PXI 6220 - problems with the counter

Hello all,
I try to make a buffered counting with counter0 of my PXI card 6220, to count the speed of a motor through a photocell and a sticker over the pulley of the motor.
I have wired my photocell at PFI8 (source) and I generate a pulse train that I have wired in PFI9.
The input to the counter is a pulse train 5V high level - 0V low level.
The problem is that the counter counts sometimes more than 1 pulse for every turn of the motor. However, apparently the pulse train looks ok.
I don´t know what´s the problem.
The rising slope of the pulses looks very nice so, I think I could discard it.
I can suppose that in between pulses there are some glitches at a very high frequency that I cannot see (I have sampled this signal only at 800kHz and at this frequency there are no glitches), but maybe the counter yes, because it works at 20MHz.
Somebody has experienced this problem. Sometimes ago, using a PCI6221, I solved a similar problem by activating the digital filtering, but it seems it is not possible to activate for this cards. Could somebody confirm it?
Any ideas will be appreciated.
Thank you very much in advance!!

Pete;
I agree that is a little strange.We don't have such problem reported on our Data Bases.
A workaround you can try is to make a sinle pulse goes to the source, before start the buffered acquisition, and see if that makes the counter keeps reporting a 1 value.
You can also try the same thing on another counter of the board to see if that problem is related to the counter you are using.
Regards
Filipe A.
Applications Engineer
National Instruments

Similar Messages

Not intelligible problems with the counter

I use
Board: PCI-6601
Soft: VB 5.0 and ComponentWorks 3.0
For my task I use " Buffered Event Counting" mode. If the signal comes the first on "Source" and then on "Gate" all works wonderfully. But if the signal comes on "Gate" the first I receive mistake
Error:-10920
Context: Reading data
Description: "One or more data points might have been lost during buffered GPCTR operations due to speed limitations of your system".
It is very strange. I would like to see zero. Somebody can face with this problem? Or the counter cannot work in such mode?
Thanks.

Pete;
I agree that is a little strange.We don't have such problem reported on our Data Bases.
A workaround you can try is to make a sinle pulse goes to the source, before start the buffered acquisition, and see if that makes the counter keeps reporting a 1 value.
You can also try the same thing on another counter of the board to see if that problem is related to the counter you are using.
Regards
Filipe A.
Applications Engineer
National Instruments

Some problems with the count function

Hi Guys,
I am trying to return following:
2009 GUESTS NIGHTS between 1 and 5 = 80 guests
2009 GIESTS NIGHTS between 5 and 10 = 100 guest
Whe I use the combine with a similar report option (union), I issue the following query:
SELECT saw_0 saw_0, saw_1 saw_1, saw_2 saw_2, saw_3 saw_3 FROM ((SELECT Resort.Resort saw_0, Time."Year" saw_1, "Non Revenue Facts".Nights saw_2, count(Guests."Guest Name") saw_3 FROM GUEST WHERE "Non Revenue Facts".Nights BETWEEN 1 AND 5 GROUP BY saw_1, saw_2, saw_0) UNION (SELECT Resort.Resort saw_0, Time."Year" saw_1, "Non Revenue Facts".Nights saw_2, count(Guests."Guest Name") saw_3 FROM GUEST WHERE "Non Revenue Facts".Nights BETWEEN 1 AND 5)) t1 GROUP BY saw_1, saw_2, saw_0 , saw_3 ORDER BY saw_0
The query return just the results for nights between 1 and 5.
I need two columns showing the count of the guests with nights till 5 and one other column showing the count of the guests with nights from 5 to 10.
Any help would be really appreciated.
Regards
Giuliano

Sorry I did not get this.
I should still use the union statement and than build the below function in the nights fields?
What I am trying to achieve is simply how many guests do i have with at least 1 night and max 5 nights
and how many guests i have with at least 5 nights and a max of 10 nights.
I should have 2 columns:
1 label Nights between 1 and 5
2 label Nights beween 5 and 10
the count(guests) column should than show how many guests in the first range and how many in the second.
Regards
G.

Problems with the count tool, I am getting an error message when I try to use it

I get the message that there are too many count points on the screen to allow manual editing of the count

BOILERPLATE TEXT:
Note that this is boilerplate text.
If you give complete and detailed information about your setup and the issue at hand,
such as your platform (Mac or Win),
exact versions of your OS, of Photoshop (not just "CS6", but something like CS6v.13.0.6) and of Bridge,
your settings in Photoshop > Preference > Performance
the type of file you were working on,
machine specs, such as total installed RAM, scratch file HDs, total available HD space, video card specs, including total VRAM installed,
what troubleshooting steps you have taken so far,
what error message(s) you receive,
if having issues opening raw files also the exact camera make and model that generated them,
if you're having printing issues, indicate the exact make and model of your printer, paper size, image dimensions in pixels (so many pixels wide by so many pixels high). if going through a RIP, specify that too.
A screen shot of your settings or of the image could be very helpful too,
etc.,
someone may be able to help you (not necessarily this poster, who is not a Windows user).
Please read this FAQ for advice on how to ask your questions correctly for quicker and better answers:
http://forums.adobe.com/thread/419981?tstart=0
Thanks!

Problem with the FOR statement.....again!

Hi everyone,
Well I'm still trying to do a car slideshow using external
files and can't seem to see the end. The current movie is here:
http://www.virtuallglab.com/projects.html
I also attach the code. My problem is I had originally set up
an animation with 2 pictures sliding in with some text, and then
wait 4 seconds before sliding out, and then next pictures and text
would slide in and so on, using a setInterval.
The problem is the FOR loop seems to skip the setInterval and
the function "wait", so it just loops quickly and jumps to last
picture, so on the example above, it just slides the last picture
(i=9) and that's it!
Can you not include another function within a FOR statement.
Or is there a way to tell the FOR loop to wait until all motion is
finished?
Any help greatly appreciated
import mx.transitions.*;
import mx.transitions.easing.*;
for (i=0; i<10 ; i++) {
var picLeft = "pics/"+i+".jpg";
var picRight = "pics/"+i+"b.jpg";
var txtToLoad = "text/"+i+".txt";
this.createEmptyMovieClip("leftHolder",1);
leftHolder.loadMovie(picLeft,i,leftHolder.getNextHighestDepth());
leftHolder._x = -200;
leftHolder._y = 15;
var leftTween:Tween = new Tween(leftHolder, "_x",
Strong.easeOut, leftHolder._x, 10, 2, true);
this.createEmptyMovieClip("centerHolder",2);
centerHolder.loadMovie(picRight,i+"b",centerHolder.getNextHighestDepth());
centerHolder._x = 180;
centerHolder._y = 250;
var centerTween:Tween = new Tween(centerHolder, "_y",
Strong.easeOut, centerHolder._y, 15, 2, true);
text._x = 600;
myData = new LoadVars();
myData.onLoad = function(){
text.carText.text = this.content;
myData.load(txtToLoad);
var textTween:Tween = new Tween(text, "_x", Strong.easeOut,
text._x, 420, 2, true);
myInterval = setInterval(wait, 4000);
function wait() {
var leftTweenFinished:Tween = new Tween(leftHolder, "_x",
Strong.easeOut, leftHolder._x, -200, 1, true);
var centerTween:Tween = new Tween(centerHolder, "_y",
Strong.easeOut, centerHolder._y, 250, 1, true);
var textTween2:Tween = new Tween(text, "_x", Strong.easeOut,
text._x, 600, 1, true);
clearInterval(myInterval);
***************************************************************************************** ***

There is no way to tell a for loop to wait. That is not what
they do.
The entire for loop will execute (if possible, and it doesn't
enter some kind of continuous infinite loop) completely before each
time the frame is rendered.
If you want to spread things out over time you need to use
the setInterval -- but not inside a for loop! If you do that you
immediately set however many intervals as your loop has. In this
case you will also assign the ids for those intervals to the same
variable, effectively overwriting the value so you will never be
able to clear most of those intervals.
So you need to rethink you whole structure. Set up some kind
of counter and limit like this:
var slidesToShow:Number=10;
var curSlide:Number=0;
Then have your setInterval increment the curSlide each time
it is called and check to see if it has shown all of them. That is
where your "loop" comes in.
As for the other part of your question -- yes you actually
have two different issues going on -- again you cannot make a for
loop wait for anything. So no there is no way to pause it while you
wait for your tween to end. But you can be notified when a tween
ends.
Check out the documentation about the tween class in the help
files. There you will find the onMotionFinished event. So you can
set up one of those to start whatever needs to be started when the
tween has finished.
You should also use the MovieClipLoader class to load your
images, because you have no idea how long it will take to load
them. Using that class you get a nice event (onLoadInit) that tells
you when the asset is ready to be used.
Finally I'm thinking you might want to use setTimeout instead
of setInterval. It only goes once, while setInterval repeats
forever. So I would think your algorithm would be something like
this.
1. load external asset
2. when ready animate in and set onMotionFinished handler
3. when motion is finished start loading next asset and
setTimeout for 4 seconds.
4. when 4 seconds is up or the clip is loaded (which ever
takes longer) go to 2 and repeat.
If this is going to be run locally on a hard drive or CD you
won't have any problem with the length of time it takes to load the
external assets, but if it is over the web it will take time.

Photoshop CS5.1 Crashes Upon Opening: "Photoshop has encountered a problem with the display driver-"

Every time I try to open photoshop I get a window that pops up and says:
"Photoshop has encountered a problem with the display driver, and has temporarily disabled GPU enhancements. Check the video card manufacturer's website for the latest software.
GPU enhancements can be enable in the Performance panel of Preferences."
Then windows shuts the program down. The details of the problem are:
"Files that help describe the problem:
C:\Users\Owner\AppData\Local\Temp\WER70AD.tmp.WERInternalMetadata.xml
C:\Users\Owner\AppData\Local\Temp\WER9389.tmp.appcompat.txt
C:\Users\Owner\AppData\Local\Temp\WER9407.tmp.hdmp"
I'm on a custom Asus
I'm using Win7 Home Premium 64-bit
16GB RAM
Nvidia Geforce GTX 560 2GB video card
Intel i7 core 2.2 GHz
12 GB of memory
The error happens so quickly that I don't have time to do anything. Please help. >.< I've been on hold for *checks phone* 2 hours exactly. Wow. It is a legit copy and was working last month with no trouble. I've updated the drivers and tried a few solutions that have worked for other people that I found on Google (such as disabling CUDA and setting my "power management mode" to "prefer maximum performance" on my video card) but so far nothing has worked.
Thanks in advance!

It has stopped crashing because somehow it turned off "Enable GL Drawing" on its own because I could never even get a menu open. Not sure how it did that but I am grateful. I still get the error when I open Photoshop up but at least it hasn't crashed yet. At the time when it was crashing I never would have been able to get you the system info due to the speed that it was crashing upon just opening the program. In case you still need it:
Adobe Photoshop Version: 12.1 (12.1x20110328 [20110328.r.145 2011/03/28:10:30:00 cutoff; r branch]) x64
Operating System: Windows 7 64-bit
Version: 6.1 Service Pack 1
System architecture: Intel CPU Family:6, Model:10, Stepping:7 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2
Physical processor count: 8
Processor speed: 2394 MHz
Built-in memory: 16361 MB
Free memory: 13322 MB
Memory available to Photoshop: 14694 MB
Memory used by Photoshop: 60 %
Image tile size: 128K
Image cache levels: 4
OpenGL Drawing: Disabled.
OpenGL Drawing Mode: Basic
OpenGL Allow Normal Mode: True.
OpenGL Allow Advanced Mode: False.
OpenGL Crash File: Detected.
OpenGL Allow Old GPUs: Not Detected.
Video Card Vendor: NVIDIA Corporation
Video Card Renderer: GeForce GTX 560M/PCIe/SSE2
Display: 1
Display Bounds:= top: 0, left: 0, bottom: 1080, right: 1920
Video Card Number: 1
Video Card: NVIDIA GeForce GTX 560M
Driver Version: 9.18.13.697
Driver Date: 20121002000000.000000-000
Video Card Driver: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Video Mode: 1920 x 1080 x 4294967296 colors
Video Card Caption: NVIDIA GeForce GTX 560M
Video Card Memory: -2047 MB
Serial number: 92628077745082451425
Application folder: C:\Program Files\Adobe\Adobe Photoshop CS5.1 (64 Bit)\
Temporary file path: C:\Users\Owner\AppData\Local\Temp\
Photoshop scratch has async I/O enabled
Scratch volume(s):
C:\, 931.4G, 511.4G free
Primary Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CS5.1 (64 Bit)\Plug-ins\
Additional Plug-ins folder: not set
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   Cineon 12.1 (12.1x20110328 [20110328.r.145 2011/03/28:10:30:00 cutoff; r branch])
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   Picture Package Filter 12.1 (12.1x20110328 [20110328.r.145 2011/03/28:10:30:00 cutoff; r branch])
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   Wave 12.0.2
   Wavefront|OBJ 12.1 (12.1x20110328 [20110328.r.145 2011/03/28:10:30:00 cutoff; r branch])
   WIA Support 12.1 (12.1x20110328 [20110328.r.145 2011/03/28:10:30:00 cutoff; r branch])
   Wind 12.0.2
   Wireless Bitmap 12.1 (12.1x20110328 [20110328.r.145 2011/03/28:10:30:00 cutoff; r branch])
   ZigZag 12.0.2
Plug-ins that failed to load: NONE
Flash:
   Mini Bridge
   Kuler
   Access CS Live
   CS Review
Installed TWAIN devices: NONE

Problem with the "mail me" button

Since I installed both Iweb 09 and Snow Leopard, there is a problem with the "mail me" buttons on my websites. Nothing happens when i click on it even if i see my web adress when my cursor is on the button.
Do somebody had the same problem and do you know how to avoid it.
Thanks a lot

I checked your site and found that the mail me button was not overlapping or touching any other object and positioned entirely in the footer of the page. All looks good and it works for me. You might try moving the button, logo and counter to the bottom of the page content section, publish and see if that makes a difference for those computers that can't.
Try the following on your Macbook, open Safari, clear the cache (CommandOptionE), load your site and try again. If that makes it work for your MB tell your friends to clear their caches and try again. Might be something as simple as that.

Problem with the progress line in MS Project

Hi there,
I have a question about the progress line in MS Project.
My boss asked me to see how far we were with the work, so I inserted the column '% Complete' and then the progress line.
Now my boss has a problem with the layout and I don't know how the fix it. The problem is at line 43 and 44, where the progress line indicates that we are behind on that group of tasks. But is it possible for the progress line to not indicate it on lines
43 and 44 but only on lines 45 to 50? So my question is if it's possible to make the progress line go down (vertically) over line 43 and 44 instead of jumping to the back?
It would be much more simple if I could insert lines 43 ad 44 as text but not as a task, so that it just counts as a title of some tasks but nothing more than that. Is that possible in Project?
(Lines 45 to 50 are subtasks for line 44, and 44 is a subtask for 43. So line 43 is the main task.)
Normally there was a picture here but I couldn't upload it because my account is not yet verified... So hopefully you can understand the problem with the text.
If anyone could give my some advice or the solution, that would be great!
Thanks in advance!

Hi Thunderbal66--
Basically your activity 43 is late because the sub tasks are also late. Thus MS Project shows the situation by moving the progress line backward. The progress line is automatically displayed based on your project progress, there is no way to manually change
it unless you update your project.
I think the question is not there. This is more a matter of project governance and transparency: why not showin that a project is late when it is late and taking the appropriate corrective actions?
Hope this helps,
Guillaume Rouyre, MBA, MVP, P-Seller |

Problem with the "Total By" icon

Hi.
Working with Answer I've a problem with the "Total By" icon when the fact displayed is semi-additive.
I try to explain better:
1) my fact table has the following dimensions
Time (year granularity)
City
Type of contracts
2) the fact table contains the fact "Number of Active Contracts"
this fact is additive by City and Type but not by Year.
The "Number of Active Contracts" is calculated usign 2 existing logical columns
Sum (of Number Of Contracts (at base granularity)) / Count Distinct ( of Years )
This fact express an average when more than year is involed in the aggregation,
but express the exact number of contracts if the year is displayed as an output column of the report.
This fact works well changing the aggregation in reports, but when I click on the "Total By" icon to show
the totals its behaviour is different from expected.
consider the report with the following columns:
Yearm City, Number of Active Contracts
Click her to view it: http://yfrog.com/euerrtotaliconj
The "Total By" icon Instead of the sum divided by ditinct years involed, i.e. 1, shows the sum divided by the number of Cities.
It seem it is counting 5 tiimes (= number of cities) the same year.
But If make a report with
Year, Number of Active Contracts
Click her to view it: http://yfrog.com/mjoktotalj
it works as expected !
Many thanks,
Andrea
Edited by: aromani on 17-nov-2010 8.06

Philipp is right to tell the developer that the toolbar is automatically disappearing after customizing the add-on on the toolbar. I tried it, and it looks like it gets attached to the Bookmark Tool bar. It may help to make sure all the Toolbars are visible in '''View> Toolbars. '''
It may also be because I have too many extensions on my toolbar ( Too many favorites :-))

Problem with the default selection screen condition

hi guys,
I have got some problem with the default screen given by the PNP logical database, P0000 infotype automatically populated according to the condition given in default screen.
Reg,
Hariharan

Don know what u r trying to acheive.
1) when u have specified PNP in the logical databse field of attributes of program, the SAP wil proivde u default PNP screen and here u can also add ur paramters if u want.
2) in the program u have to declare like
INFOTYPES: 0000,0001. "Etc
for all the infotypes u want to use in the program.
3) it is the GET PERNR event which wil fil all the p0000 and p0001 (internal tables for al the infotypes declared via INFOTYPES syntax as shown above)
4) after tht get pernr, u now have data in P tables and u can use it for further reporting.
5) refer below dummy code -
REPORT ZPPL_PREVEMPLOYERS   message-id rp
                             line-size 250
                             line-count 65.
*Program logic :- This Report is used to Download all the Previous
* Employer (IT0023) records of the employees
*eject
*& Tables and Infotypes                                                *
tables: pernr.
infotypes: 0000,
           0001,
           0002,
           0023.
*eject
*& Constants                                                           *
constants: c_1(1)       type c               value '1'   ,
           c_3(1)       type c               value '3'   ,
           c_i(1)       type c               value 'I'   ,
           c_x(1)       type c               value 'X'   ,
           c_eq(2)      type c               value 'EQ' ,
           c_pl03       like p0001-werks     value 'PL03'.
*eject
*& Selection-Screen                                                    *
parameters: p_file like rlgrap-filename default 'C:TempABC.xls',
            p_test as checkbox default c_x               .
*eject
*& Internal tables                                                     *
* Internal Table for Output
data: begin of t_output occurs 0    ,
       pernr like pernr-pernr       ,
       nachn like p0002-nachn       ,
       vorna like p0002-vorna       ,
       orgeh_stext like p1000-stext ,
       plans_stext like p1000-stext ,
       begda like p0023-begda       ,
       endda like p0023-endda       ,
       land1 like p0023-land1       ,
       arbgb like p0023-arbgb       ,
       ort01 like p0023-ort01   .
data: end of t_output           .
*eject
*& Variables                                                           *
data: o_stext like p1000-stext,
      p_stext like p1000-stext.
*eject
*& Initialization                                                      *
Initialization.
* Initialize Selection-Screen values
perform init_selction_screen.
*eject
*& AT Selection-screen                                                 *
at selection-screen .
* Check if Test run selected, download file name should be entered
if p_test is initial. "
    if p_file is initial.
      message e016 with 'Please enter file name'
                        'specifying complete path'.
    endif.
endif.
*eject
*& Start-of Selection                                                  *
Start-of-selection.
get pernr.
clear t_output.
* Read Infotype 0
rp-provide-from-last p0000 space pn-begda pn-endda.
check pnp-sw-found eq c_1.
* Check if employee is active
check p0000-stat2 in pnpstat2.      "pernr Active
* Read Infotype 1
rp-provide-from-last p0001 space pn-begda pn-endda.
check pnp-sw-found eq c_1.
* check if employee belongs to PL03
check p0001-werks in pnpwerks. "belongs to PL03
* Check if emp belongs to Active Group
check p0001-persg in pnppersg.
* Read Infotype 2
rp-provide-from-last p0002 space pn-begda pn-endda.
check pnp-sw-found eq c_1.
* Read Org Unit Text.
CALL FUNCTION 'HR_READ_FOREIGN_OBJECT_TEXT'
     EXPORTING
          OTYPE                   = 'O'
          objid                   = p0001-orgeh
          begda                   = p0001-begda
          endda                   = p0001-endda
          reference_date          = p0001-begda
     IMPORTING
          object_text             = o_stext
      EXCEPTIONS
          nothing_found           = 1
          wrong_objecttype        = 2
          missing_costcenter_data = 3
          missing_object_id       = 4
          OTHERS                  = 5.
*Read Position Text.
CALL FUNCTION 'HR_READ_FOREIGN_OBJECT_TEXT'
     EXPORTING
          OTYPE                   = 'S'
          objid                   = p0001-plans
          begda                   = p0001-begda
          endda                   = p0001-endda
          reference_date          = p0001-begda
     IMPORTING
          object_text             = p_stext
     EXCEPTIONS
          nothing_found           = 1
          wrong_objecttype        = 2
          missing_costcenter_data = 3
          missing_object_id       = 4
          OTHERS                  = 5.
* Gather all the required information related to the emp
move: pernr-pernr to t_output-pernr,
        o_stext to t_output-orgeh_stext,
        p_stext to t_output-plans_stext,
        p0002-nachn to t_output-nachn,
        p0002-vorna to t_output-vorna.
* Gather previous Employee details
loop at p0023.
    move-corresponding p0023 to t_output.
    append t_output.
endloop.
*eject
*& End-of Selection                                                    *
end-of-selection.
perform print_report.
* Downlaod the file
if not t_output[] is initial.
    if p_test eq space.
      perform download_file.
    endif.
else.
    write: 'No records selected' color col_negative.
endif.
*eject
*& Top-of-page                                                         *
Top-of-page.
* Print Header
perform print_header.
*eject
*&      Form download_file
* Description :
FORM download_file .
DATA: full_file_name    TYPE string,
        z_akt_filesize    TYPE i     .
full_file_name = p_file.
* download table into file on presentation server
CALL METHOD cl_gui_frontend_services=>gui_download
    EXPORTING
      filename                = full_file_name
      filetype                = 'DAT'
      NO_AUTH_CHECK           = c_x
      codepage                = '1160'
    IMPORTING
      FILELENGTH              = z_akt_filesize
    CHANGING
      data_tab                = t_output[]
    EXCEPTIONS
      file_write_error        = 1
      no_batch                = 2
      gui_refuse_filetransfer = 3
      invalid_type            = 4
      no_authority            = 5
      unknown_error           = 6
      header_not_allowed      = 7
      separator_not_allowed   = 8
      filesize_not_allowed    = 9
      header_too_long         = 10
      dp_error_create         = 11
      dp_error_send           = 12
      dp_error_write          = 13
      unknown_dp_error        = 14
      access_denied           = 15
      dp_out_of_memory        = 16
      disk_full               = 17
      dp_timeout              = 18
      file_not_found          = 19
      dataprovider_exception = 20
      control_flush_error     = 21
      not_supported_by_gui    = 22
      error_no_gui            = 23
      OTHERS                  = 24.
IF sy-subrc               NE        0.
    MESSAGE e016 WITH 'Download-Error; RC:' sy-subrc.
ENDIF.
ENDFORM.                    " download_file
*eject
*&      Form print_report
*Description:
FORM print_report .
data: i       type i,
        w_count type i.
sort t_output.
* Print the report
loop at t_output.
    i = sy-tabix mod 2.
    if i eq 0.
      format color col_normal intensified on.
    else.
      format color col_normal intensified off.
    endif.
    write:/1     t_output-pernr          ,
           10     t_output-vorna(25)     ,
           35    t_output-nachn(25)      ,
           61   t_output-orgeh_stext     ,
           102 t_output-plans_stext     ,
           143 t_output-begda           ,
           154   t_output-endda          ,
           168   t_output-land1          ,
           178   t_output-arbgb(40)      ,
           219   t_output-ort01          ,
           249   space              .
endloop.
uline.
Describe table t_output lines w_count.
Skip 2.
Write:/ 'Total No of Records Downloaded: ' color col_total,
          w_count.
ENDFORM.                    " print_report
*eject
*&      Form print_header
*Description:
FORM print_header .
skip 1.
Uline.
format Intensified on color col_heading.
write:/1   'Pers. #'        ,
         10   'Last Name'     ,
         35   'First Name'    ,
         61   'Org Unit'      ,
         102 'Position'      ,
         143 'Beg Date'      ,
        154   'End Date'      ,
        168   'Cntry Key'     ,
        178   'Prev Employer' ,
        219 'City'           ,
        249   space          .
format intensified off color off.
uline.
ENDFORM.                    " print_header
*eject
*&      Form init_selction_screen
*Description:
FORM init_selction_screen .
refresh: pnpwerks,
           pnppersg,
           pnpstat2.
clear:   pnpwerks,
           pnppersg,
           pnpstat2.
pnpwerks-sign   = c_i.
pnpwerks-option = c_EQ.
pnpwerks-low    = c_pl03.
append pnpwerks.
pnppersg-sign   = c_i.
pnppersg-option = c_EQ.
pnppersg-low    = c_1.
append pnppersg.
pnpstat2-sign   = c_i.
pnpstat2-option = c_EQ.
pnpstat2-low    = c_3.
append pnpstat2.
ENDFORM.                    " init_selction_screen

Problem with the cache hit ratio

Hello,
I ma having a problem with the cache hit ratio I am geting. I am sure, 100% sure, that something has got to be wrong with the cache hit ratio I am fetching!
1) I will post the code that I am using to retrieve the cache hit ratio. I've seen about a thousand different equations, all equivalent in the end.
In oracle cache hit ratio seems to be:
cache hits / cache lookups,
where cache hits <=> logica IO - physical reads
cache lookups <=> logical IO
Now some people use the session logical Reads stat, from teh view v$sysstat; others use db block gets + db consistent gets; whatever. At the end of the day its all the same, and this is what i Use:
SELECT (P1.value + P2.value - P3.value) AS CACHE_HITS, (P1.value + P2.value) AS CACHE_LOOKUPS, P4.value AS MAX_BUFFS_SIZEB
FROM v$sysstat P1, v$sysstat P2, v$sysstat P3, V$PARAMETER P4
WHERE
P1.name = 'db block gets' AND
P2.name = 'consistent gets' AND
P3.name = 'physical reads' AND
P4.name = 'sga_max_size'
2) The problem:
The cache hit ratio I am retrieving cannot be correct. In this case i was benchamarking a HUGELY inneficient query, consisting of the Union of 5 Projections over the same source table, and Oracle is configured with a relatively small SGA of 300 MB. They query plan is awful, the database will read the source database table 5 times.
And I can see in the physical data statistics of the source tablespace, that total Bytes read is aproximatly 5 times the size of the text file that I used to bulk load data into the databse.
Some of the relevant stats, wait events:
db file scattered read     1129,93 seconds
Elapsed time: 1311,9 seconds
CPU time: 179,84
SGA max Size: 314572800 Bytes
And total bytes read: 77771964416 B (aproximatly 72 Gga bytes)
the source txt loaded to the database was aprox 16 G
Number of reads was like 4.5 times the source datafile.
I would say this, given the difference between CPU time and Elapsed Time, it is clear that the query spent almost all of its time doin DB file scattered reads. How is it possible that i get the following cache hit ratio:
Cache hit Ratio: 0,92
Cache hits: 109680186
Cache lookups: 119173819
I mean only 8% of that Logical I/O corresponded to physical I/O? It is just not possible.
3) Procedure of taking stats:
Now to retrieve these stats I snapshot the system 2 times. One before the query, one after the query.
But: this is not done in a single session. In total 3 sessions are created. One session two retrieve the stats before the query, one session to run the query, a last session to snapshot after the query.
Could the problem, assuming there is one, be related to this:
"The V$SESSTAT view contains statistics on a per-session basis and is only valid for the session currently connected. When a session disconnects all statistics for the session are updated in V$SYSSTAT. The values for the statistics are cleared until the next session uses them."
What does this paragraph mean. Does it mean that the v$sysstat only shows you the stats of the last session that closed? Or does it mean thtat v$sysstat is increamented with the statistics of each v$sessionstat once a session terminates? If so, then my procedure for gathering those stats should be correct.
Can anyone help me sort out the origin of such a high cache hit ratio, with so much I/O being done?

sono99 wrote:
Hi,s
first of, let me start by saying that there were many things in your post that you mentioned that I could no understand. 1. Because i am not an Oracle Expert, i use whatever RDBMS whenever i need to. 2. Because another problem has come up and, right now, i cannot inform myself to be able to comprehend it all.Well, could it be that you need to understand the database you are working on in order to comprehend it? That is why we strongly advise you to read the concepts manual first, you need to understand the architecture that Oracle uses, as well as the basic concepts of how oracle does locking and maintains read consistency. It does these different than other database engines, and some things become nonsense if looked at from the viewpoint of a single user.
>
quote:
It would be useful to see the execution plan jhust in case you have simplified the problem so much that a critical detail is missing.
First, the query code:
2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:>SQL> CREATE TABLE FAVFRIEND
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 2 NOLOGGING TABLESPACE TARGET
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 3 AS
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 4 SELECT ID as USRID, FAVF1 as FAVF FROM PROFILE
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 5 UNION ALL
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 6 SELECT ID as USRID, FAVF2 AS FAVF FROM PROFILE
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 7 UNION ALL
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 8 SELECT ID as USRID, FAVF3 AS FAVF FROM PROFILE
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 9 UNION ALL
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 10 SELECT ID as USRID, FAVF4 AS FAVF FROM PROFILE
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 11 UNION ALL
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 12 SELECT ID as USRID, FAVF5 AS FAVF FROM PROFILE
[2009-10-20 15:11:59,141 INFO]: OUTPUT_GOBLER:> 13 ;
Now, Althought it is clear from the query that the statement is executed with the NOLOGGiNG, i have disabled the logging entirely for the tablespace.There are certain rules about nologging that may not be obvious. Again, this derives from the basic Oracle architecture, and if you use the wrong definitions of things like logging, you will be led down the primrose path to confusion.
>
Futhermore, yes, the RDBMS is a test RDBMS... I have droped the database a few times... And I am constantly deleting an re-inserting data into the source database table named PROFILE.>
I also make sure do check all the datafile statistics, and for this query the amount of RedoLog, Undo "Log", Templife used is negligible, practically zero.Create table is DDL, which has implied commits before and afterwards. There is a lot going on, some of it dependent on the volume of data returned. The Oracle database writer writes things out when it feels like it, there are situations where it might just leave it in memory for a while. With nologging, Oracle may not care that you can't perform recovery if it is interrupted. So you might want to look into statspack or EM to tell you what is going on, the datafile statistics may not be all that informative for this case.
>
Most of the I/O is reading, a few of the I/O is writing.
My idea is not to optimize this query, it is to understand how it performs. Well, have you read the Concepts manual?
I have other implementations to test, namely I having trouble with one of them.
Furthermore, I doubt the query Plan Oracle is using actually involves tablescans (as I I'd like it to do); because in the Wait Events, most of the wait time for this query is spent doing "db file scattered read". And I think this is different from a tablescan.Please look up the definition of [db file scattered read|http://download.oracle.com/docs/cd/B19306_01/server.102/b14211/instance_tune.htm#sthref703].
>
Do you really have to use sessions external to the query session ? Can you query v$mystat joined to v$statname from the session itself.
No, I don't want to that!
I avoid as much as possible having the code I execute being implemented in java. Why do you think java has anything to do with this? In your session, desc v$mystat and v$statname, these are views you can look at.
When i can avoid it I don't query the database directly through JDBC, i use the RDBMS command line client, which is supposed to be very robust. Er, is that sqlplus?
So yes, I only connect to the database with JDBC... in very last session.
Of course, I Could Have put both the gather stats before query and gathers stats after query a single script: the script that would be also runing the query.
But that would cause me a number of problems, namely some of the SQL i build has to be implemented dynamically. And I don't want to be replicating the snapshoting code into every query script I make. This way I have one sql with the snapshoting scripts; and multiple scripts for running each query. I avoid code replication in this manner.Instrumentation is a large subject; dynamic sql generation is something to be avoided if possible. Remember, Oracle is written with the idea that many people are going to be sharing code and the database, so it is optimized in that way. For SQL parsing in particular, if every SQL is different, you get a performance problem called "hard parsing." You can (and generally should, and sometimes can't avoid) use bind variables so that Oracle doesn't need to hard parse every SQL. In fact, this is one of those things that applies to other engines besides Oracle. I would recommend you read Tom Kyte's books, he explains what is going on in detail, including in some places the non-Oracle viewpoint.
>
Furthermore, Since the database is not a production database, it is there so I can do my tests. I don't have to be concerned with what other sessions may be doing to my system. There are only the sessions I control.No, there are sessions Oracle controls. If you are on unix, you can easily see this, but there are ways to see it on Windows, too. In some cases, your own sessions can affect themselves.
>
then what it the array fetch size ? If the array fetch size is large enough the number of block visits would be similar to the number of physical block reads.
I don't know what the arraysize you mention is. i have not touched that parameter. So whatever it is, it's the default.You should find out! You can go to http://tahiti.oracle.com and type array fetch size into the search box. You can also go to http://asktom.oracle.com and do the same thing, with some more interesting detail.
>
By the way, I don't get the query results into my client, the query results are dumped into a target output table.
So, if the arraysize has something to do with the number of rows that Oracle is returning the client in each step... I think it doesn't matter.You may hear this phrase a lot:
"It depends."
>
As for the query plan, If i am not mistaken you can't get get query plans for queries that are: create table as select.What?
JG@TTST> explain plan for create table jjj as select * from product_master;
Explained.
JG@TTST> select count(*) from plan_table;
COUNT(*)
         3
I can however commit the create table part and just call for the evalution of the Select part of the query; i believe it should be same.
"Optimizer"     "Cost"     "Cardinality"     "Bytes"     "Partition Start"     "Partition Stop"     "Partition Id"     "ACCESS PREDICATES"     "FILTER PREDICATES"
"SELECT STATEMENT"     "ALL_ROWS"     "2563"     "586110"     "15238860"     ""     ""     ""     ""     ""
"UNION-ALL"     ""     ""     ""     ""     ""     ""     ""     ""     ""
"TABLE ACCESS(FULL) SONO99.PROFILE"     ""     "512"     "117222"     "3047772"     ""     ""     ""     ""     ""
"TABLE ACCESS(FULL) SONO99.PROFILE"     ""     "513"     "117222"     "3047772"     ""     ""     ""     ""     ""
"TABLE ACCESS(FULL) SONO99.PROFILE"     ""     "513"     "117222"     "3047772"     ""     ""     ""     ""     ""
"TABLE ACCESS(FULL) SONO99.PROFILE"     ""     "513"     "117222"     "3047772"     ""     ""     ""     ""     ""
"TABLE ACCESS(FULL) SONO99.PROFILE"     ""     "513"     "117222"     "3047772"     ""     ""     ""     ""     ""
This query plan was taken from sql developer, exported to txt, and the PROFILE table here has only 100k tuples.
Right now I am more concerned with testing the MODEL query. Which Oracle doesn't seem to be able any more... but that is a matter for another thread.
Regarding this plan. The Union ALL seems to be more than just a binary Operator... IT seems to be Neray.
The union all on that execution plan seems to be taking as leaf tables 5 99sono.Profile tables, and be making a table scan to them all. So I'd say that the RDBMS should only scan each database block once and not 5 times.
But: It doesn't seem to be so. IT seems like what oracle is doing is scanning completly each the table, and then moving on to next select statement in the UNION ALL. Because given the amount of source table that was read, 5 times greater than the size of the source table. Oracle didn't reuse read blocks.
But this is just my feeling.Your feeling is uninteresting. Telling us what you really hope to accomplish might be more interesting.
Anyway, in terms of consistent gets, how many consistent gets should the RDBMS be doing? 5
One for each table block?It depends.
>
My best regards,
Nuno (99sono xp).

Problem with message count

hello ,
I have problem with message count, in my inbox there are more than 0 messages but i got result of
Folder inbox = store.getFolder("Inbox")
int c =inbox.getMessageCount()
of c is 0
i.e i got c as zero rather than 5.

I am seeing the same thing and I agree with MathiasF's observation. My count seems to increase when I do a search for mail on the server. This has happened previously (iOS 5.x) but ending the Mail app always fixed it. The only way I can correct the count now is if I turn off sync for Mail on the Exchange account and re-enable. This clears my mail and causes my phone to go out and redownload. Rebooting and resetting the iPhone has not helped.
I'm on Sprint - 32GB White iPhone 4S running iOS 6.0 (10A403)

Purchased 2 iphone 5's. Both have cracked the screen in the first week. Never had this problem with the previous versions iphones being so fragile.

I purchased 2 iphone 5's. One for my husband and one for me. Both have cracked the screen in the first week. I even have a case on mine. Never had this problem with the previous versions iphones being so fragile. Has anyone else experienced this?

Tests by some of the web sites and magazines claim that the iPhone 5 is in fact more rugged than previous models. That doesn't obviate the possibility of an assembly defect that would make yours more susceptible to damage, but if you dropped or impacted them and they cracked, then your warranty will not apply and you'll have to pay for replacement, either the AppleCare+ "deductible", if you purchased AppleCare+ with your iPhone, or Apple's normal out-of-warranty replacement charge.
You can of course make an appointment at an Apple Store, explain the situation, and hope that there's something they can do for you. Don't count on it, though.
Regards.

I just order 8 calendars from iPhoto and they came to me fine. Now I need to order two more but when I go thru the process I get a message saying:unable to assemble calendar. There is a probleme with the photo with the file name"(Null)" more........ .

Would someone be able to explain to me the following issue with Iphoto?
I ordered 8 same calendars for my soccer team and received them fine. Although a couple of pictures on it are a little off (out of focus). I need to order two more of the same calendars but when I go thru the process ireceive an error message saying:
"Unable to to assemble calendar" There is a problem with the photo with the file name "(Null)" The full resolution version of this photo either cannot be located or is corrupt. Please replace this photo or delete it from your calendar.
How can I fine this "corrupt" photo? How did it go thru with the first batch of calendars but won't go thru now?
Thank you for your help.

Apply the two fixes below in order as needed:
Fix #1
Launch iPhoto with the Command+Option keys held down and rebuild the library.
Since only one option can be run at a time start
with Option #4 and then #1 as needed.
Fix #2
Using iPhoto Library Manager to Rebuild Your iPhoto Library
1 - download iPhoto Library Manager and launch.
2 - click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
3 - Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option.
4 - In the next window name the new library and select the location you want it to be placed.
5 - Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments. However, books, calendars, cards and slideshows will be lost. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.
OT

I can not upgrade to quicktime 7.7.3 for windows vista. Error message says there is a problem with the program installer. Any clue as to how to get around this.

I can not download quicktime 7.7.3 for windows vista. The error message says that there is a problem with the windows installer. Any clues?

The error message says that there is a problem with the windows installer.
What's the precise text of the message, please? (There's a few different ones I can think of that you might be getting.)

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