[oracle@node1 ~]$ time sqlplus / as sysdba<<THEEND
> startup;
> quit;
> THEEND

SQL*Plus: Release 11.2.0.2.0 Production on Sat May 18 02:17:53 2013

Copyright (c) 1982, 2010, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> ORACLE instance started.

Total System Global Area 1653518336 bytes
Fixed Size                  2227032 bytes
Variable Size            1191183528 bytes
Database Buffers          452984832 bytes
Redo Buffers                7122944 bytes
Database mounted.
Database opened.
SQL> Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

real    0m10.290s
user    0m0.015s
sys     0m0.022s
[oracle@node1 ~]$

[oracle@node1 ~]$ time sqlplus / as sysdba <<THEEND
> shutdown;
> quit;
> THEEND

SQL*Plus: Release 11.2.0.2.0 Production on Sat May 18 02:19:04 2013

Copyright (c) 1982, 2010, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

real    0m7.987s
user    0m0.017s
sys     0m0.013s
[oracle@node1 ~]$


[oracle@node1 ~]$ time dbstart $ORACLE_HOME
Processing Database instance "PHIL112": log file /u01/app/oracle/product/11.2.0/dbhome_1/startup.log

real    0m10.391s
user    0m0.083s
sys     0m0.170s
[oracle@node1 ~]$

[oracle@node1 ~]$ time dbshut $ORACLE_HOME
Processing Database instance "PHIL112": log file /u01/app/oracle/product/11.2.0/dbhome_1/shutdown.log

real    0m6.002s
user    0m0.034s
sys     0m0.084s
[oracle@node1 ~]$