Will Result Cache improve the database performance in 11g? what is the max size of Result Cache?

Will Result Cache improve the database performance in 11g? what is the max size of Result Cache?

Thanks for convincing me I really need a new laptop...
SQL> select /*+ result_cache */ count(*) from emp,emp,emp,emp,emp,emp,emp;
  COUNT(*)
105413504
Elapsed: 00:00:52.94
SQL> select /*+ result_cache */ count(*) from emp,emp,emp,emp,emp,emp,emp;
  COUNT(*)
105413504
Elapsed: 00:00:00.01
SQL> select /*+ result_cache */ count(*) from emp,emp,emp,emp,emp,emp,emp;
  COUNT(*)
105413504
Elapsed: 00:00:00.01
SQL> select count(*) from emp,emp,emp,emp,emp,emp,emp;
  COUNT(*)
105413504
Elapsed: 00:00:45.08
SQL> select count(*) from emp,emp,emp,emp,emp,emp,emp;
  COUNT(*)
105413504
Elapsed: 00:01:16.29
SQL>  select count(*) from emp,emp,emp,emp,emp,emp,emp;
  COUNT(*)
105413504
Elapsed: 00:01:18.63
Message was edited by: Hoek
The result cache seems to have lagged a bit for the first hintless query..

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