Issue with a lov

Question

Hi,
i have a lov called amt_tag which picks up the value form the record group query(query is based on database tables). when i run this query in sql prompt or with the help of pl/sql editor it gives me the result within seconds.....but when i try to click the LOV(based on this query) in my Forms application......the lov pops up after 7-8 minutes......
my question is has it got something to do with tuning the select clause(if yes, the query should actually take tha same time when it is run independently...which is not the case)?
or the structure of the tablespace also matters?
for the info i'm using: 10g version and forms 6i version.
please help

Answer 1

following is my code.....when run in sql it takes just seconds to retrieve....411 rows retrieved
select distinct amount_tag, description, amount_tag_type
from cstbs_amount_tag
where (acct_entry_defn_allowed = 'Y'
and language_code =:global.sm_lang_code
and module =:parameter.prm_module )
or (amount_tag_type is not null
and acct_entry_defn_allowed = 'Y'
and module=:parameter.prm_module
and ((substr(amount_tag,1,instr(amount_tag,'_',-1)-1)
in (select component from cftms_product_interest where product
in (select product_code from cstms_product where module in ('SD','SS','SP'))))
or (substr(amount_tag,1,instr(amount_tag,'_',-1)-1)
in (select component from cftms_product_charge where product =:parameter.prm_product_code))
or (substr(amount_tag,1,instr(amount_tag,'_',-1)-1)
in (select component from tatms_product_tran_tax where product =:parameter.prm_product_code))
or (substr(amount_tag,1,instr(amount_tag,'_',-1)-1) in (select component from tatms_market_issr_tax))
or (amount_tag in (select component from cftms_product_interest where product
in (select product_code from cstms_product where module in ('SD','SS','SP'))))
or (amount_tag in (select component from cftms_product_charge where product =:parameter.prm_product_code))
or (amount_tag in (select component from tatms_product_tran_tax where product =:parameter.prm_product_code))
or (amount_tag in (select component from tatms_market_issr_tax))))
union
select distinct amount_tag, description, amount_tag_type
from cstbs_amount_tag
where (acct_entry_defn_allowed = 'Y'
and language_code =:global.sm_lang_code
and module =decode(:PARAMETER.PRM_PRODUCT_TYPE,'F','LN','T','LS','D','LS', ''))
or (amount_tag_type is not null and acct_entry_defn_allowed = 'Y'
and module=decode(:PARAMETER.PRM_PRODUCT_TYPE,'F','LN','T','LS','D','LS', '')
and ((substr(amount_tag,1,instr(amount_tag,'_',-1)-1)
in (select component from cftms_product_interest where product
in (select product_code from cstms_product where module in ('SD','SS','SP'))))
or (substr(amount_tag,1,instr(amount_tag,'_',-1)-1)
in (select component from cftms_product_charge where product =:parameter.prm_product_code))
or (substr(amount_tag,1,instr(amount_tag,'_',-1)-1)
in (select component from tatms_product_tran_tax where product =:parameter.prm_product_code))
or (substr(amount_tag,1,instr(amount_tag,'_',-1)-1) in (select component from tatms_market_issr_tax))
or (amount_tag in (select component from cftms_product_interest where product
in (select product_code from cstms_product where module in ('SD','SS','SP'))))
or (amount_tag in (select component from cftms_product_charge where product =:parameter.prm_product_code))
or (amount_tag in (select component from tatms_product_tran_tax where product =:parameter.prm_product_code))
or (amount_tag in (select component from tatms_market_issr_tax)))) order by amount_tag