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The provider is not compatible with the version of Oracle client

Posted By:      Posted Date: September 07, 2010    Points: 0   Category :ASP.Net
 
I am having the error stated above. The stack trace is as follows: [OracleException: The provider is not compatible with the version of Oracle client] Oracle.DataAccess.Client.OracleInit.Initialize() +550 Oracle.DataAccess.Client.OracleConnection..cctor() +518 [TypeInitializationException: The type initializer for 'Oracle.DataAccess.Client.OracleConnection' threw an exception.] Oracle.DataAccess.Client.OracleConnection..ctor() +51 InputForm.SelectRegion() +123 InputForm.Initialize() +952 InputForm.Page_Load(Object sender, EventArgs e) +53 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   Some info's: Server: Windows Server 2008 R2 .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1 Oracle.DataAccess, Version=1.102.3.0 Dev Computer: Windows Vista Business 32bit .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1 Oracle.DataAccess, Version=1.102.3.0 My Code: OracleConnection cn;String con1 = ConfigurationManager.ConnectionStrings["myConnectionString"].ToString();cn = new OracleConnection();cn.ConnectionString = con1;cn.Open(); string mysql = "select region_code, 'Region ' || reg_


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The provider is not compatible with the version of Oracle client

  

We are getting following error message while trying to execute sql package thru 'ExecuteNonQuery' our .NET code.

This was working perfectly few days back, but suddenly VS2008 on our local is not able to execute the code.

We are not sure what had exactly happened here, but code stopped working  on all develop machine all of sudden 

 

Details for the error are as follows

"The provider is not compatible with the version of Oracle client" or sometimes "Typeinitializer exception"

We were using oracle.dataacess.dll version 1.102.3.0 which was working fine.It still works fine when we deploy it in the production.

We checked the GAC of the developer machines and Server,i found one difference that in the GAC of the server only the 1.102.3.0 is installed while on the developer machines,two version of oracle.client are installed in the GAC,one is 1.102.3.0 and the other is 1.102.4.0

When we run the code,it might be the case that .net framework is picking up 1.102.4.0 and that may be the problem,so we tried to include it in our project and that still gave us the same error !.We requested to uninstall 1.102.4.0 from developer machines but client refuses to uninstall that its security fix and can not remove it !

Than we thought to upgrade the version of oracle.dataacess.dll to 2.102.4.0 and code started working

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