Selecting large amounts of data

I'm selecting a large amount of data from a database
and put the data
into an object file. For some reason the process dies
halfway through with an OutOfMemoryException. Any
Ideas?Like...you are running out of memory?
Have you increased the heap size?
What does "large" mean? 100k or 100gig?
>
Secondly, does anyone know how to insert carriage
returns with a
prepared statement?I suppose you mean how to insert one into a text field.
Do you already have it in the string? If not then you use "\\n" or '\n'.
If you do have it in the string and you inserted it without error then how do you know it isn't already in the database?

Similar Messages

Regarding TXT File data truncation due to large amount of data

Hi Guys,
I am downloading data to txt.file in background.I am getting truncation of the records due to large amount of data. If it is less data it works good.
I have checked the Internal table SIZE for this and anywhy i have declared in OCCURS 0 only.
So please help me to find out what may this reason.I am confuced is there any limitation for TXT file??
Please help me guys..
Thanks in advance..
Prabhu.R

Hi Rakesh,
two ways.
1. Ask ur BASIS team to increase the memory level.
2. Check the PACKAGE SIZE option of select statement
Here u won't select all the data once but in packets of specified size. So get the packets of data and process.
Just press F1 on package size. That explanation will be enough to proceed further.
Thanks,
Vinod.

Best way to pass large amounts of data to subroutines?

I'm writing a program with a large amount of data, around 900 variables. What is the best way for me to pass parts of this data to different subroutines? I have a main loop on a PXI RT Controller that is controlling hydraulic cylinders and the loop needs to be 1ms or better. How on earth should I pass 900 variables through a loop and keep it at 1ms? One large cluster?? Several smaller clusters?? Local Variables? Global Variables?? Help me please!!!

My suggestion, similar to Altenbach and Matt above, is to use a Functional Global Variable (FGV) and use a 1D array of 900 values to store the data in the FGV. You can retrieve individual data items from the FGV by passing in the index of the desired variable and the FGV returns the value from the array. Instead of passing in an index you could also use a TypeDef'd Enum with all of your variables as element of the Enum, which will allow you to place the Enum constant on the diagram and make selecting variables, as well as reading the diagram, simpler.
My group is developing a LabVIEW component/example code with this functionality that we plan to publish on DevZone in a month or two.
The attached RTF file shows the core piece of this implementation. This VI off course is non-reentrant. The Init case could be changed to allocate the internal 1D array as part of this VI rather than passing it from another VI.
Message Edited by Christian L on 01-31-2007 12:00 PM
Christian Loew, CLA
Principal Systems Engineer, National Instruments
Please tip your answer providers with kudos.
Any attached Code is provided As Is. It has not been tested or validated as a product, for use in a deployed application or system,
or for use in hazardous environments. You assume all risks for use of the Code and use of the Code is subject
to the Sample Code License Terms which can be found at: http://ni.com/samplecodelicense
Attachments:
CVT_Double_MemBlock.rtf ‏309 KB

Deleting large amounts of data

All,
I have several tables that have about 1 million plus rows of historical data that is no longer needed and I am considering deleting the data. I have heard that deleting the data will actually slow down performance as it will mess up the indexing, is this true? What if I recalculate statistics after deleting the data? In general, I am looking for advice what is best practices for deleting large amounts of data from tables.
For everyones reference I am running Oracle 9.2.0.1.0 on Solaris 9. Thanks in advance for the advice.
Thanks in advance!
Ron

Another problem with delete is that it generates a vast amount of redo log (and archived logs) information . The better way to get rid of the unneeded data would be to use TRUNCATE command:
http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96540/statements_107a.htm#2067573
The problem with truncate that it removes all the data from the table. In order to save some data from the table you can do next thing:
1. create another_table as select * from <main_table> where <data you want to keep clause>
2. save the indexes, constraints, trigger definitions, grants from the main_table
3. drop the main table
4. rename <stage_table> to <main_table>.
5. recreate indexes, constraints and triggers.
Another method is to use partitioning to partition the data based on the key (you've mentioned "historical" - the key could be some date column). Then you can drop the historical data partitions when you need it.
As far as your question about recalculating the statistics - it will not release the storage allocated for index. You'll need to execute ALTER INDEX <index_name> REBUILD :
http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96540/statements_18a.htm
Mike

How can I copy large amount of data between two HD ?

Hello !
Which command could I user to copy large amount of data between two hard disk drives ?
How Lion identify the disk drives when you want to write some script, for example in Windows I sue
Robocopy D:\folder source\Files E:\folder destination
I just want to copy files and if the files/folders exist in destination the files should be overwritted.
Help please, I bougth my first MAC 4 days ago.
Thanks !

Select the files/folders on one HD and drag & drop onto the other HD. The copied ones will overwrite anything with the same names.
Since you're a newcomer to the Mac, see these:
Switching from Windows to Mac OS X,
Basic Tutorials on using a Mac,
Mac 101: Mac Essentials,
Mac OS X keyboard shortcuts,
Anatomy of a Mac,
MacTips,
Switching to Mac Superguide, and
Switching to the Mac: The Missing Manual,
Snow Leopard Edition.&
Additionally, *Texas Mac Man* recommends:
Quick Assist,
Welcome to the Switch To A Mac Guides,
Take Control E-books, and
A guide for switching to a Mac.

Large Amount of Data in JSF

Hello,
I am using the Table Group component for displaying data in my application designed in Java Studio Creator.
I have enabled paging on the component. I use CachedRowSet on the bean for the page for getting the data. This works very well at the moment in my development environment. At the moment I am testing on small amount of data.
I was wondering how does this component perform with very large amounts of data (>75,000 rows). I noticed that there is a button available for users to retrieve all the rows. So I was wondering apart from that instance, when viewing in a paged mode does the component get all the results from the database everytime ?
Which component would be best suited for displaying large amounts of data in a table format?
Thanks In Advance!!

Thanks for your reply. The table control that I use does have paging as a feature and I have enabled it. It still takes time to load the data initially.
I wonder if it is got to do with the logic of paging. How do you specify which set of 20 records to extract from SQL.
Thanks for your help!!

Open Large amount of data

Hi
I have a file on application server in .dat format, it contains large amount of data may be 2 million of records or more, I need to open the file to check the record count, is there any software or any option to open the file, I have tried opening with Notepad, excel .... it gives error..
please let me know
Thanks

Hi,
Try this..
Go to AL11..
Go to the file directory..Then in the file there will be field called length..which is the total length of the file in characters..
If you know the length of a single line..
Divide the length of the file by the length of single line..I believe you will get the number of records..
Thanks,
Naren

Bex Report Designer - Large amount of data issue

Hi Experts,
I am trying to execute (on Portal) report made in BEx Report Designer, with about 30 000 pages, and the only thing I am getting is a blank page. Everything works fine at about 3000 pages. Do I need to set something to allow processing such large amount of data?
Regards
Vladimir

Hi Sauro,
I have not seen this behavior, but it has been a while since I tried to send an input schedule that large. I think the last time was on a BPC NW 7.0 SP06 system and it worked OK. If you are on a recent support package, then you should search for relevant notes (none come to mind for me, but searching yourself is always a good idea) and if you don't find one then you should open a support message with SAP, with very specific instructions for recreating the problem from a clean input-schedule.
Good luck,
Ethan

Advice needed on how to keep large amounts of data

Hi guys,
Im not sure whats the best way is to make large amounts of data available to my android app on the local device.
For example records of food ingredients, in the 100's?
I have read and successfully created .db's using this tutorial.
http://help.adobe.com/en_US/AIR/1.5/devappsflex/WS5b3ccc516d4fbf351e63e3d118666ade46-7d49. html
However to populate the database I use flash? So this kind of defeats the purpose of it. No point in me shifting a massive array of data from flash to a sql database, when I could access the data direct from the as3 array?
So maybe I could create the .db with an external program? but then how would I include that .db in the apk file and then deploy it to users android device.
Or maybe I create a as3 class with an xml object init and use that as a means of data storage?
Any advice would be appreciated

You can use any means you like to populate your SQLite database, including using external programs, (temporarily) embedding a text file with SQL statements, executing some SQL from AS3 code etc etc.
Once you have populated your db, deploy it with your project:
http://chrisgriffith.wordpress.com/2011/01/11/understanding-bundled-sqlite-databases-in-ai r-for-mobile/
Cheers, - Jon -

Error in Generating reports with large amount of data using OBIR

Hi all,
we hve integrated OBIR (Oracle BI Reporting) with OIM (Oracle Identity management) to generate the custom reports. Some of the custom reports contain a large amount of data (approx 80-90K rows with 7-8 columns) and the query of these reports basically use the audit tables and resource form tables primarily. Now when we try to generate the report, it is working fine with HTML where report directly generate on console but the same report when we tried to generate and save in pdf or Excel it gave up with the following error.
[120509_133712190][][STATEMENT] Generating page [1314]
[120509_133712193][][STATEMENT] Phase2 time used: 3ms
[120509_133712193][][STATEMENT] Total time used: 41269ms for processing XSL-FO
[120509_133712846][oracle.apps.xdo.common.font.FontFactory][STATEMENT] type1.Helvetica closed.
[120509_133712846][oracle.apps.xdo.common.font.FontFactory][STATEMENT] type1.Times-Roman closed.
[120509_133712848][][PROCEDURE] FO+Gen time used: 41924 msecs
[120509_133712848][oracle.apps.xdo.template.FOProcessor][STATEMENT] clearInputs(Object) is called.
[120509_133712850][oracle.apps.xdo.template.FOProcessor][STATEMENT] clearInputs(Object) done. All inputs are cleared.
[120509_133712850][oracle.apps.xdo.template.FOProcessor][STATEMENT] End Memory: max=496MB, total=496MB, free=121MB
[120509_133818606][][EXCEPTION] java.net.SocketException: Socket closed
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:99)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at weblogic.servlet.internal.ChunkOutput.writeChunkTransfer(ChunkOutput.java:525)
at weblogic.servlet.internal.ChunkOutput.writeChunks(ChunkOutput.java:504)
at weblogic.servlet.internal.ChunkOutput.flush(ChunkOutput.java:382)
at weblogic.servlet.internal.ChunkOutput.checkForFlush(ChunkOutput.java:469)
at weblogic.servlet.internal.ChunkOutput.write(ChunkOutput.java:304)
at weblogic.servlet.internal.ChunkOutputWrapper.write(ChunkOutputWrapper.java:139)
at weblogic.servlet.internal.ServletOutputStreamImpl.write(ServletOutputStreamImpl.java:169)
at java.io.BufferedOutputStream.write(BufferedOutputStream.java:105)
at oracle.apps.xdo.servlet.util.IOUtil.readWrite(IOUtil.java:47)
at oracle.apps.xdo.servlet.CoreProcessor.process(CoreProcessor.java:280)
at oracle.apps.xdo.servlet.CoreProcessor.generateDocument(CoreProcessor.java:82)
at oracle.apps.xdo.servlet.ReportImpl.renderBodyHTTP(ReportImpl.java:562)
at oracle.apps.xdo.servlet.ReportImpl.renderReportBodyHTTP(ReportImpl.java:265)
at oracle.apps.xdo.servlet.XDOServlet.writeReport(XDOServlet.java:270)
at oracle.apps.xdo.servlet.XDOServlet.writeReport(XDOServlet.java:250)
at oracle.apps.xdo.servlet.XDOServlet.doGet(XDOServlet.java:178)
at oracle.apps.xdo.servlet.XDOServlet.doPost(XDOServlet.java:201)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at oracle.apps.xdo.servlet.security.SecurityFilter.doFilter(SecurityFilter.java:97)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3496)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(Unknown Source)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
It seems where the querry processing is taking some time we are facing this issue.Do i need to perform any additional configuration to generate such reports?

java.net.SocketException: Socket closed
     at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:99)
     at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
     at weblogic.servlet.internal.ChunkOutput.writeChunkTransfer(ChunkOutput.java:525)
     at weblogic.servlet.internal.ChunkOutput.writeChunks(ChunkOutput.java:504)
     at weblogic.servlet.internal.ChunkOutput.flush(ChunkOutput.java:382)
     at weblogic.servlet.internal.CharsetChunkOutput.flush(CharsetChunkOutput.java:249)
     at weblogic.servlet.internal.ChunkOutput.checkForFlush(ChunkOutput.java:469)
     at weblogic.servlet.internal.CharsetChunkOutput.implWrite(CharsetChunkOutput.java:396)
     at weblogic.servlet.internal.CharsetChunkOutput.write(CharsetChunkOutput.java:198)
     at weblogic.servlet.internal.ChunkOutputWrapper.write(ChunkOutputWrapper.java:139)
     at weblogic.servlet.internal.ServletOutputStreamImpl.write(ServletOutputStreamImpl.java:169)
     at com.tej.systemi.util.AroundData.copyStream(AroundData.java:311)
     at com.tej.systemi.client.servlet.servant.Newdownloadsingle.producePageData(Newdownloadsingle.java:108)
     at com.tej.systemi.client.servlet.servant.BaseViewController.serve(BaseViewController.java:542)
     at com.tej.systemi.client.servlet.FrontController.doRequest(FrontController.java:226)
     at com.tej.systemi.client.servlet.FrontController.doPost(FrontController.java:128)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3498)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(Unknown Source)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:17
(Please help finding a solution in this issue its in production and we need to ASAP)
Thanks in Advance
Edited by: 909601 on Jan 23, 2012 2:05 AM

With journaling, I have found that my computer is saving a large amount of data, logs of all the changes I make to files; how can I clean up these logs?

With journaling, I have found that my computer is saving a large amount of data, logs of all the changes I make to files; how can I clean up these logs?
For example, in Notes, I have written three notes; however if I click on 'All On My Mac' on the side bar, I see about 10 different versions of each note I make, it saves a version every time I add or delete a sentence.
I also noticed, that when I write an email, Mail saves about 10 or more draft versions before the final is sent.
I understand that all this journaling provides a level of security, and prevents data lost; but I was wondering, is there a function to clean up journal logs once in a while?
Thanks
Roz

Are you using Microsoft word? Microsoft thinks the users are idiots. They put up a lot of pointless messages that annoy & worry users. I have seen this message from Microsoft word. It's annoying.
As BDaqua points out...
When you copy information via edit > copy, command + c, edit > cut, or command +x, you place the information on the clipboard. When you paste information, edit > paste or command + v, you copy information from the clipboard to your data file.
If you edit > cut or command + x and you do not paste the information and you quite Word, you could be loosing information. Microsoft is very worried about this. When you quite Word, Microsoft checks if there is information on the clipboard & if so, Microsoft puts out this message.
You should be saving your work more than once a day. I'd save every 5 minutes. command + s does a save.
Robert

Looking for ideas for transferring large amounts of data between systems

Hello,
I am looking for ideas based on best practices for transferring Large Amounts of Data in and out of a Netweaver based application.
We have a new system we are developing in Netweaver that will utilize both the Java and ABAP stack, and will require integration with other SAP and 3rd Party Systems. It is a standalone product that doesn't share any form of data store with other systems.
We need to be able to support 10s of millions of records of tabular data coming in and out of our system.
Since we need to integrate with so many different systems, we are planning to use RFC for our primary interface in and out of the system. As it turns out RFC is not good at dealing with this large amount of data being pushed through a single call.
We have considered a number of possible ideas, however we are not very happy with any of them. I would like to see what the community has done in the past to solve problems like this as well as how SAP currently solves this problem in other applications like XI, BI, ERP, etc.

Primoz wrote:Do you use KDE (Dolphin) 4.6 RC or 4.5?
Also I've noticed that if i move / copy things with Dolphin they're substantially slower than if I use cp/mv. But cp/mv works fine for me...
Also run Dolphin from terminal to try and see what's the problem.
Hope that help at least a bit.
Could you explain why Dolphin should be slower? I'm not attacking you, I'm just asking.
Cause I thought that Dolphin is just a „little" wrapper around the cp/mv/cd/ls applications/commands.

Azure Cloud service fails when sent large amount of data

This is the error;
Exception in AZURE Call: An error occurred while receiving the HTTP response to http://xxxx.cloudapp.net/Service1.svc. This could be due to the service endpoint binding not using the HTTP protocol. This could also be due to an HTTP request context being
aborted by the server (possibly due to the service shutting down). See server logs for more details.
Calls with smaller amounts of data work fine. Large amounts of data cause this error.
How can I fix this??

Go to the web.config file, look for the <binding> that is being used for your service, and adjust the various parameters that limit the maximum length of the messages, such as
maxReceivedMessageSize.
http://msdn.microsoft.com/en-us/library/system.servicemodel.basichttpbinding.maxreceivedmessagesize(v=vs.100).aspx
Make sure that you specify a size that is large enough to accomodate the amount of data that you are sending (the default is 64Kb).
Note that even if you set a very large value here, you won't be able to go beyond the maximum request length that is configured in IIS. If I recall correctly, the default limit in IIS is 8 megabytes.

DSS problems when publishing large amount of data fast

Has anyone experienced problems when sending large amounts of data using the DSS. I have approximately 130 to 150 items that I send through the DSS to communicate between different parts of my application.
There are several loops publishing data. One publishes approximately 50 items in a rate of 50ms, another about 40 items with 100ms publishing rate.
I send a command to a subprogram (125ms) that reads and publishes the answer on a DSS URL (app 125 ms). So that is one item on DSS for about 250ms. But this data is not seen on my man GUI window that reads the DSS URL.
My questions are
1. Is there any limit in speed (frequency) for data publishing in DSS?
2. Can DSS be unstable if loaded to much?
3. Can I lose/miss data in any situation?
4. In the DSS Manager I have doubled the MaxItems and MaxConnections. How will this affect my system?
5. When I run my full application I have experienced the following error Fatal Internal Error : ”memory.ccp” , line 638. Can this be a result of my large application and the heavy load on DSS? (se attached picture)
Regards
Idriz Zogaj
Idriz "Minnet" Zogaj, M.Sc. Engineering Physics
Memory Profesional
direct: +46 (0) - 734 32 00 10
http://www.zogaj.se

LuI wrote:
>
> Hi all,
>
> I am frustrated on VISA serial comm. It looks so neat and its
> fantastic what it supposes to do for a develloper, but sometimes one
> runs into trouble very deep.
> I have an app where I have to read large amounts of data streamed by
> 13 µCs at 230kBaud. (They do not necessarily need to stream all at the
> same time.)
> I use either a Moxa multiport adapter C320 with 16 serial ports or -
> for test purposes - a Keyspan serial-2-USB adapter with 4 serial
> ports.
Does it work better if you use the serial port(s) on your motherboard?
If so, then get a better serial adapter. If not, look more closely at
VISA.
Some programs have some issues on serial adapters but run fine on a
regular serial port. We've had that problem recent
ly.
Best, Mark

Freeze when writing large amount of data to iPod through USB

I used to take backups of my PowerBook to my 60G iPod video. Backups are taken with tar in terminal directly to mounted iPod volume.
Now, every time I try to write a big amount of data to iPod (from MacBook Pro), the whole system freezes (mouse cursor moves, but nothing else can be done). When the USB-cable is pulled off, the system recovers and acts as it should. This problem happens every time a large amount of data is written to iPod.
The same iPod works perfectly (when backupping) in PowerBook and small amounts of data can be easily written to it (in MacBook Pro) without problems.
Does anyone else have the same problem? Any ideas why is this and how to resolve the issue?
MacBook Pro, 2.0Ghz, 100GB 7200RPM, 1GB Ram Mac OS X (10.4.5) IPod Video 60G connected through USB

Ex PC user...never had a problem.
Got a MacBook Pro last week...having the same issues...and this is now with an exchanged machine!
I've read elsewhere that it's something to do with the USB timing out. And if you get a new USB port and attach it (and it's powered separately), it should work. Kind of a bummer, but, those folks who tried it say it works.
Me, I can upload to Ipod piecemeal, manually...but even then, it sometimes freezes.
The good news is that once the Ipod is loaded, the problem shouldnt' happen. It's the large amounts of data.
Apple should DEFINITELY fix this though. Unbelievable.
MacBook Pro 2.0 Mac OS X (10.4.6)

Selecting large amounts of data

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