What comands or different ways can I code this it's slow?

Question

select claim_1.acct_nbr,
trim('LOC: '||nvl(osha.level_1,acct_level1.level_1)||' '||
          nvl(osha.level_2,acct_level2.level_2)||' '||
          nvl(osha.level_3,acct_level3.level_3)||' '||
          nvl(osha.level_4,acct_level4.level_4)||' '||
          nvl(osha.level_5,acct_level5.level_5))locations,
claim_1.clm_nbr case_nbr,
(nvl(osha.clmt_lst_name,claim_1.clmt_lst_name)) || ','|| (nvl(osha.clmt_first_name,claim_1.clmt_first_name)) name,
nvl(osha.occup,claim_1.occup)occup,
to_char(nvl(osha.dt_inj,claim_1.dt_inj),'mm/dd/yyyy')dt_inj,
nvl(osha.incident_location,incident.incident_location)incident_location,
nvl(osha.natr_of_inj,claim_1.natr_of_inj)natr_of_inj,
ijpb_desc.tbl_desc,
ijca_desc.tbl_desc,
to_char(claim_1.dt_death,'mm/dd/yyyy')dt_death,
decode(osha.injury_result_code,1,'X')death,
decode(osha.injury_result_code,2,'X')daysaway,
decode(osha.injury_result_code,3,'X')transfer,
decode(osha.injury_result_code,4,'X')other,
nvl(osha.actl_ldys_m1,absence.actl_ldys_m1)actl_ldys_m1,
osha.days_on_job_transfer,
decode(osha.injury_illness_code,1,'X')injury,
decode(osha.injury_illness_code,2,'X')skin,
decode(osha.injury_illness_code,3,'X')resp,
decode(osha.injury_illness_code,4,'X')pois,
decode(osha.injury_illness_code,5,'X')hearing,
decode(osha.injury_illness_code,6,'X')other
from group_security,acct_level1,acct_level2,acct_level3,acct_level4,acct_level5,
claim_1,absence,incident,osha_claim_user_log osha,ijpb_desc,ijca_desc
where
acct_level1.level1_seq_id(+) = claim_1.level1_seq_id_fk
and acct_level2.level2_seq_id(+) = claim_1.level2_seq_id_fk
and acct_level3.level3_seq_id(+) = claim_1.level3_seq_id_fk
and acct_level4.level4_seq_id(+) = claim_1.level4_seq_id_fk
and acct_level5.level5_seq_id(+) = claim_1.level5_seq_id_fk
and nvl(acct_level1.level_1,' ') =
decode(group_security.level1,null,nvl(acct_level1.level_1,' '),
nvl(group_security.level1,' '))
and nvl(acct_level2.level_2,' ') =
decode(group_security.level2,null,nvl(acct_level2.level_2,' '),
nvl(group_security.level2,' '))
and nvl(acct_level3.level_3,' ') =
decode(group_security.level3,null,nvl(acct_level3.level_3,' '),
nvl(group_security.level3,' '))
and nvl(acct_level4.level_4,' ') =
decode(group_security.level4,null,nvl(acct_level4.level_4,' '),
nvl(group_security.level4,' '))
and nvl(acct_level5.level_5,' ') =
decode(group_security.level5,null,nvl(acct_level5.level_5,' '),
nvl(group_security.level5,' '))
and group_security.acct_nbr = claim_1.acct_nbr
and claim_1.clm_seq_id = absence.clm_seq_id_fk(+)
and
(absence.dt_abs = ( select max(a.dt_abs)from absence a where a.clm_seq_id_fk = claim_1.clm_seq_id)
or
(not exists
(select * from absence a
where a.clm_seq_id_fk = claim_1.clm_seq_id)))
and claim_1.inc_seq_id_fk = incident.INC_SEQ_ID
and claim_1.clm_seq_id = osha.CLM_SEQ_ID(+)
and trim(ijpb_desc.tbl_cd) = trim(nvl(osha.part_of_body,claim_1.part_of_body))
and trim(ijca_desc.tbl_cd) = trim(nvl(osha.inj_cause,claim_1.inj_cause))
and claim_1.loi in ('SI','IN')
and nvl(osha.osha_recordable,'Y') = 'Y'
and group_security.group_id = 'DEMO'
and (claim_1.dt_inj between to_date('01/01/2003','MM/DD/YYYY') and to_date('12/31/2003','MM/DD/YYYY'))
this is very slow. The bottom claim_1.loi is where I think it is making it slow but there isn't away of not doing that.
Any idea's??

Answer 1

Justin what does the CBO and RBO stand for? What does it do?
Thanks for the help. We will have to see if we can get a plan together here. Do you feel I will have major problems with Discoverer running on Rule? I think I should be able to do it but it would be better if he changed to Cost.
I'm running into the DBA not wanting to give me tablespace for my materialized views so I have to fight for that. Then he wants to know what size they are going to be and I had so many issues running the estimate size I just didn't have rights. I now have the rights and the code comes back with bytes blank and num blank. I don't know where to go from here with the DBA. I have ran the code on several differnent tables and I get indentifet too long or I get the bytes with no byte count and the num with not number.
The DBA seems to never want to do anything for anyone. I have heard nothing but complaints.
here is what I did and I get nothing I have ran against may tables.. Any suggestions..
Thanks
variable num_rows number
variable num_bytes number
set autoprint on
set serveroutput on
BEGIN
dbms_olap.estimate_summary_size(stmt_id => '1',
select_clause =>
'select acct_nbr from csc.claim_1',
num_rows => :num_rows,
num_bytes => :num_bytes);
END;
PL/SQL procedure successfully completed.
NUM_BYTES
NUM_ROWS