Ora-01506 no database name

Question

11.2.0.2.0 windows 2008 RAC
restored a prod rac to a dev rac, need to rename. created a pfile with my db name to my old name, started single instance, ran nid, updated the controlfiles successfully, stopped the database, updated my pfile to have DB_NAME to my new name, started the database, all good.
Create the spfile on ASM to I can restart my RAC, restart the database (still in single instance on 1 node) , I can see in the alert log its reading the newly created spfile, but I then get an error.
start my database with pfile with db_name=DPRD
SQL>  startup force mount pfile='e:\temp\pfiledprd.ora';
ORACLE instance started.
Total System Global Area 1.3696E+10 bytes
Fixed Size                  2266208 bytes
Variable Size            7147096992 bytes
Database Buffers         6509559808 bytes
Redo Buffers               36966400 bytes
Database mounted.
SQL> show parameter db_name
NAME                                 TYPE        VALUE
db_name                              string      DPRD
SQL>-- create my spfile, edit a second pfile and jsut have a reference to the spfile in it (if I dont use pfile reference it uses OIRACLE_HOME\database\initDPRD1.ora anyway which is the same file, this way I know for sure its using what I want to. Same thing happens either way.
SQL> create spfile='+DATA/DPRD/spfileDPRD.ora' from pfile;
File created.
SQL> startup force mount pfile='e:\temp\initDPRD1.ora';
ORA-01506: missing or illegal database name
SQL> host more e:\temp\initDPRD1.ora
SPFILE='+DATA/DPRD/spfileDPRD.ora'
SQL>so question is why isnt my spfile using DB_NAME that I know exists before I create the spfile.
I verified its using the right spfile by deleting before creating it on ASMCMD. ie, I delete it, run the "create spfile..." and then I see it recreating.

Answer 1

every days a school day. In this case Im in detention. Hours I spent at this and of course I get the answer 20 minutes after I post the question here.
the pfile in the default ORACLE_HOME\database has reference to my spfile
If I run a create spfile from pfile it uses the contents of that pfile, NOT the pfile I started the database with. To use that pfile I need to path the pfile I started it with
WRONG
create spfile='+DATA/DPRD/spfileDPRD.ora' from pfile;
RIGHT
create spfile='+DATA/DPRD/spfileDPRD.ora' from pfile='e:\temp\pfileDPRD.ora';
SQL> create spfile='+DATA/DPRD/spfileDPRD.ora' from pfile='e:\temp\pfileDPRD.ora';
File created.
SQL> shutdown immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SQL> startup pfile='e:\temp\initDPRD1.ora';
ORACLE instance started.
Total System Global Area 1.3696E+10 bytes
Fixed Size                  2266208 bytes
Variable Size            7147096992 bytes
Database Buffers         6509559808 bytes
Redo Buffers               36966400 bytes
Database mounted.
Database opened.
SQL>
SQL>
SQL>