Cached tables...

Question

Hi everybody,
I use Oracle 10g v2 database on XP platform. In order to make some tests , i want to cache 4 tables whose rows and row lengths -querying the num_rows,avg_row_len from user_tables - are as follows:
Table A:
NUM_ROWS AVG_ROW_LEN NUM_ROWS*AVG_ROW_LEN
97 36 3492
Table B:
NUM_ROWS AVG_ROW_LEN NUM_ROWS*AVG_ROW_LEN
233 40 9320
Table C:
NUM_ROWS AVG_ROW_LEN NUM_ROWS*AVG_ROW_LEN
1 70 70
Table D:
NUM_ROWS AVG_ROW_LEN NUM_ROWS*AVG_ROW_LEN
6 23 138
So totally , i need at least-estimated average memory space- 13020bytes in the KEEP buffer pool ,in order to keep the above tables cached.
So , should i set the DB_KEEP_CACHE_SIZE init parameter to 15Kb..???
The Oracle Doc points out about the range of its value...
"Minimum: 0 (values greater than zero are automatically modified to be either the user-specified-size rounded up to granule size or 4MB * number of CPUs * granule size, whichever is greater)"
My computer has 2-CPU.
Something else...
By default , the initial value is 0. By setting a value other than 0 , is it get influenced any other type of memory pool(shared pool,db buffer cache) size??? or it simply the value i set is added to the total SGA memory????
Thanks ,for your interest...
Simon

Answer 1

if you are not using multi block size tablespaces which these tables you will alter to keep pool setting DB_KEEP_CACHE_SIZE = "total blocks" will do, in order to check the efficiency of your new pool you can view the statistics from the advisor.