I have a Qt 4 application that is trying to connect to an MS SQL Server 2008 database using the Qt ODBC driver. The application runs fine when it is running in Windows; however, the target OS for the application is to have it run in GNU/Linux. When the application runs in GNU/Linux I get the following error:
QSqlError(0, "QODBC3: Unable to connect", " [unixODBC][Driver Manager]Data source name not found, and no default driver specified")
Is there something I need to configure on the SQL server or application side to get the connection to work?
I don't really know much about unixODBC, but have a look here:
unixodbc.org/doc/
For connecting to MSSQL, the following might be useful:
http://www.unixodbc.org/doc/FreeTDS.html
or .../FreeTDS2.html
Try to copy the odbc.ini file in ~/.odbc.ini . If not working again, try to copy the same file into /etc/odbc.ini. If this is not working, as these directories are different for different Unix systems, find all files: *odbc*\.ini and see if some of them are empty. If so, replace them with the correct .ini file.
I had the same problem and this solved it. But it's a really stupid solution, so I'm looking for a better one. Hope that helped (:
Related
Situation:
I'm unable to connect to remote machnie via vscode + remote-SSH.
I CAN though connect to that machine using SSH from any shell.
Before the problem when I shut down my machine there was mandatory Windows update...
First error I get in terminal just after "You are connected to: [company-servername]" is:
After this there is never-ending error log whit most errors are similar to:
What I have already tried:
reinstalling Remote-ssh
killing vscode remote-server
making additional space on remote
running without any extensions except remote-ssh
reinstalling vscode
deleting all vscode config files and reinstalling
deleting vscode config files on remote in my home
I'm a bit stuck here, and our foreign 'Support' isn't very supportive...
maybe anyone had similar problem or has any idea?
FYI I managed to fix the problem which was really trivial...
Some facts:
Problem was with REMOTE SERVER not VSCODE
As "tput: no value for $TERM" suggested something 'with terminal'
So what I did was clean my .bashrc to some generic sample. And it worked.
After investigation I figured that in my .bashrc I have
source /somepath/myAliases
which causes the problem. So what in that file was wrong?
In 'myAliases' there was broken alias where I used invalid quotation:
alias name='some commands' #OK
alias name="some commands" #OK
alias name=`some commands` # <-- this caused error shown above.
I hope this explanation may be of some use to any of you.
BR
I have a Xamarin iOS application in VisualStudio 2019 on a Windows 10 PC. I build it on the PC, and when possible then right click the project and choose Show IPA File on Build Server, then on my Mac I upload the file to the app store using Transporter. I am encountering these issues:
Whenever I build, the build says it failed with message "There was an error unzipping the file bin\Ad-Hoc\MyApp.app.dSYM.zip: Could not find a part of the path 'C:\MyDirectory\MyApp.iOS\bin\Ad-Hoc\MyAppiOS.app.dSYM'." This has not historically caused any issues - we have still been able to upload the IPA to the app store and deploy our app - but I include it in case it's relevant to the other issues.
Sometimes, my build fails saying it "has been disconnected while waiting a post repsonse to topic xvs/Build/.../execute-task/MyApp.iOS/...Codesign" or "Unable to connect to Mac Server with Address='192.111.111.111' and User='My Username'. The build can't continue without a connection". I'm assuming a wifi issue must cause this, though the machines are all right next to one another and next to my router so seems odd. Occasionally when I try to pair to the Mac, I also get the message "Error, Couldn't connect to com. Please try again. An attempt was made to access a socket in a way forbidden by its access permissions." In any case, makes me wonder if there's any way for me to 1) hardwire the Mac to the PC or 2) build directly on the Mac instead of through VS on the PC, even though I write the code on the PC?
During the build, I periodically get an error "/Users/myUser/Library/Caches/Xamarin/mtbs/builds/MyApp.iOS//bin/Ad-Hoc/MyAppiOS.app: errSecInternalComponent MyApp.iOS C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets 2003". If I lock all keychains on the Mac this goes away on the next build, but then it reappears a few builds later.
Once the build finishes with just the .dSym.zip error, most of the time, the "Show IPA File on Build Server" option still does NOT show up (not greyed out - it is not present in the menu at all) when I right click the iOS project. To get around this, I have been copying the file over to the Mac via S3. I'm wondering why the option doesn't show up, and if there's a way to just find the built file on the Mac rather than copying it over from Windows?
I then use Transporter on the Mac to upload the IPA file to the Apple Store. It always is able to read the version information and says the file is Delivered. However, often I then get an email from Apple saying the build failed because "ITMS-90688: This IPA is invalid - While unzipping the IPA we received the error message [ End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. unzip: cannot find zipfile directory in one of MyAppiOS.ipa or MyAppiOS.ipa.zip, and cannot find MyAppiOS.ipa.ZIP, period. ] Verify that the IPA can be unzipped before reattempting your upload.".
In response to that error, I've tried to unzip the IPA file and I find that on the PC it is always unzippable if I change the extension to .zip, and on my Mac, I can always unzip it to see the Payload directory, and the MyAppiOS item inside it can never be opened - I get a popup "You can't open the application 'MyAppiOS' because it is not supported on this type of Mac." - in any case, the files Apple likes and the ones it doesn't look the same to me when I try unzipping.
My only ideas are to try to figure out how to open and build the app on my Mac, to call my router company, and to keep trying and trying, over and over again, until finally one of the builds works... which sometimes literally takes hours.
Many thanks for any help you are able to offer!
I'm trying to run a simple client/server to implement a communication using QSslSocket. I work on Windows (unfortunately) and I use QtCreator for more convenience.
When I try, from the client side, to connect to the server using MyQSslSocket->connectToHostEncrypted(ip, port), I get the following message:
qt.network.ssl: QSslSocket::connectToHostEncrypted: TLS initialization failed
When I print the raised error, I get the following one:
QAbstractSocket::SocketError(20)
In the documentation we can find that this error code corresponds to QAbstractSocket::SslInternalError whose the description is:
"The SSL library being used reported an internal error. This is probably the result of a bad installation or misconfiguration of the library."
After some investigations I found that Qt does not provide OpenSSL by itself so I installed it (the binaries, for both 32 and 64 bits versions to be sure) from here https://slproweb.com/products/Win32OpenSSL.html.
During the installation, the dll was copied to C:\Windows\System32 (for the 64 bits). Then I checked that the PATH environment variable does well contain this folder.
At this point I tried again, but I still had the same problem, as if the OpenSSL installation was still not found.
When I print the output of the following calls (in the main function of my client):
qDebug() << QSslSocket::supportsSsl();
qDebug() << QSslSocket::sslLibraryVersionString();
I get the following outputs:
false""
My question is, how to make QSslSocket::supportsSsl() return true ?
If anyone could teach me what I missed, what I am doing wrong and tell me what I should do to be able to make this SSL connection run properly, I would be very grateful.
Fareanor.
PS: Sorry for the long question but I think it is important to clearly expose the problem and the context to help you to easily understand the problem and give me more relevant answers.
Ok,
Thanks to #AlienPenguin and #Macias advices, it was that my version of OpenSSL was too recent.
Finally I have installed the closest available version of the one used for the Qt build (which does make sense, I should have thought of it) which can be found by running the following call:
qDebug() << QSslSocket::sslLibraryBuildVersionString();
Problem solved.
Thanks again.
I have a program that links against libmysqld. Under linux I am able to execute "LOAD DATA LOCAL INFILE" under Windows the same command make the application to crash. I saw a bug report relating the crash to use of mysql_thread_init(), however calling mysql_thread_init() crash my application under Windows.
Any idea what I am doing wrong?
Thanks.
I was able to trace the problem using mingw.
My application executes under linux load data local infile '/home/cquiros/temp/test.csv'. Under Windows it executes load data local infile 'c:\temp\test.csv' . Because Windows uses \ \t is interpreted as tab . Passing a tab as part of the load data local infile makes libmysqld to crash if the application is built using nmake (Visual C++) no idea why. Using mingw-make libmysqld is able to report the message "File not found".
I replaced all \ to / and now all works fine.
I finally solved my problem:
I had been using a lib of mysql that was not compiled with the same settings as the VS10 project. Doing this solved my issue
This was my issue
I am having some trouble, and i was wondering if anyone could give me a push in the wright direction.
I am trying to connect to a local Mysql database, using c++ in VS 2010.
On phpmyadmin i can see that an attempt to connect is made but doesn't succeed.
When building the application, i get some errors.
The first where char* errors. I solved that by changing from unicode to multi byte.
The most important error, i think, is this one:
warning C4700: uninitialized local variable 'sqlstatementhandle' used.
After the application crashes i get this in visual studio:
Run-Time Check Failure #3 - The variable 'sqlstatementhandle' is being used without being initialized.
In the console i get this:
Connecting to SQL...
Connect() - SQL_ERROR
Message: [Microsoft][ODBC SQL Server Driver]Fout in het dialoogvenster
SQLSTATE: IM008
In the documentation i found that error code 008 refers to:
Dialog failed
SQLDriverConnect
But i don't really now how this can help? Is the driver not able to connect, or is the driver not loaded at all? As I told earlyer, i can see in phpmyadmin that there are failed attempts to connect.
my setup: visual studio 2010 and a mysql server administrated true Xampp. A 64bit windows 7 machine.
In connection string, Driver shows "Sql Server". Perhaps Connection String is problem. Try to change it. This site will help you.
http://www.connectionstrings.com/mysql#p31