Query executing multiple times

Question

All,
This question has been come up quite often in the OTN forum and i have not managed to get the answer. The issue is when i enable the logs i can see query getting fired multiple times :
<TracingViewObjectSqlQueryExecution> <logQueryStatementAndBindParameters> ----[Exec query for VO=Kpi, RS=<Default>]----
<TracingViewObjectSqlQueryExecution> <logQueryStatementAndBindParameters> ----[Exec COUNT query for VO=Kpi]----
<TracingViewObjectSqlQueryExecution> <logQueryStatementAndBindParameters> VODef =com.xxx.model.uiView.KpiVO
<TracingViewObjectSqlQueryExecution> <logQueryStatementAndBindParameters> SELECT
kpi.kpi,
kpi.kpi_desc,
kpi.target,
kpi_pkg.get_kpi_main (kpi.kpi, kpi.sale_type, :bSelectedSalesExecutiveId, :bSelectedBranchId ,:bOperatingUnitId, :bUserRole, :bPersonId, :bKpiRefresh) achieved,
kpi.percentage,
kpi.sale_type
FROM    tableName kpi   
WHERE  kpi.sale_type = NVL (:bSaleType, kpi.sale_type)
ORDER BY tag
<TracingViewObjectSqlQueryExecution> <logQueryStatementAndBindParameters> BindVars:(bUserRole=SE,bOperatingUnitId=81,bPersonId=31458,bSaleType=RETAIL,bSelectedBranchId=224,bSelectedSalesExecutiveId=31458,bKpiRefresh=Y)
<TracingViewObjectSqlQueryExecution> <getQueryHitCount> ***** Query Hit Count = 6 *****
<TracingViewObjectSqlQueryExecution> <logQueryStatementAndBindParameters> VODef =com.xxx.model.uiView.KpiVO
<TracingViewObjectSqlQueryExecution> <logQueryStatementAndBindParameters> SELECT
kpi.kpi,
kpi.kpi_desc,
kpi.target,
kpi_pkg.get_kpi_main (kpi.kpi, kpi.sale_type, :bSelectedSalesExecutiveId, :bSelectedBranchId ,:bOperatingUnitId, :bUserRole, :bPersonId, :bKpiRefresh) achieved,
kpi.percentage,
kpi.sale_type
FROM    tableName kpi   
WHERE  kpi.sale_type = NVL (:bSaleType, kpi.sale_type)
ORDER BY tag
<TracingViewObjectSqlQueryExecution> <logQueryStatementAndBindParameters> BindVars:(bUserRole=SE,bOperatingUnitId=81,bPersonId=31458,bSaleType=RETAIL,bSelectedBranchId=224,bSelectedSalesExecutiveId=31458,bKpiRefresh=Y)This is one such case. These repetitive nature of the queries getting executed is making my application slow. On the logs i can see the first time query getting executed then waiting for it to finish then the same for the second time. Can any one give some inputs on this ?
thnks
Jdev 11.1.1.5

Answer 1

thnks Frank for your reply.
Ideally this query is supposed to run when the page is loaded however it has a complex calculation which takes 28 secs to complete. In order to load the page fast we dragged and dropped the collection as a table and added a button which executes the query. So the query gets executed on page load with a condition set as false so that no data is fetched - to speed the page load. However when we press the Refresh button the query gets re executed but as you can see 2 times. I can see the same effect on a nos of tables.