SPFILE
on filesystems
You can find spfile location with show parameter command.
SQL>show parameter spfile;
Spfile generally holds in \u01\app\oracle\product\10.2.0\dbhome_1\dbs\spfileorcl.ora on filesystems.on ASM
SQL>show parameter spfile;
+DATA\orcl\spfileorcl.ora
CONTROLFILE
on filesystem
You can find controlfile location with show parameter command.
SQL>show parameter control_files;
ControlFile generally holds in \u01\app\oracle\product\10.2.0\oradata\orcl\control01.ctl on filesystems.
Oracle has three control file on filesystem.on ASM
SQL>show parameter control_files;
+DATA\orcl\spfileorcl.ora
+FRA\orcl\control