Calculating the elapsed time of Oracle Database Startup operation
[oracle@o71 ~]$ time sqlplus -s / as sysdba&lt;&lt;EOF
&gt; startup
&gt; exit
&gt; EOF
ORACLE instance started.

Total System Global Area  536867640 bytes
Fixed Size                  8659768 bytes
Variable Size             322961408 bytes
Database Buffers          197132288 bytes
Redo Buffers                8114176 bytes
Database mounted.
Database opened.

real    0m14.578s
user    0m0.014s
sys     0m0.016s
[oracle@o71 ~]$