EF Migraiton错误解决

System.Runtime.Serialization.SerializationException: Type is not resolved for member 'Oracle.ManagedDataAccess.Client.OracleException,Oracle.ManagedDataAccess, Version=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342'.
在 System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
在 System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner)
在 System.Data.Entity.Migrations.Design.ToolingFacade.Update(String targetMigration, Boolean force)
在 System.Data.Entity.Migrations.UpdateDatabaseCommand.<>c__DisplayClass2.<.ctor>b__0()
在 System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)
Type is not resolved for member 'Oracle.ManagedDataAccess.Client.OracleException,Oracle.ManagedDataAccess, Version=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342'.

最终解决方案是把Oracle.ManagedDataAccess.dll拷贝到migrate.exe同一目录。思路来源于：http://www.cnblogs.com/tom6886/p/4920492.html