spfile in 9i, 10g and 11g

There is a quite a difference in how your ouput shows up in 9i, 10g and 11g when you do a "show parameter spfile", here is how it shows up if the instance was brought up using an spfile.

Oracle 9i

SQL> sho parameter spfile

NAME                       TYPE        VALUE
-------------------------- ----------- ------------------------------
spfile                     string      ?/dbs/spfile@.ora

Oracle 10g

SQL> sho parameter spfile
NAME                       TYPE        VALUE
-------------------------- ----------- ------------------------------
spfile                     string      /oracle/product/10.2.0/dbs/spfile10G.ora
                                                
Oracle 11g

SQL> sho parameter spfile

NAME                       TYPE        VALUE
-------------------------- ----------- ------------------------------
spfile                     string      /oracle/product/11.1.0/dbs/spfile11G.ora
                                                

The output in 9i does not show the full ORACLE_HOME location, neither does it display the spfile name while in 10g and above the full ORACLE_HOME location gets displayed along with the spfile name.