Time calculation problem
after loading and transforming dates tot the ISO8601 format, i need to extract a start and ending time of a interval.
The time is 02-04-2007T10:30:00Z and is the end of the interval, which function can i use to calculate the beginningtime? Each interval is a period of 5 minutes.
If you were loading the data into a DATE column in the past, I suspect that the time was not "disappeared". You probably just weren't asking it to be displayed when you queried the data.
Oracle stores DATE data in a packed binary format. This is independent of the format of the data that was inserted or the format of the data that is displayed and always contains a date and time component.
When you query that data, the front end application has to convert the date to an appropriate string. If you have particular formatting needs (i.e. ISO 8601), you would normally write a function, i.e. to_iso_8601, that takes a DATE and returns a VARCHAR2 in ISO 8601 format and call that on the display edge. You would store data in the database as a DATE and convert it to a string at the last possible moment before displaying it.
Justin
Similar Messages
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[8i] Date/Time calculation problem...
So, I am currently facing a situation where I need to calculate the total hours a workstation is in use for each day in a particular time period. I have a table with the log of each time each workstation is used. The problem is, a workstation can be used for any amount of time, starting on any day and ending on any day. This means that a particular entry in the log can span multiple days. I'm not sure how to split the difference between the end date/time of an entry and the start date/time of the entry over multiple days.
Here's a sample table and some sample data for what I'm trying to do:
-- Note: in reality, this table contains more columns
CREATE TABLE my_hrs
( record_id NUMBER NOT NULL
, sdatetime DATE
, edatetime DATE
, workstation VARCHAR2(4)
CONSTRAINT my_hrs_pk PRIMARY KEY (record_id)
-- Note: sdatetime, edatetime, and workstation CAN all be NULL, though I won't provide
-- any sample data for these situations since I want to ignore them in my results
-- Additionally, there are hundreds of workstations, but I'm only using 2 to simplify the sample data
INSERT INTO my_hrs
VALUES (12345,TO_DATE('03/01/2010 08:00','mm/dd/yyyy HH24:MI'),TO_DATE('03/01/2010 13:35','mm/dd/yyyy HH24:MI'),'123A');
INSERT INTO my_hrs
VALUES (13427,TO_DATE('03/01/2010 08:10','mm/dd/yyyy HH24:MI'),TO_DATE('03/01/2010 10:02','mm/dd/yyyy HH24:MI'),'321B');
INSERT INTO my_hrs
VALUES (21543,TO_DATE('03/01/2010 14:07','mm/dd/yyyy HH24:MI'),TO_DATE('03/01/2010 16:30','mm/dd/yyyy HH24:MI'),'123A');
INSERT INTO my_hrs
VALUES (22412,TO_DATE('03/01/2010 10:15','mm/dd/yyyy HH24:MI'),TO_DATE('03/01/2010 15:30','mm/dd/yyyy HH24:MI'),'321B');
INSERT INTO my_hrs
VALUES (11976,TO_DATE('03/01/2010 17:00','mm/dd/yyyy HH24:MI'),TO_DATE('03/02/2010 02:30','mm/dd/yyyy HH24:MI'),'123A');
INSERT INTO my_hrs
VALUES (34215,TO_DATE('03/01/2010 22:10','mm/dd/yyyy HH24:MI'),TO_DATE('03/02/2010 04:30','mm/dd/yyyy HH24:MI'),'321B');
INSERT INTO my_hrs
VALUES (24789,TO_DATE('03/02/2010 13:00','mm/dd/yyyy HH24:MI'),TO_DATE('03/05/2010 02:30','mm/dd/yyyy HH24:MI'),'123A');
INSERT INTO my_hrs
VALUES (31542,TO_DATE('03/02/2010 21:30','mm/dd/yyyy HH24:MI'),TO_DATE('03/04/2010 10:30','mm/dd/yyyy HH24:MI'),'321B');Based on my sample data above, these are the results I want to see:
WORKSTATION DATE HRS_IN_USE
123A 3/1/2010 14.96667
321B 3/1/2010 8.95000
123A 3/2/2010 13.50000
321B 3/2/2010 7.00000
123A 3/3/2010 24.00000
321B 3/3/2010 24.00000
123A 3/4/2010 24.00000
321B 3/4/2010 10.50000
123A 3/5/2010 2.50000
321B 3/5/2010 0.00000Is this possible? (Please note, if the workstation was not used on a particular day, I want it to show 0 hours for that workstation for that day). Another thing to note is that I'm working with Oracle 8i.
Thanks in advance for the help!Thanks, Frank, your explanation helped. My main problem was just that I couldn't picture what that line of the query was doing, even working from the inside out. I learn better through visual and hands-on methods, so to really understand, I had to look at the cross-join of a and h and go line by line. (In case there's anybody who looks at this post in the future and learns like I do, I've posted that data below).
This definitely solves my problem!
>
By the way, this query is full of things that could be done better in later versions of Oracle. Generating table a is just one of them. Starting in Oracle 9, you can do a CONNECT BY query on dual to generate exacly how many rows you need. You never have to worry about an upper bound, and it's much faster than using ROWNUM. From time to time you might gently remind the people who decide these things that you're using a very old, unsupported version of Oracle, and that everyone could be more productive if you upgraded.
>
I could go on and on on this topic.... we have tried and continue to try to convince the powers that be to pay for the upgrades... if it were just Oracle that needed to be upgraded, we might actually have a chance at succeeding. As it is, ...ha.
TABLE A (FROM SUB-QUERY)
a_date next_date
3/1/2010 3/2/2010
3/2/2010 3/3/2010
3/3/2010 3/4/2010
3/4/2010 3/5/2010
3/5/2010 3/6/2010
TABLE H (MY_HRS)
record_id sdatetime edatetime workstation
10000 2/28/2010 18:00 3/1/2010 5:30 123A
12345 3/1/2010 8:00 3/1/2010 13:35 123A
13427 3/1/2010 8:10 3/1/2010 10:02 321B
21543 3/1/2010 14:07 3/1/2010 16:30 123A
22412 3/1/2010 10:15 3/1/2010 15:30 321B
11976 3/1/2010 17:00 3/2/2010 2:30 123A
34215 3/1/2010 22:10 3/2/2010 4:30 321B
24789 3/2/2010 13:00 3/5/2010 2:30 123A
31542 3/2/2010 21:30 3/4/2010 10:30 321B
CROSS-JOIN TABLE A WITH TABLE H (and calculations done by the query below)
record_id sdatetime edatetime workstation a_date next_date LEAST (h.edatetime, a.next_date) GREATEST (h.sdatetime, a.a_date) GREATEST(TO_NUMBER(L-G),0)
10000 2/28/2010 18:00 3/1/2010 5:30 123A 3/1/2010 3/2/2010 3/1/2010 5:30 3/1/2010 0:00 0.229166667
10000 2/28/2010 18:00 3/1/2010 5:30 123A 3/2/2010 3/3/2010 3/1/2010 5:30 3/2/2010 0:00 0.00000
10000 2/28/2010 18:00 3/1/2010 5:30 123A 3/3/2010 3/4/2010 3/1/2010 5:30 3/3/2010 0:00 0.00000
10000 2/28/2010 18:00 3/1/2010 5:30 123A 3/4/2010 3/5/2010 3/1/2010 5:30 3/4/2010 0:00 0.00000
10000 2/28/2010 18:00 3/1/2010 5:30 123A 3/5/2010 3/6/2010 3/1/2010 5:30 3/5/2010 0:00 0.00000
12345 3/1/2010 8:00 3/1/2010 13:35 123A 3/1/2010 3/2/2010 3/1/2010 13:35 3/1/2010 8:00 0.23264
12345 3/1/2010 8:00 3/1/2010 13:35 123A 3/2/2010 3/3/2010 3/1/2010 13:35 3/2/2010 0:00 0.00000
12345 3/1/2010 8:00 3/1/2010 13:35 123A 3/3/2010 3/4/2010 3/1/2010 13:35 3/3/2010 0:00 0.00000
12345 3/1/2010 8:00 3/1/2010 13:35 123A 3/4/2010 3/5/2010 3/1/2010 13:35 3/4/2010 0:00 0.00000
12345 3/1/2010 8:00 3/1/2010 13:35 123A 3/5/2010 3/6/2010 3/1/2010 13:35 3/5/2010 0:00 0.00000
13427 3/1/2010 8:10 3/1/2010 10:02 321B 3/1/2010 3/2/2010 3/1/2010 10:02 3/1/2010 8:10 0.07778
13427 3/1/2010 8:10 3/1/2010 10:02 321B 3/2/2010 3/3/2010 3/1/2010 10:02 3/2/2010 0:00 0.00000
13427 3/1/2010 8:10 3/1/2010 10:02 321B 3/3/2010 3/4/2010 3/1/2010 10:02 3/3/2010 0:00 0.00000
13427 3/1/2010 8:10 3/1/2010 10:02 321B 3/4/2010 3/5/2010 3/1/2010 10:02 3/4/2010 0:00 0.00000
13427 3/1/2010 8:10 3/1/2010 10:02 321B 3/5/2010 3/6/2010 3/1/2010 10:02 3/5/2010 0:00 0.00000
21543 3/1/2010 14:07 3/1/2010 16:30 123A 3/1/2010 3/2/2010 3/1/2010 16:30 3/1/2010 14:07 0.09931
21543 3/1/2010 14:07 3/1/2010 16:30 123A 3/2/2010 3/3/2010 3/1/2010 16:30 3/2/2010 0:00 0.00000
21543 3/1/2010 14:07 3/1/2010 16:30 123A 3/3/2010 3/4/2010 3/1/2010 16:30 3/3/2010 0:00 0.00000
21543 3/1/2010 14:07 3/1/2010 16:30 123A 3/4/2010 3/5/2010 3/1/2010 16:30 3/4/2010 0:00 0.00000
21543 3/1/2010 14:07 3/1/2010 16:30 123A 3/5/2010 3/6/2010 3/1/2010 16:30 3/5/2010 0:00 0.00000
22412 3/1/2010 10:15 3/1/2010 15:30 321B 3/1/2010 3/2/2010 3/1/2010 15:30 3/1/2010 10:15 0.21875
22412 3/1/2010 10:15 3/1/2010 15:30 321B 3/2/2010 3/3/2010 3/1/2010 15:30 3/2/2010 0:00 0.00000
22412 3/1/2010 10:15 3/1/2010 15:30 321B 3/3/2010 3/4/2010 3/1/2010 15:30 3/3/2010 0:00 0.00000
22412 3/1/2010 10:15 3/1/2010 15:30 321B 3/4/2010 3/5/2010 3/1/2010 15:30 3/4/2010 0:00 0.00000
22412 3/1/2010 10:15 3/1/2010 15:30 321B 3/5/2010 3/6/2010 3/1/2010 15:30 3/5/2010 0:00 0.00000
11976 3/1/2010 17:00 3/2/2010 2:30 123A 3/1/2010 3/2/2010 3/2/2010 0:00 3/1/2010 17:00 0.29167
11976 3/1/2010 17:00 3/2/2010 2:30 123A 3/2/2010 3/3/2010 3/2/2010 2:30 3/2/2010 0:00 0.10417
11976 3/1/2010 17:00 3/2/2010 2:30 123A 3/3/2010 3/4/2010 3/2/2010 2:30 3/3/2010 0:00 0.00000
11976 3/1/2010 17:00 3/2/2010 2:30 123A 3/4/2010 3/5/2010 3/2/2010 2:30 3/4/2010 0:00 0.00000
11976 3/1/2010 17:00 3/2/2010 2:30 123A 3/5/2010 3/6/2010 3/2/2010 2:30 3/5/2010 0:00 0.00000
34215 3/1/2010 22:10 3/2/2010 4:30 321B 3/1/2010 3/2/2010 3/2/2010 0:00 3/1/2010 22:10 0.07639
34215 3/1/2010 22:10 3/2/2010 4:30 321B 3/2/2010 3/3/2010 3/2/2010 4:30 3/2/2010 0:00 0.18750
34215 3/1/2010 22:10 3/2/2010 4:30 321B 3/3/2010 3/4/2010 3/2/2010 4:30 3/3/2010 0:00 0.00000
34215 3/1/2010 22:10 3/2/2010 4:30 321B 3/4/2010 3/5/2010 3/2/2010 4:30 3/4/2010 0:00 0.00000
34215 3/1/2010 22:10 3/2/2010 4:30 321B 3/5/2010 3/6/2010 3/2/2010 4:30 3/5/2010 0:00 0.00000
24789 3/2/2010 13:00 3/5/2010 2:30 123A 3/1/2010 3/2/2010 3/2/2010 0:00 3/2/2010 13:00 0.00000
24789 3/2/2010 13:00 3/5/2010 2:30 123A 3/2/2010 3/3/2010 3/3/2010 0:00 3/2/2010 13:00 0.45833
24789 3/2/2010 13:00 3/5/2010 2:30 123A 3/3/2010 3/4/2010 3/4/2010 0:00 3/3/2010 0:00 1.00000
24789 3/2/2010 13:00 3/5/2010 2:30 123A 3/4/2010 3/5/2010 3/5/2010 0:00 3/4/2010 0:00 1.00000
24789 3/2/2010 13:00 3/5/2010 2:30 123A 3/5/2010 3/6/2010 3/5/2010 2:30 3/5/2010 0:00 0.10417
31542 3/2/2010 21:30 3/4/2010 10:30 321B 3/1/2010 3/2/2010 3/2/2010 0:00 3/2/2010 21:30 0.00000
31542 3/2/2010 21:30 3/4/2010 10:30 321B 3/2/2010 3/3/2010 3/3/2010 0:00 3/2/2010 21:30 0.10417
31542 3/2/2010 21:30 3/4/2010 10:30 321B 3/3/2010 3/4/2010 3/4/2010 0:00 3/3/2010 0:00 1.00000
31542 3/2/2010 21:30 3/4/2010 10:30 321B 3/4/2010 3/5/2010 3/4/2010 10:30 3/4/2010 0:00 0.43750
31542 3/2/2010 21:30 3/4/2010 10:30 321B 3/5/2010 3/6/2010 3/4/2010 10:30 3/5/2010 0:00 0.00000
(Then, the query sums up the last column in the "table" above, grouped by a_date and workstation). -
Scout: Too much time calculating dirty regions
Hi All,
Frist of all, sorry for my English.
I have a problem with my AIR App, I'm developing for Android and iOS. In iOS works perfectly but on Android the performance is poor.
I checked with Scout and this is what i see:
I don't understand why it spends so much time calculating dirty regions but I didn't change anything on the DisplayList.
Edit: AS you can see in the screen the frames are 13 but in the next frames is over 200 frames and that repeats.
Can someone tell me how to interpret this results?
Thanks a lot.
Goratz
Mensaje editado por: goratzThe feature you are referring to exists in Logic but not in GarageBand (yet?). It is called the Marquee Tool that lets you drag a selection, and when hitting the delete key, that section of the Region(s) will be deleted, and the remaining part of the Region on the right will be moved to the left to close the gap (if you you have set the Drag Mode to "Shuffle L").
Hope that helps
Edgar Rothermich
http://DingDingMusic.com/Manuals/
'I may receive some form of compensation, financial or otherwise, from my recommendation or link.' -
Warning Time calculation "Before Aggregation" is obsolete
Hi,
Recently in our project we have upgraded BW 3.0B to BI7.
After upgrade to BI7, when we run some of the reports we are getting a warning message as below -
Warning Time calculation "Before Aggregation" is obsolete.
Pls refer to the attachment.
Any of our satyam colleagues encounter this warning, if so what was the solution you applied.
Note : I found some notes in Forum like saying use ' Exception Aggregation' for the Before Aggregation.. etc etc., but my problem is in our project thre are many CKFs are there which are using 'Before Aggregation'.
Please let me know if you have any other alternatives.
Thanks !!!!!!!!!Hi,
Try SAP notes 935903.
Symptom
Calculated Key Figures "Existance Indicator" with aggregation behaviour "Before Aggregation" will get now with NW 2004s warning popup "Time of calculation 'Before Aggregation' is obsolete" during execution.
this may be helpful.
thanks,
JituK -
Time Calculation Shell dimension is slow compared to hardcoded measure?
Hi,
I have a measuregroup with 200m+ rows with about 20 measures (sums). I've created a shell dimension to hold my time calculation members such as mtd, qtd, ytd, etc. My problem is that it performs REALLY poorly when using the time calculation dimension.
My script looks like this:
SCOPE
Measuregroupmeasures("MyMeasureGroup");
SCOPE
[Time Calculation].[Calculation].&[None];
THIS =
[Measures].CurrentMember;
END SCOPE;
SCOPE
[Time Calculation].[Calculation].&[MTD];
THIS =
Aggregate
[Time Calculation].[Calculation].&[None]
MTD([Date].[Calendar (YQMD)].CurrentMember)
END SCOPE;
SCOPE
[Time Calculation].[Calculation].&[QTD];
THIS =
Aggregate
[Time Calculation].[Calculation].&[None]
QTD([Date].[Calendar (YQMD)].CurrentMember)
END SCOPE;
SCOPE
[Time Calculation].[Calculation].&[YTD];
THIS =
Aggregate
[Time Calculation].[Calculation].&[None]
YTD([Date].[Calendar (YQMD)].CurrentMember)
END SCOPE;
END SCOPE;
When I use my Calendar hierarchy and time calculation dimension as a background selection it takes forever. It never returns anything. A profiler trace shows that it's just pushing 1 and 21 events (cache data).
If I create the following measure:
CREATE
MEMBER CURRENTCUBE.[Measures].[TestMTD] AS
SUM(MTD([Date].[Calendar (YQMD)].CurrentMember), [Measures].[MyMeasure]),
VISIBLE = 1 ;
it works just fine but the whole point here is I want to avoid creating new measure for every time calculation.
The measuregroup has been partitioned by month and I've set each partition slice to the corresponding month in the calendar hierarchy.
Why doesn't my script perform - please advice :)
Thanks.Hi Mortenbpost,
According to your description, the issue was solved by change Aggregate() function to Sum() function, now you want to know why it behaves like that, right?
In Aggregate function, if a numeric expression is not provided, this function aggregates each measure within the current query context by using the default aggregation operator that is specified for each measure. Here is a thread which discuss difference
between AGGREGATE() and SUM()https://social.msdn.microsoft.com/Forums/sqlserver/en-US/ef4b2555-45f2-4871-9137-a12a637ce2f5/whats-the-difference-between-aggregate-and-sum?forum=sqlanalysisservices
Besides, you can use SQL profiler to monitor what's the difference between using AGGREGATE() and using SUM().
Regards,
Charlie Liao
TechNet Community Support -
Hi all, I'm having a problem with a form that I've created in Adobe LiveCycle designer. I've uploaded the form to the Acrobat.com site (https://acrobat.com/#d=OTqg07-glxa3jkGWUGssVA)
My problem is that the "Sub-Total Salary & Wages) table won't calculate when an add.Instance button is selected. Could some you wonderful experts out there take a look at the form and tell me what I've done wrong?
Thanks so much for your assistance.
ConnieI don't think it's rounding. Otherwise, none of my time calculations would match. Most of them do, but unfortunately, not all of them do.
Also, when I look at the seconds on the lines that don't match, they don't round up (Example: 466.9722222 is rounded to 466.97).
I even changed my calculation to see if that was it. I get the same results.
The new calc I tried:
IIf((Sum(AWDB_Q_Agent_Skill_Group_Half_Hour!CallsHandledToHalf))>0,
(Format(Int(((Sum(AWDB_Q_Agent_Skill_Group_Half_Hour!HandledCallsTimeToHalf))/(Sum(AWDB_Q_Agent_Skill_Group_Half_Hour!CallsHandledToHalf)))/3600),"00") & ":" & Format(Int((((Sum(AWDB_Q_Agent_Skill_Group_Half_Hour!HandledCallsTimeToHalf))/(Sum(AWDB_Q_Agent_Skill_Group_Half_Hour!CallsHandledToHalf)))-(Int(((Sum(AWDB_Q_Agent_Skill_Group_Half_Hour!HandledCallsTimeToHalf))/(Sum(AWDB_Q_Agent_Skill_Group_Half_Hour!CallsHandledToHalf)))/3600)*3600))/60),"00") & ":" & Format(((((Sum(AWDB_Q_Agent_Skill_Group_Half_Hour!HandledCallsTimeToHalf))/(Sum(AWDB_Q_Agent_Skill_Group_Half_Hour!CallsHandledToHalf))) Mod 60)),"00")),"00:00:00") -
N8 Daylight savings time huge problem
I live in Jordan and daylgiht savings is activated on April 1st (the phone time is set to jordan) but today/yesterday (march 25th) it activated daylight savings increasing one hour on the time, the problem is that everytime I adjst the time (decrease 1 hour) it automatically increases another hour making it impossible to fix the time (auto time updates are off).
*noite: i can change the minutes but not the hours
so bascially does anyone else have this problem?? and do you have idea how to fix it
If you found this post or any other psot helpful please press the green kudus starWe will get somebody to look at this incorrect date for the time change, many countries that use daylight savings time do so from the final Sunday of March, which would appear to explain your premature switch in Jordan where you are using a different date for the switch.
With regard to the way the time zone is shown, Symbian phones always show your local time in relation to GMT/UTC, which doesn't include any daylight savings calculation, so for example here in Finland, my N8 shows GMT+3, but once we switch back to normal time in September that will revert to GMT+2.
If this or any post answers your question, please remember to help others by pressing the 'Accept as solution' button. -
Help, I am about to pull my hair out, can't get into a locked drive and Time Machine problem
I've screwed everything up, I think. I had Time Machine doing backups to an external 500Gig drive and somehow it got locked. I went into Get Info to try and change the access but it won't allow me. On top of this problem, my original drive died and I can't get into Time Machine to restore. When I click "Enter Time Machine", nothing happens. I created an eDisk and a startup disk to another external drive that I'm using now, but since everything that's been backed up is on the other drive that I can't access. When I try accessing the drive it gives: "The folder “G-DRIVE ” can’t be opened because you don’t have permission to see its contents." I'm not knowledgeable enough to work from the command line, so if I need to do that to access the drive, please walk me though it. As for the Time Machine problem, I have no idea how to recover anything since it won't even come up, it just sits there. Outside of blowing my brains out, I don't know what to do. Any help would be greatly appreciated as I can't afford to take it to Apple to let them try and fix it.
Hello, not sure how this might affect a TM drive, or not, but...
Here is what i needed to do for my drive "320GB HD", the last command is just for clean up
Open Terminal and type these commands carefully with the spaces & change 320GB HD to the name of your drive.
sudo chflags 0 "/volumes/320GB HD"
sudo chown root "/volumes/320GB HD"
sudo chmod 1775 "/volumes/320GB HD"
sudo -k
That said, these should be sufficient to do the job:
sudo chflags 0 "/Volumes/320GB HD"
sudo chmod a+rx "/Volumes/320GB HD" -
BPS friends,
We have a planning function to copy Versions based with some filters. The copy function takes 5 hours and times out after that. The function is reaching max buffer size as recommended by SAP so we cant increase the buffer size anymore.
We are on BW-BPS 3.5.
How can I solve this time out problem? Please respond to me.Hi Pat,
How many record did you copy ??
Could you restrict the copy in not 1 package ??
Package per package ...
I suggest you ..
e.g. you have restriction by a 0CALMONTH / something ..
Then,
You can copy e.g. for January to March, then March to August, etc.
You can automate it by planning sequence.
Hopefully it can help you a lot.
Regards,
Niel.
thanks for the points you choose to assign. -
When I tap the mail icon on my iPhone 4s, the menu of email servers pops up. I already have a me acct that I check all the time, no problem. So I choose iCloud, sign in and it tells me that I already have an acct….so why can't I get to my emails then? I've turned the phone off and on twice....that has fixed it in the past but not this time....
all fixed ha
-
i have the latest version of free Quicktime, Itunes and unable to view video on my PC all i get is a pink screen the audio is OK i have uninstalled and installed several times same problem, i have a Iphone 4 and unable to view the content.
Open your QuickTime control panel (either via the Control panels, or by going "Edit > Preferences > QuickTime Preferences" in the Quicktime Player). In the Advanced tab, uncheck Enable Direct3D video acceleration:
... and click OK. Quit and restart the QuickTime Player prior to checking to see if the settings change has had any effect. -
Time offset problems with file i/o
Hello everyone, I'm having a problem with the file i/o VI's. I require my application to save serial data at constant five minute intervals. The problem I'm currently seeing is that on each save to a file a time offset is being added which eventually becomes seconds, then minutes and so on. Since this application is meant to be run for a whole year this is a serious problem.
Attached is the VI, an Arduino program simulating how the DAQ sends data and a file showing my time offset problem.
Any ideas/suggestions/fixes are appreciated.
Thanks
Jose Molina
P.S.
To run the VI upload the code to an Arduino, select it's serial port in the popup VI then click on Ok. The VI will wait for a time that is a modulo of 5 then create a folder structure inside the same location as the LLB. Inside this folder structure should be a file with the data which should be saved every five minutes if left at the default averaging time.
Attachments:
7-8-2012.txt 3 KB
Daq_Simulator.zip 1 KB
Weather_DAQ.zip 117 KBSorry I forgot to mention that the averaging time is configurable in the pop up vi at the start. I tried 20 seconds because it's much faster for testing than 5 minutes. Timing is being done by a simple counter that increments each time data is received. So if I receive data the timer increments by 5 because data is sent every 5 seconds. Once the timer is equal to the averaging time the data is sent to the enqueue function and then the blocking dequeue function on the second loop sends the data to the file save vi which then saves the data to the file.
Attachments:
counter.PNG 13 KB -
Execution time calculation issue
Hi,
I have a proceudre which update the tables data and it will capture the execution time for each and every table.
For that i am using below procedure and its giving incorrect values. i.e., its giving end_time<start_time
PFB code(Line nos 25,26,33,73,7679,80 code for exeution time calculation) and output.
1 CREATE OR REPLACE PROCEDURE my_proc
2 IS
3 CURSOR c
4 IS
5 SELECT tablename, TYPE
6 FROM table_list;
7
8 TYPE emp_record IS RECORD (
9 empkey tab1.pkey%TYPE,
10 rid ROWID,
11 ID tab_join.ID%TYPE,
12 dt tab_join.dt%TYPE
13 );
14
15 TYPE emp_type IS TABLE OF emp_record
16 INDEX BY BINARY_INTEGER;
17
18 v_emp emp_type;
19
20 TYPE emp_type_rowid IS TABLE OF ROWID
21 INDEX BY BINARY_INTEGER;
22 tab_no Number:=0;
23 emp_rowid emp_type_rowid;
24 r_cur sys_refcursor;
25 v_start_time TIMESTAMP; /** Added for time calculation*/
26 v_end_time TIMESTAMP; /** Added for time calculation*/
27 string1 VARCHAR2 (1000) := 'SELECT b.empkey, b.ROWID rid, a.id id, a.dt dt FROM emp_base a,';
28 string2 VARCHAR2 (1000) := ' b WHERE a.empkey = b.empkey';
29 rowcnt Number;
30BEGIN
31 FOR c1 IN c
32 LOOP
33 tab_no:=tab_no+1;
34 v_start_time := SYSTIMESTAMP; /** Added for time calculation*/
35 BEGIN
36 string_d := string1 || c1.tablename || string2;
37
38 OPEN r_cur FOR string_d;
39
40 LOOP
41 FETCH r_cur
42 BULK COLLECT INTO v_emp LIMIT 50000;
43
44 IF v_emp.COUNT > 0
45 THEN
46 FOR j IN v_emp.FIRST .. v_emp.LAST
47 LOOP
48 emp_rowid (j) := v_emp (j).rid;
49 END LOOP;
50
51 upd_string := ' UPDATE ' || c1.tablename || ' SET id = ' || v_emp (1).ID || 'WHERE ROWID = :emp_rowid';
52 FORALL i IN emp_rowid.FIRST .. emp_rowid.LAST
53 EXECUTE IMMEDIATE upd_string
54 USING emp_rowid (i);
55 rowcnt := rowcnt + emp_rowid.COUNT;
56 END IF;
57
58 EXIT WHEN v_emp.COUNT < 50000;
59 v_emp.DELETE;
60 emp_rowid.DELETE;
61 END LOOP;
62
63 v_emp.DELETE;
64 emp_rowid.DELETE;
65
66 CLOSE r_cur;
67 EXCEPTION
68 WHEN OTHERS
69 THEN
70 DBMS_OUTPUT.put_line (SQLERRM);
71 END;
72
73 v_end_time := SYSTIMESTAMP; /** Added for time calculation*/
74
75 INSERT INTO exec_time
76 VALUES (tab_no||' '||c1.tablename, v_start_time, v_end_time, v_end_time - v_start_time, rowcnt); /** Added for time calculation*/
77
78 COMMIT;
79 v_start_time := NULL; /** Added for time calculation*/
80 v_end_time := NULL; /** Added for time calculation*/
81 rowcnt := 0;
82 END LOOP;
83END;
Output :
TableName: exec_time
"TABLE_NAME" "START_TIME" "END_TIME" "EXCUTION_TIME" "NO_OF_RECORDS_PROCESSED"
TAB7 5/29/2013 10:52:23.000000 AM 5/29/2013 10:52:24.000000 AM +00 00:00:00.521707 773
TAB5 5/29/2013 10:52:18.000000 AM 5/29/2013 10:52:15.000000 AM -00 00:00:03.381468 56525
TAB6 5/29/2013 10:52:15.000000 AM 5/29/2013 10:52:23.000000 AM +00 00:00:08.624420 49078
TAB2 5/29/2013 10:51:54.000000 AM 5/29/2013 10:51:42.000000 AM -00 00:00:11.932558 529
TAB4 5/29/2013 10:51:47.000000 AM 5/29/2013 10:52:18.000000 AM +00 00:00:31.208966 308670
TAB1 5/29/2013 10:51:45.000000 AM 5/29/2013 10:51:54.000000 AM +00 00:00:09.124238 65921
TAB3 5/29/2013 10:51:42.000000 AM 5/29/2013 10:51:47.000000 AM +00 00:00:04.502432 12118
Issue: I am getting execution time in negitive values because end_time<start_time coming.
Please suggest me how to resolve this.
Thanks.Welcome to the forum!!
Please read {message:id=9360002} from the FAQ to know the list of details (WHAT and HOW) you need to specify when asking a question.
I primarily hate 3 things in your code
1. The way you have used BULK update which is totally unnecessary
2. COMMIT inside LOOP
3. The use of WHEN OTHERS exception.
Your code can be simplified like this
create or replace procedure my_proc
is
v_start_time timestamp;
v_end_time timestamp;
v_rowcnt integer;
begin
for c1 in (
select rownum tab_no
, tablename
, type
from table_list
loop
sql_string := q'[
merge into #tablename# a
using (
select id, dt
from emp_base
) b
on (
a.empkey = b.empkey
when matched then
update set a.id = b.id;
sql_string := replace(sql_string, '#tablename#', c1.tablename);
v_start_time := systimestamp;
execute immediate sql_string;
v_end_time := systimestamp;
v_rowcnt := sql%rowcount;
insert into exec_time
values
c1.tab_no || ' ' || c1.tablename
, v_start_time
, v_end_time
, v_end_time - v_start_time
, v_rowcnt
end loop;
commit;
end; In the INSERT statement on the table EXEC_TIME try to include the column list.
NOTE: The above code is untested. -
Time consuming problem in Self update rule
Hi all:
We have time consuming problem in self update rule.I have ODS ZOMS001,for this we created self update rule.In process chain we include this self update rule and during delta update,it takes 20 to 25 mins even if there is two records or 10000 records.In delta for this self update rule,it takes the whole records in ODS
EX: If i have 10000 records during initialise and 10 records in Delta update...For the delta self update rule it takes 100010 records..But it only update delta records values.
we have to reduce the total time consuming for this self update during delta..
Waiting for your inputs.
It would be helpful for your valuable reply.
Rgds
MSKI think retransporting is the only option available to you. You cannot modify anything in your production system.
IF you have a chance to speak with basis people,ask them to open the system status to modifiable for few minutes.
and make necessary changes in production and bring it back to normal (This is not a best practise in all situations).
hope this helps.
Praveen -
How is Processing time calculated in Simulation
Hi,
How is processing time calculated for every simulation-relevant object?
say for example,
i have 2 objects of person type (p1 and p1)
4 human tasks (T1, T2, T3, T4)
T1 assigned to p1, processing time 2hrs
T2 assigned to p1, processing time 2hrs
T3 assigned to p2, processing time 2hrs
T4 assigned to p2, processing time 2hrs
start --> T1(p1) --> T2(p1) --> T3(p2) --> T4(p2) --> end
Have not set any other simualtion parameters. now,
* Duration for simulation is set to 6hrs,
T1, T2, and T3 are getting processes once, but start event is getting processed twice
# Why is start event getting processed second time?
# Will this take any processing time..
* Duration for simulation set to 7hrs,
start event and T1 gets processed 2 times, T2 and T3 once..
and the total processing time becomes *8hrs*..
# At wht point of time does the second processing of T1 start.
# If it is not after after the completion of one full process cycle, in this case, why not the second processing start at the end # of 2nd hour, or 4th hour.
Thanks,
VishnupriyaHi Vishnupriya,
"Why is start event getting processed second time?"Can you check the "Frequency" attribute of your start event? There you can specify how often the process will be triggered.
"At wht point of time does the second processing of T1 start."You should be able to check it in the Processes (det.). It provides an overview regarding the process instances started during the simulation run. Furthermore you can check the Events (det.) category.
Best regards,
Danilo
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