Ok, I am probably just shooting air with this question.. but I have no idea what's happening and I have been banging my head against it for the last couple days.
I have a crystal report version 12.2.0.290... I built this report against an Oracle connection string (not ODBC as it was giving me errors to use a stored procedure as a data source). Anyway, so the report was connecting to the database fine.. and I was able to build the entire report.. refreshing data with every change I made etc.. Once I was finished.. I closed the crystal report. When I open the report again and try to refresh the data I get the error "Unknown Database Connector Error in Crystal Reports". I get this error when I try to run the report straight from crystal reports.. or from the .NET wrapper that we built for this report. I also get the same error when I run the report (in CR) from another machine. In fact I get this error just trying to connect to an any Oracle database from that report..
The really strange thing is that if I open another report that we built a while ago.. I can connect to the same exact data source from it and it I go to File -> Open and open the first report.. I can connect to the Oracle data source and the report runs fine.. I can reproduce this strange behavior at will.. I don't know what is going on.... and I have been staring at this problem for the longest while.. if anyone has any ideas I will be more than happy to try them out...
Thanks!!
This is The Resolution:
https://social.msdn.microsoft.com/Forums/vstudio/en-US/d2811b33-2c2c-43d1-af51-9c54e9ad7920/unknown-database-connector-error?forum=wpf
I've fixed the problem, I just needed those lines:
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
</startup>
If using a stored procedure as your data source, make sure it RETURNS a RESULT SET. Once I added a 'SELECT * FROM dbo.mytable', the error went away. :-)
Are you using the latest Oracle Data Access Components?
How to check which version you are using:
During installation of ODAC, consult the ODAC Installer screen.
After installation, see the history.html file in your ODAC installation directiory.
At design-time, select Oracle | About ODAC from the main menu of your IDE.
At run-time, check the value of the OdacVersion and DACVersion constants.
Note: This was originally a comment but added as an answer after OP response on how to check for the version of ODAC
Related
When I try to browse my project through IIS, I get the below error
"The provider is not compatible with the version of Oracle client"
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: Oracle.DataAccess.Client.OracleException: The provider is not compatible with the version of Oracle client
enter image description here
Please let me know what are the steps that i should perform to resolve this error. Thanks!
Assuming you have Oracle client installed and you have reference to the Oracle.DataAccess.dll in your project, check its version. Go to <your oracle client path>\odp.net folder and find there *.dll file with same name. Compare versions. Most likely issue is that DLL in your dir is different and does not match your installed Oracle Client. Use DLL that matches client.
And tell your boss to stop using Oracle client and use Oracle.ManagedDataAccess.dll
Now, there could be other issues causing this but this is minimum to check before moving further.
In my case I got the same error message when migrating to the newer Oracle.ManagedDataAccess.dll and forgot to remove the existing Oracle.DataAccess.dll, resulting in a lot of ambiguity.
Everything worked once the older reference was removed.
Last time I had this problem in an c# project I had to add Oracle.DataAccess.dll reference from my Oracle client directory.
I am using Oracle SQL V. 4.1.3.
I have installed it successfully, and established connections to our database. I see the db connections, but when expanding them this error message shows up:
Driver Class not found. Verify the Driver location. Vendor Code 0
I installed Ms JDBC driver 6.0 for SQL Server and unpacked it in my ProgramFiles. I then went to ControlPanel-SystemProperties and added the sqljdbc42.jar as <installation directory>\sqljdbc_<version>\<language>\sqljdbc.jar under my existing environment variable called PATH.
Now when I go to SQL Developer Properties, I see JDBC.JAR added to Java.library.path but not to java.class.path. Is this the reason I am still getting error message? How do I go about fixing it? Or is there some other issue at hand?
I also experienced the reported error. It appears one can go to preferences of a connection, click on 'Test' to test the connection and then it suddenly works again... Very strange, but it worked. You do have to do this for all connections, but hey, it worked.
Need to set driver path inside Preference -> Database -> 3rd Party JDBC driver -- in case of mssql add -- jtds-1.3.1.jar.
Nevermind, I was just little stupid. All I had to do was add Third Party JDBC Driver path under Preferences in SQL Developer and it works like a Charm.
i am stuck with a problem regarding Crystal Report 13. I am working on Visual Studio 2013 developing Web Application.
Previously i've developed reports and those were working fine but after some time on web page crystal report viewer stop rendering. I tried to resolve the issue by suggestions on different forums where i need to add reference of Crystal Report 13 files in my Web.Config. After all changes the problem was not resolved. Than people suggested me to re-install redistribution package of crystal report 13, i've done the same thing now there is a new problem which is quite different. Whenever i am trying to open page it shows following error:
Server Error in '/Abcd' Application.
The document has not been opened.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Runtime.InteropServices.COMException: The document has not been opened.
I've tried many forums and different suggestions but all seems useless, i've check the appropriate rights even try after giving full rights but still at same position.
I've found the alternative solution, before i was using 13.0.21 redistribution package which was using registry dlls version 13.0.2000.0, i was facing two problems using that particular version.
1. Unable to edit rpt file, whenever i tried to open it an error appear on screen that The operations is failed or unable to complete operation (something like that i don't know exactly what the error is but the summary is this)
2. When i try to open Crystal report viewer during execution, i've come up with error which i posted earlier.
What i have done for the resolution, that i've download Crystal report developer version 13.0.21 and install it with "Run as Administrator" because i creates some entries in your registry of windows, keep in your mind to close VS during installation. After successful installation both problems are solved but u need to change the dlls version in your code from 13.0.2000.0 to 13.0.3500.0
I'm developing an app in VB6 and added a data report bound to a data environment. I set the report as start up object, but it shows the designer and not the report viewer!
I have built a new project and imported all of the objects back in but to no avail.
I did a test with a small Data Project and it worked.
Has anyone else come across this problem?
Thanks in advance.
Problem allayed due to the fact that SHAPE commands cannot be used with DISCONNECTED recordsets...which defeats what I am trying to achieve here.
I'll use MSAccess reports via OLE server.
Thanks for looking anyway!
When I tried to use an Ajax control toolkit, I get a grey out error and searching around they said installing VS10 Service pack could help to solve the problem. So I did install it and now I got a serious problem:
I can no longer load the website that I can load normally before, it shows this error:
Server Error. 500 - Internal server error.
I tried many ways and finally found this one looks quite close to what happened to me:
http://support.microsoft.com/kb/842329
And I tried what it suggested:
go to C:\Windows\system32\mcfc42.dll-> properties\security\Edit\Add
Added:
Iwam_computername or computername\Iwam_computername
Also added:
Everyone
Allow Full control to all.
Restart server. But still the same problem. Please help me to fix this problem, unfortunately my server did not install backup option before I install VS SP1 so I could not recover to the previous point. Any solution ? If I cannot access it, no way I can code and test my website...
I found the solution for this. At first, to narrow down the problem I load the website at server side (not at client side) then I see this error lines in my web.config file, I think when I click at property at project in VS and choose .net 4.0 then back to 3.5 it add some duplicate to my web.config file. I just add all the first lines related to .net 3.5 and keep the xml format correct then it works fine now! Many thanks !!