V$SQL table elapsed time
From the 11.2 Database Reference documentation:


  Elapsed time (in microseconds) used by this cursor for parsing,
  executing, and fetching


Here is a demonstration:

SQL&gt; SELECT sql_text, elapsed_time FROM v$sql WHERE sql_text like '%lewap %';

SQL_TEXT
-----------------------------------------------------------------------------
ELAPSED_TIME
------------
SELECT sql_text, elapsed_time FROM v$sql WHERE sql_text like '%lewap %'
        5112


SQL&gt; SELECT sql_text, elapsed_time FROM v$sql WHERE sql_text like '%lewap %';

SQL_TEXT
-----------------------------------------------------------------------------
ELAPSED_TIME
------------
SELECT sql_text, elapsed_time FROM v$sql WHERE sql_text like '%lewap %'
       26332


SQL&gt; SELECT sql_text, elapsed_time FROM v$sql WHERE sql_text like '%lewap %';

SQL_TEXT
-----------------------------------------------------------------------------
ELAPSED_TIME
------------
SELECT sql_text, elapsed_time FROM v$sql WHERE sql_text like '%lewap %'
       65886


SQL&gt; SELECT sql_text, elapsed_time FROM v$sql WHERE sql_text like '%lewap %';

SQL_TEXT
-----------------------------------------------------------------------------
ELAPSED_TIME
------------
SELECT sql_text, elapsed_time FROM v$sql WHERE sql_text like '%lewap %'
      103225


If you need the timing for one execution you could set timing on in an SQL*Plus session, turn on tracing with TIMED_STATISTICS, or add a comment to the SQL so that there is only one execution in v$sql.