How change Collection Frequency-Repeat Every in Collection Schedule ?

Hi! How set 1 minutes, or 10 seconds in
Database Instance: DB > Metric and Policy Settings ?
I set 1 minutes, and got this warning:
Warning
The repeat interval set is very low. This will cause additional load on the agent and the repository database. To proceed with the current repeat interval, press
Continue after completing your changes .
Thanks!

Your question led me to discover something interesting ... if you have a Mac and use iCloud calendars.
Randers4's answer is absolutely correct. But if you have a Mac and use an iCloud calendar, you can in fact set up an "every 4 weeks" event on the Mac and have that carry over to your iPhone. Simply open the even in your Mac's calendar, and choose a "custom" repeat interval. You can choose "every 4 weeks" there. In fact, I've just tried it and it does carry over to your iPhone.

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How to refresh parents externally changed collection of child objects

Hello,
we have an external process which updates the database independently from TopLink. We receive a notification whenever objects are created or deleted.
We have an object A that contains a collection of B's. When a B is inserted or deleted in the database, we get an insert- or delete-event for B. But we also need to refresh the object A to reflect the changed collection in our object model.
Is there any TopLink mechanism we can use to do this automatically? Otherwise we will have to manually find all the objects that reference the inserted or deleted B and refresh them as well.
We are grateful for any suggestions.

Hello Don,
thank you for your answer. We have the back reference and at the moment follow the approach you suggested. But as a consequence we have to handle each class B individually, i. e. given our knowledge of the object modell we have to hand-code for each class B a method that refreshes all the objects referring to it. Since the necessary information to do this seems to be available in the TopLink descriptors we were wondering whether there exists a more generic way. E. g. we thought about analyzing B's descriptor and follow all one-to-one mappings to the referred objects and find out if their descriptors in turn contain a collection mapping to B in which case we would refresh them. Unfortunately that won't work in case of n:m mappings where no back reference exists.
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How to set collection schedule for metric thresholds

Greetings All,
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
Windows Server 2008 R2Please know that I am a newbie when in regards Enterprise Manager (any version).
I am trying to use EM-Database Control version that was installed when I installed Oracle.
I am trying to activate e-mail notification when tablespace(s) usage exceeds set thresholds. Specifically the locally managed tablespaces.
I found the Metric Thresholds page, and I found the “Tablespace Space Used (%)” metric. Note this is NOT the “(dictionary managed)” metric.
I do have e-mail and credential information established.
I found where you can identify a SQL script to be executed for corrective actions for the warning and critical thresholds. However I don’t want to execute any corrective action, I am just interested in the e-mail notification.
I know I could setup a SQL script that would send an e-mail but from my reading/research I believe that e-mail notification should automatically take place so long as e-mail and credential information has been established, which has been established.
My question is:
I can find now way to set a Collection Schedule. The dictionary managed tablespace metric has a collection schedule link (i.e. Every 15 Minutes), but the non-dictionary managed tablespace metric(s) has none.
Clicking the edit icon(s) provides no way of setting the collection schedule.
Where/how do I establish a Collection Schedule for this metric?
Thanks for your time,
Bob

Hi Bob,
With Grid/Cloud Control you can modify the collection frequency (interval) for the Tablespace Space Used (%) metric for locally managed tablespaces; however, you cannot do the same in DB control.
That being said, alerts from the metric are server-generated alerts, which are generated from the monitored database target. When the space used percentage exceeds the Warning or Critical threshold, assuming you have subscribed to an appropriate notification rule for email notification, you should receive an email notification in about 1 minute or so.
The following doc may help explain more about server -generated alerts:
http://docs.oracle.com/cd/B28359_01/server.111/b28310/monitoring001.htm#CIHCAGAJ
Regards,
- Loc

How to change the frequency of pulse train on the fly using an array of values?

Hi all!
First I want to thank U for the great job you are doing for this forum.
Iam still busy trying to control a stepper motor, by sending pulses from my E-series 6024 to a compumotor s6- stepper Driver. I've managed to get it working. I desperately need to control the motor using the values from an array. I believe we can use two approaches for that:
1st - I can get an array of the "numbers of pulses". Each element must run for 10 milliseconds. Using that we can calculate the array of frequencies to send the number of pulses within 10 milliseconds for each specific element. Could we use the arrays of "number of pulses" and frequencies in a "finite pulse train " and up
date with each element every 10 millisecond?
2nd - Or Could we use of the frequency array in a "continuous pulse train vi" and update it every 10 milliseconds?
Please note that I must use the values as they are.
Can someone please built a good example for me? Your help will be appreciated.
Regards
Chris
Attachments:
number_of_steps.txt ‏17 KB
frequency.txt ‏15 KB

Tiano,
I will try to better explain the paragraph on LabVIEW. The original paragraph reads ...
"While in a loop for continuous pulse train generation, make two calls to Counter Set Attribute.vi to set the values for "pulse spec 1" (constant 14) and "pulse spec 2" (constant 15). Following these calls you would make a call to Counter Control.vi with the control code set to "switch cycle" (constant 7). The attached LabVIEW programs demonstrate this flow."
You can make two calls to Counter Set Attribute or you can make a call to Set Pulse Specs which, if you open this VI, you will see that it is just making two calls to Counter Set Attribute. What you are doing with the Counter Set Attribute VIs is setting two registers called "pulse s
pec 1" and "pulse spec 2". These two registers are used to configure the frequency and duty cycle of your output frequency.
The example program which is attached to this Knowledge Base demonstrates how to change the frequency of a continuous generation on the fly. Why continuous? Because changing the frequency of a finite train would be easy. When the train completes it's finite generation you would just change the frequency and run a finite train again. You would not care about the time delay due to reconfiguration of the counter.
If you would like to change the frequency of the pulse train using a knob, this functionality will have to be added in the while loop. The while loop will be continuously checking for the new value of the knob and using the knob value to set the pulse specs.
LabVIEW is a language, and as with learning all new languages (spoken or programatic) there is a lot of learning to be accomplished. The great thing is that LabVIEW is much easier than mo
st languages and the learning curve should be much smaller. Don't fret, you'll be an expert before you know it. Especially since you're tackling a challenging first project.
Regards,
Justin Britten

How to control keithley 6221 just to change the frequency of a wave at intervals .

Hello,
I'm very new to LabVIEW. I'm trying to control keithley 6221 using RS-232.
What I want to do is just to change the frequency of a sine wave at every 30 seconds, and the series of the required frequencies could be input at the beginning.
Does anybody know how can I do it?
I'll be glad to get any help.
Thanks!

NI does not have a LabVIEW driver for that instrument but you might want to check with Keithley.
On the main Instrument Driver Network page are links on developing an instrument driver. There is a wizard (Tools>Instrumentation>Create Instrument Driver Project) as well as the Instrument I/O Assistant. You will need the instrument manual to look up the programming commands. There are example VIs for serial communication.

How to avoid delay during analog output generation by changing its frequency?

Windows XP
LabVIEW 7.1
PCI-6036E + BNC-2120
Hi,
I am going to create a vi to generate an engine speed sensor signal (a simple square wave with specific missed pulses, in my case 58 pulses “teeth” and 2 missed pulses “missed teeth”) as an analog output but in addition give me the opportunity to control parameters for example frequency online to simulate the engine speed changes during running that vi. For this purpose I have started with “Continuous Generation.vi” which is available in NI Example Finder under the following path:
Hardware Input and Output > Traditional DAQ > Analog Output > Continuous Generation.vi
Then I modified it towards above mentioned goal, all related vi s are attached. The main vi is: "Motor Signal Generator_1.12.vi"
At the first try it looks that it works properly but when have a look on that more accurately with Oscilloscope (fortunately I have a good one: Agilent 54621A – 60 MHz, 200 Ms/s) obviously there is a gap (delay or Jitter) whenever I change the engine speed. It is also attached in Signal generation_problem report.doc file.
Note: Small gaps are OK and related to predefined missed teeth but the big one is happened during changing engine speed.
As far as I understand it is related to the time which case structure in AO C-GEN sub-vi needs for AO reconfiguration each time after changing the engine speed (update rate). How can I get rid of this delay or gap during signal generation and generating completely continuous signal?
I have to mention that obviously I changed the frequency by changing the update rate. The other possibility is to change the number of updates in one period (refer to "generate arb frequency.vi" in NI site: http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E48F56A4E034080020E74861) which resulted in no delay however then I can not change the frequency continuously but step by step (for example jump from 5Khz to 2.5KHz immediately) and this can not pass to my application.
Any hint is appreciated.
regards
Attachments:
Signal_generation_NIsupport.zip ‏81 KB

Hi Roozbeh,
The following example will allow you to vary the pulse train frequency during run time.
Thanks,
Lesley Y.
Attachments:
GenDigPulseTrain-ChangingSpecs.vi ‏75 KB

How to collect to different files into one message

Hi,
I have the following scenario:
Two (5Mb) Files with different file structures each ->
XI (transform and generate a single structure record) ->
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Let suppose file1 has order headers - one order per line -and file2 has the corresponding order items - one item per line, e.g;
File 1
OrderNr Description
1        A
2        B
3        C
File 2
OrderNr   ItemNr   MaterialCode ....
1         1        111
1         2        222
1         3        555
2         1        888
2         2        777
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Imagine I want to insert a record in the database for
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1        1      A           111
1        2      A           222
1        3      A           555
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I need to collect the two different files with two different file structures into the same message. Although I have read about the subject I am not sure about how to do it using BPM because there isn't any field I could use to correlate file1 with file2 - I can only correlate a record of file1 with several records of file2. I simply know that the two files will be available in a specific directory once a day at 06:00AM.
First question is:
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Like this
File1 -> XI -> INSERT DATA XI ZDB1 (via ABAP Proxy or RFC)
File2 -> XI -> INSERT DATA XI ZDB2 (via ABAP Proxy or RFC)
Them I could use an event to check when the two tables have all the data from both files. I could then combine the data from the two tables and start another integration process like this
XI SERVER (ABAP Proxy) -> XI Integration Server -> Third-party (JDBC)
But this way I would have to code the hole data conversion which is not a good idea from the perspective of XI (EAI/Broker).
Maybe I sould use BPM. But how?
Futhermore:
Is BPM performant enough (we are talking about files with thousand of records)?
Thanks in advance
Diz

Hi,
for N:1 Multimapping you have to use BPM.
After going through this weblog you will be quite familiar with how to collect 2 messages into one message.
/people/pooja.pandey/blog/2005/07/27/idocs-multiple-types-collection-in-bpm
Steps:
1. Create a abstract/ inbound / outbound interfaces. (in your case 3 /1/2).
2. Perform 2:1 Multimapping.
You can specify more than one message in either side.
Just go to message tab in MM.
3. Now follow the blog and you will get a output in the form of abstract interface.
4. Define JDBC reciever Channel as usual.
Your database will be updated.
Just try this out.
Regards
Piyush

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How to change the frequency of a finite/continuous pulse train in the program?

Hello!...
I am trying to modify the Finite pulse train vi example to change the frequency with respect of a ratio (1:2) of the data of a spreadsheet file as they are read one by one.
My aim is to get the pulse train to clock a stepper motor controller, in such way that the speed of the motor increases when the data of the spreadsheet increases and vice-versa.
I think that if I want to get the clock to change its speed, I must change the frequency and if I want it to increase/decrease like the data in the spreadsheet, I must tell the frequency that the data is increasing or decreasing in value.
Obviously the program must do it while it is running
Can anyone see wh
ere I have gone wrong and/or give any suggestions?
I have attached my vi and the spreadsheet file.
Thanks
Tiano
Attachments:
My_VI.vi ‏99 KB
wave.txt ‏18 KB

Tiano,
Try to build the pieces of the program separately. Get a VI running that reads the spreadsheet and reports the data in it sequentially in an indicator (forget about the pulse generation at this time). This indicator will be wired to the frequency input of the pulse generator VI.
You have read the data and have a transposed array. Now you must learn to use the Index Array function in a For Loop to extract the data sequentially. You will wire the increment output [i] of the For Loop into Index Array to shift from one data point to the next.
You have a For Loop with no constant wired to [N] to tell it how many times to run. If you use Array Size to extract the number of entries in the spreadsheet data, this can be the constan
t that tells the For Loop how many times to run.
You are using the Tab Control in a way I have never seen before (I don't think it will work this way either. Tab Control is for presenting and hiding controls, indicators, labels, etc. on the front panel, before running the VI. They are not used to control the program functionality itself. Typically you would use a Boolean to choose between 2 options for a Case Structure.
You can also change the path constant which selects the spreadsheet file into a control. This would allow you to browse for any file you want and eleiminate the need for the Case Structure altogether.
Mike

ICal keeps sending email notifications from all agenda items from the last 2 years. After laptop start up this action is repeated every hour. How can I stop these 300 emails coming in every hour?

iCal keeps sending email notifications of all agenda items from the last 2 years (then I bought my laptop). After laptop start up this action is repeated every hour. How can I stop these >300 emails coming in every hour?

Hi,
We have rolled out a fix for this issue.
Please log off and log back in to your machine and the issue should be resolved automatically. In case that does not work, please manually run the msi installer posted here (may require reboot).
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How to change the frequency of a finite pulse train?

Hi all? I Know I’ve asked once a similar question, but I need a better answer. I would like some ideas or examples on how to modify the example in LV; "Finite Pulse Train Generation - Intermediate for AM9513-Based Devices",so that the frequency can be changed while the VI is executing.
Will i have any problem with I use this VI in a DAQ-STC-Based Devices(E-series)?

Tiano,
I will try to better explain the paragraph on LabVIEW. The original paragraph reads ...
"While in a loop for continuous pulse train generation, make two calls to Counter Set Attribute.vi to set the values for "pulse spec 1" (constant 14) and "pulse spec 2" (constant 15). Following these calls you would make a call to Counter Control.vi with the control code set to "switch cycle" (constant 7). The attached LabVIEW programs demonstrate this flow."
You can make two calls to Counter Set Attribute or you can make a call to Set Pulse Specs which, if you open this VI, you will see that it is just making two calls to Counter Set Attribute. What you are doing with the Counter Set Attribute VIs is setting two registers called "pulse s
pec 1" and "pulse spec 2". These two registers are used to configure the frequency and duty cycle of your output frequency.
The example program which is attached to this Knowledge Base demonstrates how to change the frequency of a continuous generation on the fly. Why continuous? Because changing the frequency of a finite train would be easy. When the train completes it's finite generation you would just change the frequency and run a finite train again. You would not care about the time delay due to reconfiguration of the counter.
If you would like to change the frequency of the pulse train using a knob, this functionality will have to be added in the while loop. The while loop will be continuously checking for the new value of the knob and using the knob value to set the pulse specs.
LabVIEW is a language, and as with learning all new languages (spoken or programatic) there is a lot of learning to be accomplished. The great thing is that LabVIEW is much easier than mo
st languages and the learning curve should be much smaller. Don't fret, you'll be an expert before you know it. Especially since you're tackling a challenging first project.
Regards,
Justin Britten

How change Collection Frequency-Repeat Every in Collection Schedule ?

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