Storage Indexes does not work

Question

Hi,
I set kcfisstorageidx_disabled to FALSE and use different variations of conditions on the first column in a table.
=, >, is null
SmartScan is used, but storage indexes is not used.
How can I check that Storage Indexes is globally enabled? I have read only access to exadata.
Edited by: 793769 on 25.03.2011 6:24

Answer 1

Hi all,
I have the same problem.
I do not know version of cellsrv, Oracle 11.2.0.2.
Stat 244 is not populated.
I use some query
select count(*) from t where n (char column) = 'Z',
query works 5 sec and returns 0 rows.
select count(*) from t where n (char column) IS NULL,
query works 1.5 sec and return 0 rows.
SmartScan used in both cases. Physical reads bytes the same in both cases.
but stat 244 = 0
I suggest Storage Indexes have been used, but how can I check that this happens except stat 244?
It there some indirect evidence?
I found that statistic "file io wait time" in the second case (is null) less than in the first case (='Z').