pfile/spfile contents

Move the existing init file present in $ORACLE_HOME/dbs folder to *.old.

SQL> show parameter spfile;

If it shows the output, then do a "create pfile from spfile" and the pfile will be created from the spfile in the location $ORACLE_HOME/dbs folder. Extract the content of the pfile.

If the output shows pfile, then directly go to $ORACLE_HOME/dbs folder and get the content of the file.