ORA-00604 & ORA-08177 with entity framework

hello all

i'm beginner in asp.net mvc and entity framework. and i have started following this example in github : https://github.com/abdelkafiahmed/BankManagementSystem

i creatd a new project MVC5 in visual studio 2012 ultimate, all model class (Banque, Client,...etc), and entity framework context class BankDbContext.

i have oracle database 12c version

Since there is not a connection string in web.config on this example, i decided to use entity framework for accessing to oracle database. i downloaded by nuget and installed the oracle.ManagedDataAccess.EntityFramework, oracle.ManagedDataAccess and EntityFramework v6 packages and t alrered the connection string given by thes packages to

<oracle.manageddataaccess.client><version number="*"><dataSources><dataSource alias="ORCL" descriptor="(DESCRIPTION =(ADDRESS =(PROTOCOL = TCP)(HOST = localhost)(PORT =1521))(CONNECT_DATA =(SERVICE_NAME = orcl)))"/></dataSources></version></oracle.manageddataaccess.client><connectionStrings><add name="BankDbContext" providerName="Oracle.ManagedDataAccess.Client" connectionString="User Id=bcdratest;Password=bcdratest;Data Source=ORCL"/></connectionStrings>

after i have created the Initializer class:

namespace BankAccountsManagementSystem.DataAccessLayer{publicclassInitializer:DropCreateDatabaseAlways<BankDbContext>{protectedoverridevoidSeed(BankDbContext context){


            using(var ctx =newBankDbContext()){var  banque =newBanque{Nom="ENIT Bank",ArgentDepose=0.0m,Capital=0.0m,NbreClients=0,NbreComptes=0,NbreCredits=0,SommeCredits=0};

                ctx.Banques.Add(banque);
                ctx.SaveChanges();}}}}

i have started by creating a BanquesController and Banques/Index view when i executed the application, the database is created in first time. after, i created PersonneMoralesController by scaffolding and altered the index Action by the code on this example

here

but when executing the application i get an exception:

ORA-00604: error occurred at recursive SQL level string1

ORA-08177: can't serialize access for this transaction

 and database is not recreated.

i thought that i have got these errors because of the codes in initializer and banque Controller Index Action, two transactions in same Banques table, so i excluded this Initializer Class File.

but even this, the problem persists when the exectioning of application

why and how to fix this?

soon