--查看sid
SQL> show parameter instance_name  ;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
instance_name                        string      tos
--创建pfile
SQL> create pfile='/tmp/tospfile' from spfile;
File created.
--创建spfile in asm
SQL> create spfile='+data' from pfile='/tmp/tospfile';
File created.
--查看spfile name in asm
ASMCMD> pwd
+data/tos/parameterfile
ASMCMD> ls
spfile.282.754913039
--编辑pfile内容（如果有该文件，先删除/重命名）
[oracle@localhost ~]$ vi  $ORACLE_HOME/dbs/inittos.ora
#内容为
spfile='+data/tos/parameterfile/spfile.282.754913039'
--重命名spfile文件
[oracle@localhost dbs]$ mv spfiletos.ora spfiletos.ora_bak
--重启数据库
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
Total System Global Area  167772160 bytes
Fixed Size                  1260672 bytes
Variable Size              75498368 bytes
Database Buffers           83886080 bytes
Redo Buffers                7127040 bytes
Database mounted.
Database opened.
--查看spfile
SQL> show parameter spfile;
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
spfile                               string      +DATA/tos/parameterfile/spfile
                                                 .282.754913039