Select query hangs on Oracle 9i but works fine in Oracle 8i

Question

Hi Guys,
For a recap of what happened:
Migrated from Oracle 8i to 9i for a customer, all queries and statements are working fine, except for this particular query. If i run the same query on 8i it works like a charm.
In 9i, if i remove even one field from the query, it works else it just hangs.
Any idea, any one???
**Added 2:09PM: When i removed some ltrim and rtrim that i believe not necessary, the query works fine, is there any field length limitation in Oracle 9i???
Below is the query:
set pagesize 100;
set linesize 1024;
set heading off;
set echo off;
spool scb_xfer_hdr_npsx;
select ltrim(rtrim(to_char(hdr_srl_no,'99'))) || ';' ||
'P' || ';' || rtrim(ltrim(payment_type))|| ';'|| ';' ||
ltrim(rtrim(our_ref_no))|| ';'|| 'MY;KUL;' ||
     rtrim(ltrim(debit_account_no))||';'||
rtrim(ltrim(to_char(scb_batch_date,'YYYY/MM/DD'))) || ';'|| ';' ||
rtrim(ltrim(payee_name_1))|| ';'|| ';' ||
rtrim(ltrim(address_1))|| ';'||
rtrim(ltrim(address_2))|| ';'||
rtrim(ltrim(address_3))|| ';'|| ';' ||
rtrim(ltrim(payee_name_11))|| ';' ||
rtrim(ltrim(address_11))|| ';'||
rtrim(ltrim(address_21))|| ';'||
rtrim(ltrim(address_31))|| ';'|| ';' ||
     rtrim(ltrim(payee_bank_code)) || ';' || ';' ||
     rtrim(ltrim(payee_account_no)) || ';' ||
     rtrim(ltrim(our_ref_no2)) || ';' || ';' ||
     rtrim(ltrim(our_ref_no2)) || ';' || ';' || ';' || ';' ||
rtrim(ltrim(payment_currency))|| ';'||
rtrim(ltrim(to_char(payment_amount,'9999999999.99')))|| ';'||
     'C;P;;' || rtrim(ltrim(payee_bank_name))|| ';' ||
     'KL;;' ||
     rtrim(ltrim(delivery_method)) || ';' ||
     rtrim(ltrim(delivery_by)) || ';' ||
     rtrim(ltrim(counter_pickup_location))
from scb_xfer_hdr_npsx
order by hdr_srl_no;
select distinct 'T;' || ltrim(rtrim(to_char(total_payments))) || ';' ||
     ltrim(rtrim(to_char(total_pay_amount,'9999999999.99')))
from scb_xfer_hdr_npsx;
spool off;
spool scb_xfer_dtl_npsx;
select ltrim(rtrim(to_char(srl_no,'99'))) || ';' || 'I' || ';' ||
     ltrim(rtrim(doc_no)) || ';' || ltrim(rtrim(to_char(doc_date,'yyyy/mm/dd'))) || ';' ||
     ltrim(rtrim(doc_description)) || ';' ||
     ltrim(rtrim(to_char(doc_amount,'9999999999.99')))
from scb_xfer_dtl_npsx
order by srl_no;
spool off;
set echo on;
exit;
Message was edited by:
Logesh

Answer 1

Hi,
are you still on a 32bit kernel on AIX?
How are the Form4.5 connected, are they on the same box, or are they using the forms GUI?
What about the statistics, how do you collect them? Is the database set to the COST based optimizer?
Do you use dbms_utility.analyze_schema, or this:
exec dbms_stats.gather_schema_stats( -
ownname => '$OWNER', -
estimate_percent => 10, -
granularity => 'ALL', -
method_opt => 'FOR ALL COLUMNS SIZE 75', -
degree => NULL , -
options => 'GATHER $GATH', -
cascade => TRUE -
What does it mean the SQL hangs? Can you cancel the query? Do you have to kill the session? Do you use any diagnostic tools like TOAD to trace the session, see what it is doing? Usually if this is a performance/tuning issue, you will see the session is not dead, but you will see advancing reads.
Regards,
Richard.