How can I quickly recreate a parameter file and password file in $ ORACLE_HOME/dbs by mistake ?, Oracle_homedbs

How can I quickly recreate a parameter file and password file in $ ORACLE_HOME/dbs by mistake ?, Oracle_homedbs

[Oracle @ 11g dbs] $ pwd

/Home/oracle/app/oracle/product/11.2.0/dbhome_1/dbs

[Oracle @ 11g dbs] $ ll

Total 24

-Rw ----. 1 oracle oinstall 1544 Mar 11 hc_orcl.dat

-Rw-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 orapworcl

-Rw-r -----. 1 oracle oinstall 3584 Mar 11 spfileorcl. ora

[Oracle @ 11g dbs] $ rm-rf *

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 ----. 1 oracle oinstall 1544 Mar 11 hc_orcl.dat

-Rw-r --. 1 oracle oinstall 5562 Mar 11 initorcl. ora

-Rw-r -----. 1 oracle oinstall 24 Mar 11 16: 55 lkORCL

-Rw-r -----. 1 oracle oinstall 1536 Mar 11 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.