Kernel for i686 which uses all 4GB RAM?

I've got i686 (x86) version of Arch installed. How can I make it use all my 4GB RAM? It just sees 3,3GB now. I know it's possible to use more than 4GB on 32-bit with some tweaks etc (I'm using 8GB on RHEL i386 servers at work), but how do I make it so in Arch?
[joffer@armor ~]$ free
total used free shared buffers cached
Mem: 3369468 3244168 125300 0 11812 2955268
-/+ buffers/cache: 277088 3092380
Swap: 4064404 8 4064396

True Ibertus but not apparent from the post.
An added observation is that the added PAE requires ram for addressing so the full 4GB is not accessible, about 3.5GB is useable. Thusly, the added 1GB is actually only a half GB and requires the 64g highmem mod to the kernel..required for every new upgrade.

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aggregate PGA auto target 988563456 bytes
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maximum PGA used for auto workareas 377039872 bytes
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jssaren wrote:
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http://www.crucial.com
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update: 28.04.2012
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Fangzhou CHEN
TechNet Community Support

Improving a simple select query, which uses all rows.

Hi All,
Please excuse me if the question is too silly. Below is my code
SQL> select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE    10.2.0.1.0      Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
Elapsed: 00:00:00.07
SQL> show parameter optim
NAME                                 TYPE        VALUE
object_cache_optimal_size            integer     102400
optimizer_dynamic_sampling           integer     2
optimizer_features_enable            string      10.2.0.1
optimizer_index_caching              integer     0
optimizer_index_cost_adj             integer     100
optimizer_mode                       string      ALL_ROWS
optimizer_secure_view_merging        boolean     TRUE
plsql_optimize_level                 integer     2
SQL> explain plan for select SUM(decode(transaction_type,'D',txn_amount,0)) payments_reversals,
2          SUM(decode(transaction_type,'C',txn_amount,0)) payments,primary_card_no,statement_date
3             from credit_card_pymt_dtls group by primary_card_no,statement_date;
Explained.
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
Plan hash value: 2801218574
| Id | Operation          | Name                  | Rows | Bytes |TempSpc| Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT   |                       | 1912K|    56M|       | 21466   (3)| 00:04:18 |
|   1 | SORT GROUP BY     |                       | 1912K|    56M|   161M| 21466   (3)| 00:04:18 |
|   2 |   TABLE ACCESS FULL| CREDIT_CARD_PYMT_DTLS | 1912K|    56M|       | 4863   (3)| 00:00:59 |
9 rows selected.
SQL> select index_name,index_type
2 from all_indexes
3 where table_name = 'CREDIT_CARD_PYMT_DTLS';
INDEX_NAME                     INDEX_TYPE
INDX_TRANTYPE                  BITMAP
INDX_PCARD                     NORMAL
INDX_PSTATEMENT_DATE           NORMALThe query is using all the records in the CREDIT_CARD_PYMT_DTLS table. Transaction type will be either 'C' or 'D'.
CREDIT_CARD_PYMT_DTLS has 2 million rows and the qury will output 1.5 million rows. Table statisticas are upto date.
The query now is taking almost 5 minutes. Is thaere any way to reduce the time ?
Our DB server has 8 CPUs and 8 GB memory. Is the timing genuine ?
Thanks in Advance.
Edited by: user11115924 on Apr 29, 2009 2:43 AM
All the columns used in the query are already indexed. ( Ofcourse, not only for this query.)

Hi All,
Thanks for the helps provided. Expecting it once more..
My actual query is as below
select     primary_card_no,base_segment_number,atab.previous_balance,current_balance,intrest_amt_due_this_cycle,total_min_amt_due,total_credit_limit,
          total_purchase_this_cycle,total_cash_trns_this_cycle,available_credit_limit,payments,utilization,payment_ratio,payments_reversals,cash_limit,
          available_cash_limit, description
from
       select primary_card_no,DECODE(base_segment_number,NULL,primary_card_no,base_segment_number) base_segment_number,
               SUM(previous_balance) previous_balance,SUM(current_balance) current_balance ,SUM(intrest_amt_due_this_cycle) intrest_amt_due_this_cycle,
               SUM(total_min_amt_due) total_min_amt_due,SUM(total_credit_limit_all) total_credit_limit,
               SUM(total_purchase_this_cycle) total_purchase_this_cycle,SUM(total_cash_trns_this_cycle) total_cash_trns_this_cycle,
               SUM(available_credit_limit) available_credit_limit,SUM(payments) payments,
               (SUM(NVL(current_balance,0)) / SUM(total_credit_limit_all)) * 100 utilization,
               (SUM(NVL(payments,0)) / DECODE(SUM(previous_balance),0,NULL,SUM(previous_balance))) * 100 payment_ratio,
               SUM(payments_reversals) payments_reversals,SUM(cash_limit) cash_limit,SUM(available_cash_limit) available_cash_limit
      from
        ( select a.*,NVL(payments_reversals,0)payments_reversals ,NVL(payments,0) payments
          from
                ( select primary_card_no,previous_balance,current_balance,intrest_amt_due_this_cycle,total_min_amt_due,total_purchase_this_cycle,
                          total_cash_trns_this_cycle,statement_date,available_credit_limit,cash_limit,available_cash_limit,
                       (case when statement_date <= TO_DATE('301108','ddmmyy') then NULLIF(total_credit_limit,0)
                                  else NULLIF((select credit_limit
                                            from ccm_dbf_chtxn_v0 t1
                                               where t1.batch_id = '011208'
                                               and SUBSTR(t1.card_number,4) = a.primary_card_no),0)
                         end) total_credit_limit_all
                 from
                    ( select primary_card_no,previous_balance,current_balance,INTREST_AMT_DUE_THIS_CYCLE,
                                TOTAL_MIN_AMT_DUE,TOTAL_PURCHASE_THIS_CYCLE,TOTAL_CASH_TRNS_THIS_CYCLE,statement_date,
                               AVAILABLE_CREDIT_LIMIT,cash_limit,available_cash_limit,total_credit_limit
                      from credit_card_master_all@FGBAPPL_LINK
                    ) a
                 where statement_date between ADD_MONTHS(TRUNC(SYSDATE,'mm'),-6) and TRUNC(SYSDATE,'mm')-1
             ) a,
             ( select SUM(decode(transaction_type,'D',txn_amount,0)) payments_reversals,
                           SUM(decode(transaction_type,'C',txn_amount,0)) payments,primary_card_no,TO_CHAR(statement_date,'MON-RRRR') sdate
                from credit_card_pymt_dtls
                group by primary_card_no,TO_CHAR(statement_date,'MON-RRRR')
             ) b
         where TO_CHAR(a.statement_date,'MON-RRRR')= b.sdate(+)
           and a.primary_card_no= b.primary_card_no(+)
        ) a,
        ( select SUBSTR(a.card_number,4) card_number,base_segment_number,TO_DATE(account_creation_date,'DDMMYYYY') account_creation_date,
                       a.batch_id, credit_limit credit_limit_current
            from
                   ( select *
                       from ccm_dbf_phtxn_v0
                       where batch_id= (SELECT to_char(MAX(TO_DATE(SUBSTR(BATCH_ID,1,6),'DDMMRR')),'DDMMRR') FROM CCM_MST_V0)
                    ) a,
                    ( select *
                      from ccm_dbf_chtxn_v0
                      where batch_id=(SELECT to_char(MAX(TO_DATE(SUBSTR(BATCH_ID,1,6),'DDMMRR')),'DDMMRR') FROM CCM_MST_V0)
                    ) b
            where a.card_number=b.card_number
            and TO_NUMBER(ROUND(MONTHS_BETWEEN(SYSDATE,TO_DATE(account_creation_date,'DDMMYYYY')),2)) >=6
            and a.company ='BNK'
        ) b
   where a.primary_card_no = b.card_number
   group by primary_card_no,base_segment_number) atab, card_summary_param btab
where utilization between utilization_low and utilization_high
and payment_ratio between payment_ratio_low and payment_ratio_high
and SIGN(atab.previous_balance) =btab.previous_balanceWhere I have to put the PARALLEL hint for maximum performance?
Sorry for asking blindly without doing any R&D. Time is not permitting that...
Edited by: user11115924 on Apr 29, 2009 5:09 AM
Sorry for the kiddy aliases.. Query is not written by me..

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Kernel for i686 which uses all 4GB RAM?

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