Oracle 12c to 11g - sql

Question

I designed a windows form application that connects to oracle 12c server.
Everything was great until I discovered that the client has a 32 bit operating system, and oracle c can only be installed on 64 bit operating systems.
I have been trying for a week to adapt my application to work with oracle 11g since this version can be installed in my client's computer, and it is becoming a hopeless task.
ODBC for oracle 11g does not have Oracle.ManagedDataAccess.dll included, and also Oracle.DataAccess cannot read Boolean datatypes from the stored procedures that I am using.
I either have to modify all my procedures, and try to fix all the issues related to Oracle.ManagedDataAccess.dll or start by developing a new application using oracle 11g.
I installed windows 7 32-bit on a virtual machine and had been working on it, started by a very small version of my application, and it I working, but requiring too much time !
Is there a faster way or solution to make my application compatible with oracle 11g ?
Is really oracle 11g more suitable for weak and limited computer than oracle 12c ? (In case I managed to convince the client to install a 64bit operating system and re-install all the programs he is using) : Client has 2GB of RAM
Update :
I installed the packed as instructed, and the application is now running. The only problem is that I am having an error when adding a parameter of type Boolean, the error is : 'Oracle.DataAccess.Client.OracleDbType' does not contain a definition for Boolean
this is the code I am using to call the procedure :
tring constr = "DATA SOURCE=localhost;PASSWORD=kidzclubadministration;PERSIST SECURITY INFO=True;USER ID=C##KidzClub";
OracleConnection con = new OracleConnection(constr);
OracleCommand cmd = new OracleCommand();
cmd.Connection = con;
con.Open();
cmd.CommandText = "get_admin_pass";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("pass", OracleDbType.NVarchar2);
cmd.Parameters["pass"].Direction = ParameterDirection.Input;
cmd.Parameters["pass"].Value = password;
cmd.Parameters.Add("done", OracleDbType.Boolean);
cmd.Parameters["done"].Direction = ParameterDirection.Output;
cmd.ExecuteNonQuery();
the exact error sentence is :
Error 2 'Oracle.DataAccess.Client.OracleDbType' does not contain a definition for 'Boolean' C:\Users\Jad-HP\Desktop\Windows Application\WindowsFormsApplication1\WindowsFormsApplication1\Form5.cs 44 53 WindowsFormsApplication1
I went to OracleDbType definition, and could not find a definition for Boolean :
#region Assembly Oracle.DataAccess.dll, v2.111.7.20
// C:\app\Jad-HP\product\11.1.0\client_2\ODP.NET\bin\2.x\Oracle.DataAccess.dll
#endregion
using System;
namespace Oracle.DataAccess.Client
{
public enum OracleDbType
{
BFile = 101,
Blob = 102,
Byte = 103,
Char = 104,
Clob = 105,
Date = 106,
Decimal = 107,
Double = 108,
Long = 109,
LongRaw = 110,
Int16 = 111,
Int32 = 112,
Int64 = 113,
IntervalDS = 114,
IntervalYM = 115,
NClob = 116,
NChar = 117,
NVarchar2 = 119,
Raw = 120,
RefCursor = 121,
Single = 122,
TimeStamp = 123,
TimeStampLTZ = 124,
TimeStampTZ = 125,
Varchar2 = 126,
XmlType = 127,
Array = 128,
Object = 129,
Ref = 130,
BinaryDouble = 132,
BinaryFloat = 133,
}
}
Although when going to that same definition in Visual studio where I am developing with oracle 12c, I have a definition for Boolean :
#region Assembly Oracle.DataAccess.dll, v4.121.1.0
// D:\app\Jad-HP\product\12.1.0\client_2\ODP.NET\bin\4\Oracle.DataAccess.dll
#endregion
using System;
namespace Oracle.DataAccess.Client
{
public enum OracleDbType
{
BFile = 101,
Blob = 102,
Byte = 103,
Char = 104,
Clob = 105,
Date = 106,
Decimal = 107,
Double = 108,
Long = 109,
LongRaw = 110,
Int16 = 111,
Int32 = 112,
Int64 = 113,
IntervalDS = 114,
IntervalYM = 115,
NClob = 116,
NChar = 117,
NVarchar2 = 119,
Raw = 120,
RefCursor = 121,
Single = 122,
TimeStamp = 123,
TimeStampLTZ = 124,
TimeStampTZ = 125,
Varchar2 = 126,
XmlType = 127,
Array = 128,
Object = 129,
Ref = 130,
BinaryDouble = 132,
BinaryFloat = 133,
Boolean = 134,
}
}
Is there a solution other then modifying all the procedures and replacing all Boolean variables ?

Answer 1

You can use the Oracle Managed Data Access DLL to talk to an 11g database. I have an application in production doing that right now.
I can't say I've yet installed an Oracle 12c database, nor even a 12c Oracle client, so I can't say whether either requires a 32-bit client. I got the Oracle Managed Data Access DLL from NuGet, and I avoid the need for an Oracle client by using a connect descriptor rather than a TNS name in the connection string. I don't see why you can't use this approach with your app.