How to find number of commit or rollback in Oracle Database?

Below query will show you to get number of commit or rollback in oracle database in 10 sec.

SQL> select name,value from v$sysstat where name in ('user commits','user rollbacks');
SQL> exec dbms_lock.sleep(10); // it is 10 sec.
SQL> select name,value from v$sysstat where name in ('user commits','user rollbacks');