Display How Long to Run a Query

Sometimes, we want to measure how long it takes to run a query. In sqlplus, this can be done by command "set timing on". The time elapsed for runing a query will be displayed after "set timing on".

SQL> set timing on;
SQL> select count(1) from PLANET;

  COUNT(1)
----------
         9

Elapsed: 00:00:00.03
SQL> select count(1) from user_objects;

  COUNT(1)
----------
      1099

Elapsed: 00:00:00.09
SQL>