ODP standalone

Without Administrative privilege, how would you install ODP.NET?

Note 784309.1 describes the required files if you have no Oracle client

1. download XCOPY ODAC from Oracle .NET, Visual Studio, and VS Code ODAC Downloads for Oracle Database
2. Copy the files Oracle.DataAccess.dll OraOps.dll orannzsbb.dll oraociei.dll oci.dll to your directory (ex: C:\ODAC)
3. Add that directory to your PATH
4. Create your sqlnet.ora and tnsnames.ora or use ezconnect string host:1521/service.example.com

That’s it. It even works with kerberos

sqlnet.ora

sqlnet.kerberos5_conf=C:\ODAC\krb5.conf
sqlnet.kerberos5_cc_name=OSMSFT://
sqlnet.authentication_services=kerberos5pre
sqlnet.kerberos5_conf_mit=true
NAMES.DIRECTORY_PATH = (TNSNAMES)
NAMES.DEFAULT_DOMAIN = example.com

tnsnames.ora

DB01.example.com=(DESCRIPTION=
  (ADDRESS=(PROTOCOL=TCP)(HOST=srv1.example.com)(PORT=1521))
  (CONNECT_DATA=(SERVICE_NAME=DB01.example.com)))

krb5.conf

[libdefaults]
  default_realm = EXAMPLE.COM
[realms]
  EXAMPLE.COM = {
    kdc = dc1.example.com
}
[domain_realm]
.example.com = EXAMPLE.COM
example.com = EXAMPLE.COM

let’s try

cd C:\ODAC
${ENV:PATH}="C:\ODAC"
${ENV:TNS_ADMIN}="C:\ODAC"
[Reflection.Assembly]::LoadFile('C:\ODAC\Oracle.DataAccess.dll')
$conn = New-Object Oracle.DataAccess.Client.OracleConnection(
  'User Id=/;Data Source=DB01')
$conn.open();
$com=$conn.CreateCommand();
$com.CommandText='select * from dual';
$com.ExecuteScalar();
$conn.close();
$conn.dispose()

X

PS: kerberos5pre is deprecated but kerberos5 doesn’t work with credential guard, there are a few unpublished bugs (33825536 and others)