11.2.0.3 DB - How To Determine Fetch Size Of Application
Feb 18, 2013
The db is 11.2.0.3 on a linux machine.I would like to know the "fetch size" of an application, but I was not able to find any related meteris in v$statname.
The application configruation is invisible to me.Do I need to do some calculations based on statistic metrics from v$statname?
If so, what meteris should be considered for the assumption for "fetch size" ?
The following is from manual, but the application configuration is invisible to me.
[URL]
Setting the Fetch Size
The following methods are available in all Statement, PreparedStatement, CallableStatement, and ResultSet objects for setting and getting the fetch size:
•void setFetchSize(int rows) throws SQLException
•int getFetchSize() throws SQLException
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Mar 28, 2012
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Method 1:
actual space = num_rows*avg_row_len
Method 2:
actual space = (Num of rows in a table) * (Avg_row_len) + ((Num of rows in a table) * (Avg_row_len)* 0.3)
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[URL]....
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May 4, 2012
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2.Emp_name
3.From_date
4.To_date
5.Remaining_days
The Emp_Master Table has the following columns,
1.Emp_id
2.Emp_Name
3.Remaining_days
Holiday_master table has the list of holiday dates as "From_Date"
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declare
days number(3);
ex_days emp_master.remaining_days%type;
new_rem_days emp_master.remaining_days%type;
begin
[code]....
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I am using the above code but still it returning 5,I think this
...where to_char(dt,'fmday') not in ('sunday','saturday') minus (select holiday_start from holiday_master))
code is not working.
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Here are my settings for the 1st item: URL....
Here are my settings for the 2nd item: URL....
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Oct 18, 2013
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Sep 12, 2012
I have a table that holds the definition of schedules, a schedule defines when a document should be submitted to a specific party. The schedule definition contains a start date, and end date, a recurrence type (is this submitted one time, or on a recurring schedule) and the frequency at which the document should be submitted. The second table provides a history of the submissions, this stores when it was due and when it was received. At the beginning of the month we pre-populate the submittal table with a list of records that will be due for the month. For instance, on September 1 we look through all of the schedules and determine which ones would have a record due at some point in 9/12 and then create a record in the submittal table.
I am having issues getting the calculated list of submittal records to work properly.
The DDL and DML will be in a follow-up post
Here is the query that I am currently using and fails to work properly.
with schedules as (
-- generate a list of valid permit schedules
select s.schedule_id,s.submittal_frequency_months,s.recurrence_type,
s.first_due_date,s.requires_approval,
round(round(months_between(to_date('09/01/2012','mm/dd/yyyy'),s.first_due_date))/decode(s.submittal_frequency_months,0,1,s.submittal_frequency_months)) recurrence_number
[Code]....
-- create a list of all potential due dates for these schedules
select submittal_id_seq.nextval,schedule_Id,8,requires_approval,
case
when recurrence_type='One Time'
then first_due_date
when recurrence_type='Recurring' and trunc(first_due_date)=to_date('09/01/2012','mm/dd/yyyy')
[Code]....
-- exclude those that already have a submittal record ;
Basically I found all possible records in the schedule table that could have a record due in September, then generate a result for all possible instances and then look at only those whose calculated due date is 09/01/2012. I've determined that the root problem I have right now is this line:
(select level iteration from dual connect by level <= (select max(schedules.recurrence_number) from schedules)) d
Schedule ID 469907 has a start date of 05/15/1992 and a frequency of every 2 months. I calculate what I call the recurrence number, which is the number of times the schedule has happened since its start date to now. I use that to do an add_months calculation from the start date and then eventually compare these calculted start dates with my target month (09/12). In this one records case the calculated recurrence number is 122. So when I generate the connect by level is does 122 records for every schedule, so I end up with duplicate records in the submittal table for many of the schedules. This current query could probably work if I could figure out a way to make the level be schedule ID specific, but I've failed at that thus far.
Aside from the fact that this is returning the wrong results, I am thinking there must be a better more efficient method to determine which records are due for a given month. I was thinking there is probably some cool way to use the model clause here, but I haven't got a grasp on that one yet.
If you run the following insert statement you'll see that it inserts over 2400 records:
insert into submittal (submittal_id,schedule_id,submittal_status_type_id,requires_approval,due_date,created_by,created_date,modified_by,modified_Date)
with schedules as (
-- generate a list of valid permit schedules
select s.schedule_id,s.submittal_frequency_months,s.recurrence_type,
s.first_due_date,s.requires_approval,
[Code]....
-- only submittals whose last due date has not passed, null last date included
and trunc(s.first_due_date,'mm') <= to_date('09/01/2012','mm/dd/yyyy') -- only valid start dates
--and round(round(months_between(to_date('09/01/2012','mm/dd/yyyy'),s.first_due_date))/decode(s.submittal_frequency_months,0,1,s.submittal_frequency_months)) >0
)
-- create a list of all potential due dates for these schedules
select submittal_id_seq.nextval,schedule_Id,8,requires_approval,
case
when recurrence_type='One Time'
then first_due_date
when recurrence_type='Recurring' and trunc(first_due_date)=to_date('09/01/2012','mm/dd/yyyy')
[Code]...
You can see the problem after words:
select schedule_id,count(0)
from submittal
where trunc(due_date,'mm')=to_date('09/01/2012','mm/dd/yyyy')
and submittal_status_type_id=8
having count(0) >1
group by schedule_id;Tony
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