Oracle Data Appliance (ODA)

Oracle Database Appliance (ODA) is a rack mounted "all-in-one" box supplied by Oracle. It contains 2 nodes, 2 networks, 2 power supplies and a bunch of storage accessible to both nodes.
It can be virtualised or bare-metal. You can setup single instance databases, RAC-One (active-passive) or RAC (active-active) databases.
A whole new set of commands is used to interact with ODA - oakcli.
For example to create a database on ODA, it's no longer

dbca

it's

oakcli create database -d <database name>

Useful queries

As seen on Pythian

prompt ------------------------------------------
prompt Patches applied to both the $OH and the DB
prompt ------------------------------------------
with a as (select dbms_qopatch.get_opatch_lsinventory patch_output from dual)
select x.patch_id
,      x.patch_uid
,      x.rollbackable
,      s.status
,      x.description
from   a
,      xmltable('InventoryInstance/patches/*'
          passing a.patch_output
          columns
             patch_id number path 'patchID',
             patch_uid number path 'uniquePatchID',
             description varchar2(80) path 'patchDescription',
             rollbackable varchar2(8) path 'rollbackable'
       ) x
,      dba_registry_sqlpatch s
where  x.patch_id = s.patch_id
and    x.patch_uid = s.patch_uid
--       and s.bundle_series = 'PSU'
/

prompt --------------------------------------------------------
prompt Patches installed into the $OH but not applied to the DB
prompt --------------------------------------------------------
with a as (select dbms_qopatch.get_opatch_lsinventory patch_output from dual)
select x.patch_id
,      x.patch_uid
,      x.description
from   a
,      xmltable('InventoryInstance/patches/*'
         passing a.patch_output
         columns
           patch_id number path 'patchID',
           patch_uid number path 'uniquePatchID',
           description varchar2(80) path 'patchDescription'
       ) x
minus
select s.patch_id
,      s.patch_uid
,      s.description
from   dba_registry_sqlpatch s
/

prompt --------------------------------------------------------
prompt Patches applied to the DB but not installed into the $OH
prompt --------------------------------------------------------
with a as (select dbms_qopatch.get_opatch_lsinventory patch_output from dual)
select s.patch_id
,      s.patch_uid
,      s.description
from   dba_registry_sqlpatch s
minus
select x.patch_id
,      x.patch_uid
,      x.description
from   a
,      xmltable('InventoryInstance/patches/*'
          passing a.patch_output
          columns
             patch_id number path 'patchID',
             patch_uid number path 'uniquePatchID',
             description varchar2(80) path 'patchDescription'
       ) x
/