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Oracle: DBMS_UTILITY.GET_CPU_TIME

dbms_utility.get_cpu_time returns the current CPU time as 100th's of a second from some arbitrary epoch.
Count the number of records for which a connect by clause requires approximately 9 to 10 centiseconds of CPU time: 
with s as (
   select /*+ materialize */
      dbms_utility.get_cpu_time tart
   from
      dual
)
select count(*) from (
   select
      null
   from
      s connect by s.tart + 10 > dbms_utility.get_cpu_time
);

See also

Compare with dbms_utility.get_time
dbms_utility

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