Hi everyone,
We have a serious problem when connecting datasource to an oracle database, this problem appears when uninstalling and reinstall Forms ; it is urgent
There is no problem connecting to SQL server.
Laserfiche RIO pack
laserfiche  FORMS version: 10.2.1
LFDS version : 10.0.0.270
LFS version : 10.2

The erors log gives

Details:
URL: /Forms/api/datasource/test
Error: DataSourceConnectionError
Date: 02/02/2019 19:49:43 (Afr. centrale Ouest)
HTTP Status Code: 400
Business Process ID: 0
User: ADMIN
IP: ::1
Browser: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
Business Process Name: 

Stack Trace:
Caught exception: Laserfiche.Forms.CommonUtils.Exceptions.LFFormsException
Message: Une erreur s'est produite pendant le test de connexion de la source de données. Voir le journal des événements Windows pour plus de détails. [LFF2400-DataSourceConnectionError]
   à E_Forms.Controllers.AuthorizationController.TestDatasource(Int32 dbType, String server, String db, String user, String password, Int32 dbId)
   à lambda_method(Closure , ControllerBase , Object[] )
   à System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters)
   à System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)
   à System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__39(IAsyncResult asyncResult, ActionInvocation innerInvokeState)
   à System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult)
   à System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d()
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f()
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f()
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f()
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass33.<BeginInvokeActionMethodWithFilters>b__32(IAsyncResult asyncResult)
   à System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)
   à System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult)
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<>c__DisplayClass2b.<BeginInvokeAction>b__1c()
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)

Inner exception: System.IO.FileNotFoundException
Message: Impossible de charger le fichier ou l'assembly 'Oracle.DataAccess, Version=4.112.3.0, Culture=neutral, PublicKeyToken=89b483f429c47342' ou une de ses dépendances. Le fichier spécifié est introuvable.
   à Laserfiche.Forms.EntityModels.Data.OracleDBConnector..ctor(String server, String uid, String pwd)
   à Laserfiche.Forms.CommonUtils.OdbcConnector..ctor(DataBaseType dbType, String server, String database, String uid, String pwd)
   à Laserfiche.Forms.CommonUtils.OdbcConnector.GetODBCConnection(WindowsImpersonationContext& ctx, IntPtr& tokenPtr, DataBaseType databaseType, String server, String db, String user, String pw)
   à E_Forms.Models.ViewModels.DataSource.TestDatasource(Int32 dbId, Int32 dbType, String server, String db, String user, String password)
   à E_Forms.Controllers.AuthorizationController.TestDatasource(Int32 dbType, String server, String db, String user, String password, Int32 dbId)

Any suggestions?