I wanted to rewrite hundreds of applications running, I could do that, but what I want is to install the DB Toolkit for a bit of troubleshooting.

  If NEITHER would alter the conditions on their license server, I would not have these problems.

• Database connectivity error: ADO...?

  I'm trying to export data in an Oracle database local using the Toolbox Database Connectivity.

  (I created my TEST table in the local Oracle database, I can access, write, read, etc. using SQL.) I also have the .dsn file that works with SQL)

  I get the following error:

  

  I found the problem. Not associated with LabVIEW (Duh...).

  Basically I have two copies of .tns names in two different folders. One of the files that I used to make a connection

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• database connection status indicator

  I want to put something on the front of my program which will indicate the status of database connection. I think to ask at the tables in the list (it should be displayed), if the connection is good, it shows error. I tried and I think it works very well, but I don't know if it's the right way to do it, there may be better ways there, could someone point out he for me?

  Best regards

  You certainly don't want to open and close the connection. Maybe it will fail, but the 'real' connection is good. Maybe the real one has failed but this other works opening and closing. This could happen if the server has the maximum number of connections.

  Your connection is little go far?

  A simple method to check the connection just must have a loop that executes periodically a meaningless statement.

  

• Calling stored procedures with parameters with the database connectivity Toolkit

  Hi all

  I'm new to the forum and struggling to find a solution to a particular problem I have in this respect, using the LabVIEW Database Connectivity Toolkit on a project, I am currently working on my work.  I have a database in which I tables and stored procedures with parameters.  Some of these stored procedures have input, output and return parameters.

  I tried to follow this example, but to no avail: http://digital.ni.com/public.nsf/allkb/07FD130746083E0686257300006326C4?OpenDocument

  Such a stored procedure I am working on the implementation is named "dbo.getAllowablePNs", running "SELECT * from DeviceType" (DeviceType is the table).  In this case, it requires no input parameter, it has an output parameter that generates the table [cluster] and has a return parameter that returns an integer value (status code for execution) to show if an error occurred.  The DeviceType table has 3 columns; ID (PK, int not null), PN (nvarchar ((15), null) and NumMACAddresses (int, null).)  I have surpassed many examples and I talk to the support OR try to implement this and similar procedures stored in LabVIEW but have not been successful.  I am able to connect to the database with the VI of open connection without error, but spin in some confusion as a result of this step.  I then try to use the VI of parameter query create to call the stored procedure and set the parameters.  I guess I would then use the Set parameter value for each parameter that is connected to the entry of parameters on the previous query with parameters VI VI?  I am also having some confusion during and after these steps as well.  I would greatly appreciate advice or suggestions that anyone could have in this situation because I am not a SQL expert.  Also, I would be happy to provide more information that might be useful.

  Kind regards

  Jon

  Here's what I use to do this.  I think I had to change him create parameterized query VI for him to work.  There is a post on the forum about this somewhere.

  

• Database connectivity broken vi Toolkit

  Hi all

  I upgraded from LV 8.5 to 8.6 (windows XP platform) a couple of weeks and have had no problems until today when all of sudden my vi toolkit database is coming from broken, with: "one or more of the inputs needed for this function are not wired or are wired incorrectly. Display the context-sensitive Help window to see what should be the connections to this function. ' Mistakes however is not the case on all my vi using the objects in the Toolbox.

  Measures taken so far without success:

  1 mass compilation of my vi

  2 mass compilation of database Toolbox

  3 re install Database Resource Kit

  4 mass compile the directory vi.lib

  5 in the old knowladge base article Document ID: 2RO7J544, assured the latest microsoft MDAC is installed.

  Any help is appreciated as we use this receptive toolkit.

  Thank you

  Chris

  PLATES

  Hi Chris,

  Thanks for the reply and I hope that your well.

  I need to try to understand something, when you say that the LabVIEW 8.6 upgrade have you improved the Toolbox?

  Toolkit LabVIEW Database Connectivity 1.0.2 is for LabVIEW 8.6. If, on the other hand your trying to use LabVIEW 8.6 with DC Toolkit 1.0.1 so I think that they are not officially compatible. However, these links may be of interest knowledge base: (after all, they are just screws). However, to say this - if you read the Readme for the new toolkit, that many things have changed for LabVIEW 8.6 - so becareful.

  You will have to manually copy all the files in one version of LabVIEW to another. Use the following instructions to achieve:

  1. Install the database connectivity toolset to the version of LabVIEW, say X.
  2. Copy the following files/directories in the directories right in the latest version of LabVIEW, say Y.
     • Copy the data directory from \LabVIEW X\vi.lib\addons\ to \LabVIEW Y\vi.lib\addons\
     • Copy the file database.llb \LabVIEW X\project\ to \LabVIEW Y\project\
     • Copy the data directory from \LabVIEW X\examples\ to \LabVIEW Y\examples\

  OR also check this,

  Installation of toolkits for use with several Versions of LabVIEW:

  http://digital.NI.com/public.nsf/allkb/58BE852CB35237C786256A290079DF39?OpenDocument

  Other questions that you may have encountered,

  Database connectivity tools claims are a polymorphic Subvi Broken

  http://digital.NI.com/public.nsf/allkb/0FA97221637E74CA86256C7C005069A5?OpenDocument

  "Update to the latest MDAC will solve this problem."

  I would also check that you have installed the Toolkit for LabVIEW 8.6 - toolkits are now specific for labVIEW 8.6. Then maybe try to reinstall and the Toolbox for LV8.6.

  Hope this helps and please let me know (Please specify a little more).

• I use windows 7 64-bit edition Home premium and I cannot connect to access database in java program.it shows error database connection driver not installed.

  I am using windows 7 64 bit home premium I installed ms office 2007 and did all the settings.
  but I am unable to connect to the Access database in java program.it shows error database connection driver not installed.
  Please give me the solution...

  Hello

  I suggest you to ask your question about Java programming forums on the subject.

  https://forums.Oracle.com/Forums/Forum.jspa?forumid=922

  You can also ask your question on the forums to access.

  http://answers.Microsoft.com/en-us/Office/forum/access?page=1&tab=all&TM=1349633636662

• Drop database connectable to including the file system data sheets files

  I did experiments with the connectable Oracle12c to database functionality and have noticed that when I "drop database connectable to pdb1 including datafiles', I get the message that the database snap-in has been dropped."  I also see that all files in the tablespace for the PDB except the SYSTEM data file have been deleted.

  
  I want to remove the folder that has been used for the pluggable database after that the PDB fell, but cannot because the file SYSTEM data is left behind.

  Is it possible to delete the data file SYSTEM for a pluggable database once he fell?  Or this part forever from the database of the container?

  Thank you

  This forum works on a Server Windows 2012.

  Thanks for the Bug information.  There is no error in the alert.log file, but I found a trace file with:

  ORA-01265: cannot remove the D:\ETC\ETC\SYSTEM01 DATA. DBF

  ORA-27056: could not delete file

  OSD-04024: cannot delete the file.

  S/O-error: (32 OS) the process cannot access the file because it is being used by another process.

  This seems to be the same problem as described in bug 17659954, so I can follow in investigating the recommendations of bug

  Thanks again