Oracle.DataAccess

Hi,
My application uses ODP.net to connect to Oracle and can run successfully within Visual Studio 2005 , but if I copied .exe to another folder (outside MS Visual Studio) then I got the error:
Could not load file or assembly 'Oracle.DataAccess, Version=2.102.2.20, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. The system cannot find the file specified.
There are two entries in my references, I pointed to Oracle.DataAccess 2.102.2.20 (the one in ODP.net)
Oracle.DataAccess 10.2.0.100 V1.0.3705 c:\oracle\product\db_1\bin\Oracle.DataAccess.dll
Oracle.DataAccess 2.102.2.20 V2.0.50727 c:\oracle\product\client_1\odp.net
bin\2.x\Oracle.DataAccess.dll
Anyone can help?
Thanks
Liz

Hi,
Oracle's ODP.net is client version specific, so 10.2 Oracle.DataAccess.dll requires the corresponding version of OraOps10(w).dll which comes with Oracle.DataAccess.dll, as well as a 10.2 client.
You can not distribute the 10.x Oracle.DataAccess.dll and expect it to work on a 9.x client.
If you know your users will have SOME version of ODP and Oracle client installed, you'd have to compile your app with the lowest version of ODP (9.2) in order for it to work on all installs.
We didnt have an ODP in 8.x, so that's right out.
Instant client is still an Oracle client, its just in a different form. The 11.1.6.20 odp comes with instant client so you dont need to download it seperately, but as far as getting a better understanding of what it is please see the following:
http://www.oracle.com/technology/tech/oci/instantclient/index.html
Just fyi, System.Data.OracleClient (Microsoft's ODP for Oracle) that comes with the .NET framework is not tied to any particular version of Oracle client, so could be used with any version of client install. It doesnt have as much cool stuff as Oracle's ODP does though.
Hope it helps,
Greg

Similar Messages

Unable to load Oracle.DataAccess

Hi ,
I have created a website project on .net framework 4.0 in Visual Studio 2010 . But I am unable to add reference the Oracle.DataAccess dll. It is continously throwing the error " unable to load assembly Oracle.DataAccess . The system cannot find the file specified. "
But when I tried adding the reference in a web application project , it gets added. But when run the project it is throwing the same error. On the web page the error thrown is this :
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Assembly Load Trace: The following information can be helpful to determine why the assembly 'Oracle.DataAccess' could not be loaded.
=== Pre-bind state information ===
LOG: User =***********
LOG: DisplayName = Oracle.DataAccess
(Partial)
WRN: Partial binding information was supplied for an assembly:
WRN: Assembly Name: Oracle.DataAccess | Domain ID: 2
WRN: A partial bind occurs when only part of the assembly display name is provided.
WRN: This might result in the binder loading an incorrect assembly.
WRN: It is recommended to provide a fully specified textual identity for the assembly,
WRN: that consists of the simple name, version, culture, and public key token.
Stack Trace:
[BadImageFormatException: Could not load file or assembly 'Oracle.DataAccess' or one of its dependencies. An attempt was made to load a program with an incorrect format.]
System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +39
System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection, Boolean suppressSecurityChecks) +132
System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +144
System.Reflection.Assembly.Load(String assemblyString) +28
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +46
Any help on this , please.. I have been trying all sorts of things and nothing seems to workl.

BadImageFormatException occurs when you have a bit mismatch.
1) What is the TargetCPU set to when you compiled?
2) Are you running the app on 32 bit or 64 bit OS?
3) Confirm whether the app is running as 32 bit or 64 bit in the problem environment (open task manager, click the process tab, is there a *32 next to the name?)
4) Did you install 32 bit Oracle client or 64 bit Oracle client?
Cheers,
Greg

Unable to get the Oracle.DataAccess namespace

I'm trying to connect to remote 11g Oracle database using Oracle.DataAccess; working on Visual Studio 2008 installed on Windows XP.
I have downloaded and installed Oracle 11g ODAC and Oracle Developer Tools for Visual Studio 11.1.0.7.20 .
I have also installed OracleXEClient.
I have successfully connected to the database in the Server Explored -> Data connection.
I have successfully connected using the Sql data source. The connection String Provider is providerName="Oracle.DataAccess.Client".
But I cant import - use the Oracle.DataAccess;
using Oracle.DataAccess;
I get this error
Error 1 The type or namespace name 'Oracle' could not be found (are you missing a using directive or an assembly reference?)
How can I solve this problem?
Edited by: Daniel Dimov on Apr 29, 2010 10:26 PM

Hi Ershad,
Check the value of the ORACLE_HOME variable.
Also check other oracle variables.
Please check this link:
/community [original link is broken];jsessionid=8d92200630d63622db0ec9a0476182d4ea3eddad1206.e34Tb34Lb34PbO0Lb3eTahiPc3yNe0?messageID=1104338&#1104338
Regards,
Siddhesh

Parser Error Message: Could not load file or assembly 'Oracle.DataAccess, V

I'm working on a 64 bit windows 7 ultimate system and I can't get the Oracle.DataAccess and Oracle.Web to load on the helloworld web page
See error below. At the very end i have the gacutil output. Also, the same dll's work on a 32 bit windows 7 system. I've also tried to load the beta version of the odac 64 bit
but it it gets a "java stopped working error"
Thanks in advance
WEB PAGE ERRORVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
Server Error in '/test/helloworld' Application.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: Could not load file or assembly 'Oracle.DataAccess, Version=2.112.1.1, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. The system cannot find the file specified.
Source Error:
Line 37:                     <add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 38:                     <add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 39:                     <add assembly="Oracle.DataAccess, Version=2.112.1.1, Culture=neutral, PublicKeyToken=89B483F429C47342"/>
Line 40:                     <add assembly="Oracle.Web, Version=2.112.1.1, Culture=neutral, PublicKeyToken=89B483F429C47342"/></assemblies>
Line 41:           </compilation>
Source File: C:\inetpub\wwwroot\test\helloworld\web.config Line: 39
Assembly Load Trace: The following information can be helpful to determine why the assembly 'Oracle.DataAccess, Version=2.112.1.1, Culture=neutral, PublicKeyToken=89b483f429c47342' could not be loaded.
=== Pre-bind state information ===
LOG: User = IIS APPPOOL\DefaultAppPool
LOG: DisplayName = Oracle.DataAccess, Version=2.112.1.1, Culture=neutral, PublicKeyToken=89b483f429c47342
(Fully-specified)
LOG: Appbase = file:///C:/inetpub/wwwroot/test/helloworld/
LOG: Initial PrivatePath = C:\inetpub\wwwroot\test\helloworld\bin
Calling assembly : (Unknown).
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\inetpub\wwwroot\test\helloworld\web.config
LOG: Using host configuration file: C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Aspnet.config
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v2.0.50727\config\machine.config.
LOG: Post-policy reference: Oracle.DataAccess, Version=2.112.1.1, Culture=neutral, PublicKeyToken=89b483f429c47342
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/Temporary ASP.NET Files/test_helloworld/480589f5/895d06ab/Oracle.DataAccess.DLL.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/Temporary ASP.NET Files/test_helloworld/480589f5/895d06ab/Oracle.DataAccess/Oracle.DataAccess.DLL.
LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/test/helloworld/bin/Oracle.DataAccess.DLL.
LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/test/helloworld/bin/Oracle.DataAccess/Oracle.DataAccess.DLL.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/Temporary ASP.NET Files/test_helloworld/480589f5/895d06ab/Oracle.DataAccess.EXE.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/Temporary ASP.NET Files/test_helloworld/480589f5/895d06ab/Oracle.DataAccess/Oracle.DataAccess.EXE.
LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/test/helloworld/bin/Oracle.DataAccess.EXE.
LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/test/helloworld/bin/Oracle.DataAccess/Oracle.DataAccess.EXE.
Version Information: Microsoft .NET Framework Version:2.0.50727.4927; ASP.NET Version:2.0.50727.4927
gacuil output
VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
C:\Users\Administrator>C:\"Program Files"\"Microsoft SDKs"\Windows\v6.0A\Bin\x64
\gacutil.exe /l Oracle.DataAccess
Microsoft (R) .NET Global Assembly Cache Utility. Version 3.5.21022.8
Copyright (c) Microsoft Corporation. All rights reserved.
The Global Assembly Cache contains the following assemblies:
Oracle.DataAccess, Version=2.112.1.1, Culture=neutral, PublicKeyToken=89b483f4
29c47342, processorArchitecture=x86
Edited by: burk_s on Jun 6, 2010 2:42 PM

Hi Mubarak,
Please firstly make sure you installed SharePoint Foundation 2010 with SP2 in a Windows Server 2012 R2. Since only SP2 slipstream installations are supported on Windows Server 2012 R2
http://blogs.technet.com/b/stefan_gossner/archive/2014/05/03/sharepoint-2010-sp2-and-windows-server-2012-r2.aspx
http://blogs.technet.com/b/stefan_gossner/archive/2013/09/19/slipstream-version-of-sharepoint-foundation-2010-with-sp2-included.aspx
Regards,
Rebecca Tu
TechNet Community Support
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact
[email protected]

Oracle.DataAccess 2.112.1.0 - Connection Pool Problem

Hi,
Oracle.DataAccess 2.112.1.0 is having connection pool problem. The no. of TCP connections to Oracle database keep increasing untill the server's session run out of limit. My application created connections, use them, close them, and dispose them properly. When using previous Oracle.DataAccess 2.111.6.20, the no. of TCP connections do not increase.
My database connection string has "Min Pool Size = 3 and Max Pool Size = 150".
With 2.111.6.20 version, TCP connection stays at 3.
With 2.112.1.0, TCP connection keep increasing for every 5 minutes. I've tried to disable Self Tuning, but still can't prevent the connections from increasing.
Later today, I downloaded Oracle.DataAccess 2.112.1.2 (it comes with ODAC 11.2.0.1.2) and test again, the problem is resolved... no more connection increases... but.... it is only for 32 bit Windows.
Unfortunately, there is no Oracle.DataAccess 2.112.1.2 for 64 bit Windows Server 2008.
May I know how can i resolve this problem on 64bit Window installed with Oracle 11g R2 client, which comes with Oracle.DataAccess 2.112.1.0, which has serious problems...(according to this 11.2 ODP.NET causing test runner failures )
Many thanks for your time and answers!
Edited by: user1502907 on 04-Sep-2010 23:01

Hi,
The only thing that jumps out within your problem description is that connections are being increased every 5 minutes. Are you sure its every 5 minutes and not 3 minutes which is the timing interval used by the Connection Pool facility to perform connection pool maintenance. If this occurs even when the application is idle then you could be running into the following known issue filed against 11.2.0.1.0 and fixed in 11.2.0.1.2.
Bug 9711600 - CONNECTIONS INCREASE BEYOND MAX POOL SIZE EVERY 3 MINUTE
This is specific to using the option CommandBehavior.CloseConnection when calling execute reader. Are you using this option and then also closing the connection in code before the datareader object is closed, if so you may be hitting this bug. You can also generate an ODP trace at level 15 of the behavior and if you see negative pool counts, that is also a diagnostic that points to this bug.
This is fixed in 11.2.0.1.0 Patch 3 or later for x64. If you have support, I recommend you open a service request to verify if this is your issue and if a patch set may help you.
Regards
Jenny B.

Oracle.DataAccess.dll on Windows 7 64 bit

Hi,
I am migrating a .Net 3.5 windows class library from WinXP 32 bit to Win7 64 bit. I use Oracle 11g 64 bit client to connect to database.
my code works in Debug build but not in Release build. here is the error message:
"An attempt was made to load an assembly with an incorrect format:"
I did not complete uninstall by Oracle Deinstall, and re-install it.
Debug build have a waring:
"Assembly generation -- Referenced assembly 'Oracle.DataAccess.dll' targets a different processor."
Release build still the same incorrect format error.
here is more information:
under C:\Windows\assembly
Oracle.DataAccess 2.112.1.0 89b483f429c47342 AMD64
Oracle.Web 2.112.1.0 89b483f429c47342 AMD64
How should I fix it? should I download and install "64-bit Oracle Data Access Components (ODAC)"? What's difference between ODP.net in Oracle client and in ODAC?
Thank you,
Wes
Windows 7 Pro, 64 bit, Visual Studio 2010, Oracle 11g 64 bit client

What do you have /32BIT flag set to in the assembly? Ie, was it compiled with AnyCPU, x86, etc? You can use corflags.exe with the .net sdk to find out.
Prior to VS2010, the default was AnyCPU which meant it ran as 64 bit on 64 bit OS, and 32 bit on 32 bit OS.
As of VS2010, the IDE defaults to x86, which means it runs as 32 bit no matter what.
32 bit apps need 32 bit odp/client. 64 bit apps need 64 bit odp/client.
The error you're getting usually means you have the wrong bits (32/64) of the Oracle client installed.
Assuming you have the wrong client bits installed, you could either
a) make the app run as the other bits by setting/clearing the 32BIT flag (also by using corflags.exe)
b) install the other bits of Oracle client software. a 32 bit home and a 64 bit home play rather nicely together for the most part, but you need to install them into separate homes.
Hope it helps,
Greg

Could not load file or assembly 'Oracle.DataAccess error on server

I have been building a.NET application on my local Machine Windows 7 and have the 32-bit ODT installed on my machine which works nicely with VS 2010.
I placed it on the server and when I open the page that accesses data from Oracle, I get the below error. Both the server and my local computer have the Oracle.DataAccess
dll installed and both have the same public token 89b483f429c47342. I changed the target CPU from Any CPU to x86 and published a Release build of my project to the server.
Why am I getting the below error?
==========================================================================================================
Could not load file or assembly 'Oracle.DataAccess, Version=4.112.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. The system cannot find the file specified.
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.IO.FileNotFoundException: Could not load file or assembly 'Oracle.DataAccess, Version=4.112.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. The system cannot find the file specified.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Assembly Load Trace: The following information can be helpful to determine why the assembly 'Oracle.DataAccess, Version=4.112.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342' could not be loaded.
WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].
Stack Trace:
[FileNotFoundException: Could not load file or assembly 'Oracle.DataAccess, Version=4.112.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. The system cannot find the file specified.]
antac.dashboard.Page_Load(Object sender, EventArgs e) in C:\Users\George\Documents\Visual Studio 2010\Projects\antac\antac\dashboard.aspx.cs:92
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
System.Web.UI.Control.LoadRecursive() +71
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3048
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

This was definitely the right answer, I thought ODAC was already installed on the server, but apparently not. I installed the 64-bit OCAC XCopy version on the server and now it works.

Service Error: File or assembly name Oracle.DataAccess not found

Hi, everyone.
I knew someone had post the similar question before. However, the discussion is not be able to solve my problem. Please give some suggestion.
I got a net1 application use the oracle.dataAccess.dll as reference.
I compiled it on my location machine and updated on the test server.
But the event viewer shows the following error
'Could not load file or assembly' Oracle.DataAccess, Version=1, Version=1.102.2.20, Culture=neutral, PublicKeyToken=89b483f429c47342, or one of its dependenices. the system cannot find the file specified.
Then I checked my application I realize, the oracle.DataAccess.dll I reference on my local machine is version10g. So I remove the reference and add the dll again (correct version 9i that match the testing enviroment). Becuase the testing environment got 9i installed.
p.s I done the permission stuff for the ora92 folder and reboot is before I update the service.
When I start the service again. I still have the same error. So after whole bunch of checking , re-add the reference and recomplie. I am running out of the solution.
Please if anyone can kindly give a hand before I shoot myself. =(
Thanks in advance
null

after long wait and there still no reply or suggestion from any one. Finally, I managed to solve this problem myself.
Check your oracle.dataaccess.dll which you reference in the project and make sure the oracle.dataccess.dll version whould match the one you want to use.

App.config tag oracle.dataaccess.client not recognized on windows 7...

Hi all,
I have an application that is working fine on windows XP. On windows 7, the same application cannot work cause of the tag oracle.dataaccess.client you can see below which is not recognized by the system. As soon as I start the application I get an error
message
Unrecognized configuration section oracle.dataaccess.client. Can someone help please before I get nuts.
<oracle.dataaccess.client>
<settings>
<add name=""EA_SERVICES"."SLI_SECURITY_PKG"."SEC_GROUPS_ADD".RefCursor.OUTPARAM" value="implicitRefCursor bindinfo='mode=Output'"/>
<add name=""EA_SERVICES"."SLI_SECURITY_PKG"."SEC_GROUP_MEMBERS_ADD".RefCursor.OUTPARAM" value="implicitRefCursor bindinfo='mode=Output'"/>
<add name=""EA_SERVICES"."SLI_SECURITY_PKG"."SEC_OBJECTS_ADD".RefCursor.OUTPARAM" value="implicitRefCursor bindinfo='mode=Output'"/>
<add name=""EA_SERVICES"."SLI_SECURITY_PKG"."SEC_RIGHTS_ADD".RefCursor.OUTPARAM" value="implicitRefCursor bindinfo='mode=Output'"/>
<add name=""EA_SERVICES"."SLI_SECURITY_PKG"."SEC_RIGHT_GROUPS_ADD".RefCursor.OUTPARAM" value="implicitRefCursor bindinfo='mode=Output'"/>
<add name=""EA_SERVICES"."SLI_SECURITY_PKG"."SEC_USERS_ADD".RefCursor.OUTPARAM" value="implicitRefCursor bindinfo='mode=Output'"/>
</settings>
</oracle.dataaccess.client>
Sherman Body love

Since this is an oracle section, I think you'll get more help over at the oracle forums.
https://community.oracle.com/community/developer/english/oracle_database/windows_and_.net/oracle_developer_tools_for_visual_studio
I would check the versions of the odp.net (oracle.dataaccess.dll) on both machines. The XP machine probably has the 11g client on it. And the windows 7 machine probably has the 12c client on it.

Oracle.DataAccess.dll not loading in 64 - bit OS

Hi All
I have a console application that needs to be scheduled in task manager. My system is 32-bit operating system and I’m using Oracle.DataAccess.dll in my application to establish connection to the oracle db. The version is 2.112.1.0 and the processor architecture of this dll in C:\Windows\Assembly is x86. In my local m/c this dll works fine with all 3 build and target platforms – x64, x86 or AnyCPU. But when I copy the files to my staging server which is a 64-bit OS I’m getting the following exception. (Note: I’m also having Oracle.DataAccess version 10.2.0.100 which is also x86 available in C:\Windows\Assembly)
System.BadImageFormatException: Could not load file or assembly 'Oracle.DataAccess, Version=2.112.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. An attempt was made to load a program with an incorrect format.
File name: 'Oracle.DataAccess, Version=2.112.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342' at
Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
Running under executable D:\ProjectFolder\MyExecutable.exe
Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
Running under executable D:\ ProjectFolder\MyExecutable.exe
--- A detailed error log follows.
=== Pre-bind state information ===
LOG: User = UserId
LOG: DisplayName = Oracle.DataAccess, Version=2.112.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342
(Fully-specified)
LOG: Appbase = file:///D:/ ProjectFolder/
LOG: Initial PrivatePath = NULL
Calling assembly : MyAssembly, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: D:\ ProjectFolder\MyExecutable.exe.Config
LOG: Using host configuration file:
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Post-policy reference: Oracle.DataAccess, Version=2.112.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342
LOG: Attempting download of new URL file:///D:/ ProjectFolder/ Oracle.DataAccess.DLL.
ERR: Failed to complete setup of assembly (hr = 0x8007000b). Probing terminated.
I have tried to build the application to target AnyCPU / x64 / x86. It fails in all 3 scenarios.
There are other applications in the staging server where Oracle connection can be established. So ODP.Net should be registered in the server. So looks like problem with my console app. Does anyone have any idea what could be the problem?
Thanks & Regards,
Sree

If I'm reading your post correctly, your application is built using ODP.net 2.112.1.0 (an 11gR2 client) and your other system has 10.2.0.100 (a 10g client).
That's your problem. When .net tries to load the assembly, it looks for 2.112.1.0. Policy files that get installed when you install the client would allow it to use a newer version instead (like 2.112.3.0), but not to use an older version. So .net doesn't think you have a compatible Oracle client installed.
You could manually add assembly binding redirects to force it to load 10.2.0.100, but I really don't recommend that given some differences between 10g and 11g (I tried that once and had some weird problems). You could also build the application using 10.2.0.100 instead.
The best fix for this is to install 2.112.1.0 on the other system, or try out the managed client when it's out of beta (which doesn't need to be installed at all).

Issues with different versions of Oracle.DataAccess.dll

I have a .net web service application which references version 10.2.0.100 of Oracle.DataAccess.dll. A client has setup Oracle 10g database on the server, but I think the server has a patch set installed so it appears that the versions of Oracle.DataAccess.dll in my web service and on the database server do not match. When I issue a query via the web service on my local machine using my oracle 10g client, the web method returns the correct data. If I issue the same query using the same .net web service on the clients database server, I get the following error: Oracle.DataAccess.Client.OracleException: ORA-00923: FROM keyword not found where expected. There's nothing wrong with the query syntax, I can run the same query from SQL Plus on the database server and get the correct data. Could it be a compatibility issue between the Oracle.DataAccess.dll referenced in my web service application and the file on the sever. I'm not sure what else to look for, any advice is greatly appreciate, and I can answer any questions if needed.
Thanks,
NA

I would not expect an ORA-923 if your the Oracle client was not installed properly. I would expect an exception or a crash.
You can run an ODP.NET trace to find out what query is getting the ORA-923 by doing the following:
1) Shutdown web server on the machine that runs the webservice (middle tier),
2) In windows registry, on the machine that runs the webservice (middle tier), change registry value \\HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\ODP.NET\4.112.1.1\TraceLevel to 1
3) Reproduce the ORA-923 only
4) shutdown webserver
5) Undo the registry value (set it back to 0)
6) In the generated file (c:\odpnet2.0.trc) do a search for "923", hopefully you can find it. Just before that error, you should see the SQL that was executed. This will obviously not be what you expect and will hopefully point you to the cause of the problem.

Could not load file or assembly 'Oracle.DataAccess, Version=2.102.2.20, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. The system cannot find the file specified

Server Error in '/' Application.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: Could not load file or assembly 'Oracle.DataAccess, Version=2.102.2.20, Culture=neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. The system cannot find the file specified.
Source Error:
Line 31: <compilation debug="true">
Line 32: <assemblies>
Line 33: <add assembly="Oracle.DataAccess, Version=2.102.2.20, Culture=neutral, PublicKeyToken=89B483F429C47342" />
Line 34: <add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
Line 35: <add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
Source File: D:\AverySignatureBinders\httpsdocs\ASBNet\web.config Line: 33
Assembly Load Trace: The following information can be helpful to determine why the assembly 'Oracle.DataAccess, Version=2.102.2.20, Culture=neutral, PublicKeyToken=89b483f429c47342' could not be loaded.
WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

For Adapter Pack 2013 the following Oracle Client(s) are needed:
Supported client versions: Oracle Data Access Components for Oracle Client 12.1, Oracle Data Access Components for Oracle Client 11.2.0.1
And please bear in mind that both the 32- and 64 bit versions are needed.
Morten la Cour

Oracle.Dataaccess.dll deploy windows application

I have a windows application that I developed in VS 2005 on XP. It access the DB via the oracle data provider. I just switched to vista and was adding some new items ot the application and then tried to redeploy it. I had to add a new installer to the project and whne i try to run the applciation on the client machine after it installs i get an unhandled exception. After remote debugging i get the following error. {"The type initializer for 'Oracle.DataAccess.Client.OracleConnection' threw an exception."}. I notice that the client on a previous install of the application uses 10.2.0.100 and the new client uses 2.102.2.20. Is this my problem?

The following steps can fix the """'OraOps10.dll': Access is denied.""" some times..
Solution Description:
Follow these steps to restore default access to Read and Execute access for Windows authenticated users:
1. Log on to Windows with administrator privileges.
2. Launch Windows Explorer from the Start Menu.
3. Navigate to the ORACLE_HOME directory and right click on the ORACLE_HOME folder icon.
4. Select the "Properties" option from the drop down list. A "Properties" window should appear.
5. Click on the "Security" tab on the "Properties" window.
6. Click on Autheticated Users in the "Name" list.
7. Uncheck the "Read and Execute" box in the "Permissions" list. This box will be under the "Allow" column.
8. Check the "Read and Execute" box. This is the box you just unchecked.
9. Click the "Apply" button.
10. Click the "OK" button.
Thanks
Vishnu Vardhan Reddy Singireddy
[email protected]

Error: Cannot find the assembly Oracle.DataAccess

Hi, I've this problem when any program use a connection with Oracle provider over any server (2 distinct server access to Oracle 9i with forms applications).
The specific error is:
Cannot find the assembly Oracle.DataAccess, Version=1.102.2.20, Culture=neutral, PublicKeyToken=89b483f429c47342.
This problem is resolve (temporary) executing:
Alter Procedure <<Any procedure valid name>> compile
But this is not an elegant solution.
Please, ODP save something else in memory than executing this sentence clear an resolve this situation ??
Exists any solution for this problem ??
Thank for advance..
Claudio

This sounds odd - I don't see how compiling an Oracle procedure would help .NET to locate an assembly - you're not trying to run an assembly inside Oracle are you?
Tell is more about what you're trying to do. If this is just a common program that is running on a server and trying to connect to Oracle, it sounds like ODP is not installed on the computer that is running this code. You should see Oracle.DataAccess in the GAC.
Eric

Cannot find the assembly Oracle.DataAccess

Ok,
We have a dataset generation class that runs remotely as a windows service in VB.NET.
On some machine, when they have connected and are running a query, they get an exception thrown
Cannot find the assembly Oracle.DataAccess, Version=9.2.0.20, Culture=neutral, PublicKeyToken=89b483f429c47342
Now everybody is hitting the same server, using the same installation of ODP.NET. It's in the GAC and installed fine.
Any ideas why we might be getting this?

Add to that some users are now also getting Data provider internal error(-3001) errors ???

I can't find namespace oracle.dataaccess.lite.dll

Dear All,
I'm developing application on mobile6.0 by using VB .Net, but I couldn't import namespce oracle.dataaccess.lite.dll.
Where I can downoad it ?Please suggetst
Thank you very much.
Meatee.

Do you have access to Oracle Lite server or at least to the OL server installation files? When you run Oracle Lite server installation, you're prompted about the components of OL you'd like to install. One of the components is MDK (Mobile Development Kit - for WindowsCE in your case) which contains the assembly you need...
You can also download the OL server installation files from here: http://www.oracle.com/technology/software/products/lite/htdocs/10gwinsoft.html
btw what do you mean by "I've loaded Oracle lite 10g already"??

Oracle.DataAccess

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