oracle 管理眼账号误删除$ORACLE_HOME/dbs下的参数文件和密码文件后如何快速重建？

[oracle@11g dbs]$ pwd

/home/oracle/app/oracle/product/11.2.0/dbhome_1/dbs

[oracle@11g dbs]$ ll

total 24

-rw-rw—-. 1 oracle oinstall 1544 Mar 11 13:46 hc_orcl.dat

-rw-r–r–. 1 oracle oinstall 2851 May 15 2009 init.ora

-rw-r—–. 1 oracle oinstall 658 Feb 16 05:17 initorcl.ora

-rw-r—–. 1 oracle oinstall 24 Feb 16 05:17 lkORCL

-rw-r—–. 1 oracle oinstall 1536 Feb 16 05:17 orapworcl

-rw-r—–. 1 oracle oinstall 3584 Mar 11 14:19 spfileorcl.ora

[oracle@11g dbs]$ rm -roracle账号f *

total 0

[oracle@11g dbs]$ orapwd file=/home/oracle/app/oracle/product/11.2.0/dbhome_1/dbs/orapworcl password=oracle

SQL> create pfile from memory;

File created.

[oracle@11g dbs]$ ll

-rw-rw—-. 1 oracle oinstall 1544 Mar 11 16:55 hc_orcl.dat

-rw-r–r–. 1 oracle oinstall 5562 Mar 11 16:44 initorcl.ora

-rw-r—–. 1 oracle oinstall 24 Mar 11 16:55 lkORCL

-rw-r—–. 1 oracle oinstall 1536 Mar 11 16:38 orapworcl

SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> startup;

ORACLE instance started.

Total System Global Area 835104768 bytes

Fixed Size 2217952 bytes

Variable Size 520095776 bytes

Database Buffers 310378496 bytes

Redo Buffers 2412544 bytes

Database mounted.

Database opened.