Contents of Pfile are gone???!!!!!

Hi
When i tried starting up the DB using initSID.ora i got the following error:

LRM-00123: invalid character 0 found in the input file
ORA-01078: failure in processing system parameters

and when i checked the pfile i didn't see anything the contents were gone so what could be the problem and how to fix it ?!

Thank you in advance

Do you have a backup of your pfile? If so, just copy it back.

I think this will work,

if you can start ur db with nomount option

select the name and value of v$parameter
where ISDEFAULT = 'FALSE'

edit the output and name it as your new pfile.

create one if you know your db name and block size. Check the location of control files physically and include the path in Pfile.

Rest of the parameters can be adjusted as per your requirements

i had a backup for it but i wanted to know why did it happen is my windows O/S is causing this problem or is it Oracle!!

Thank you guys

oracle cant right to a pfile, all it can do is read it.

You sure someone didnt play with it by accident?