Re: No Instance issue from WebPDFReports 1.0
Re: No Instance issue from WebPDFReports 1.0
- Subject: Re: No Instance issue from WebPDFReports 1.0
- From: "Koksiong" <email@hidden>
- Date: Thu, 16 Feb 2006 17:29:21 +0800 (SGT)
- Importance: Normal
hi, i have tried many methods. but still failed...
rgds,
koksiong
> Hi, I have your same exact problem
> have you solved ? can you help me?
>
> Thanks very much
> Amedeo
>
> On 25/ott/05, at 04:56, Koksiong wrote:
>
>> hi, all
>>
>> thanks for advices, i tried to disabled the Caching enabled in the
>> Instance Settings, it seems solve the no instance problems. lol
>>
>> The first generation looks alright, but following generation
>> sometimes, it
>> gives the Session timeout error. in the instance setting , the
>> settings is
>> -WOSessionTimeOut 3600. it should not timeout since it's 3600, or
>> is there
>> any action might trigger this error?
>>
>> any idea?
>>
>>
>> rgds,
>> koksiong
>>
>>> Just to let you know of our experience with pdf generation and memory
>>> problems ...
>>> We use 'apache fop' and/or 'ujac' for pdf generation, when the report
>>> is too big to be generated in memory, we instead start the task in
>>> another vm like :
>>> ...
>>> NSBundle bundle = NSBundle.bundleForClass(UtilitairesFOXML.class);
>>> URL url = bundle.pathURLForResourcePath("Java/FOXML.jar");
>>> String selfJar = url.getPath();
>>> String cmd = "/usr/bin/java -classpath "+ selfJar + "
>>> org.apache.fop.apps.Fop -fo "+ foName +" -pdf "+ pdfName;
>>> Process p = Runtime.getRuntime().exec(cmd);
>>> ...
>>>
>>> We have no memory problem of generating the report definition (xsl-
>>> fo)
>>> from our wocomponent, but transforming the definition to pdf in
>>> memory
>>> can cause problem on big report (at least with current version of
>>> apache's fop). That's why we had to do it externaly.
>>>
>>> - jfv
>>>
>>>
>>> Le 05-10-24, à 13:58, Chuck Hill a écrit :
>>>
>>>>
>>>> On Oct 23, 2005, at 9:50 PM, Koksiong wrote:
>>>>
>>>>> hi,
>>>>>
>>>>> i am facing a critical problem using WebPDFReports 1.0.
>>>>>
>>>>> i used to generate quite a number of pdf daily, for each
>>>>> generation,
>>>>> it
>>>>> may contain up to 80 pages. for the first generation, it always
>>>>> works, but
>>>>> if i continue to generate the pdf , it just gives No Instance
>>>>> error.
>>>>> Once
>>>>> it occurs, i need to restart the webobject instance.
>>>>>
>>>> Sounds like the application is running out of memory. Check the
>>>> logs
>>>> for "OutOfMemory".
>>>>
>>>>
>>>>> the other modules are working except the pdf component. is it
>>>>> because
>>>>> the
>>>>> number of pages generated is too big ?
>>>>>
>>>> The problem is at least related to that. I can see from your code
>>>> below that the response is getting saved in the page cache, that
>>>> means
>>>> it will hang around consuming memory for quite some time. You will
>>>> need to return it in some other manner or override
>>>> Session.savePage()
>>>> to avoid this going into the page cache. I would also suggest
>>>> creating an EC on the PDF page and discarding it after use.
>>>>
>>>>
>>>> Chuck
>>>>
>>>>> please advice.
>>>>>
>>>>> rgds,
>>>>> koksiong
>>>>>
>>>>> ps: the following are the code
>>>>>
>>>>> public WOActionResults goPrintAction()
>>>>> {
>>>>> generateVehicleDeliveryListPDF nextPage =
>>>>> (generateVehicleDeliveryListPDF)pageWithName
>>>>> ("generateVehicleDeliveryL
>>>>> istPDF");
>>>>> nextPage.setEc(ec);
>>>>>
>>>>> nextPage.setATransactionArray(aTransactionArray.mutableClone());
>>>>> PDFPage pdfPage = (PDFPage)pageWithName("PDFPage");
>>>>> HTML2PDFConvertor pdfConvertor = new
>>>>> HTML2PDFConvertor();
>>>>> pdfConvertor.createDocument("US
>>>>> Letter",HTML2PDFConvertor.LandscapeOrientation);
>>>>> pdfConvertor.setPaperSize(new PaperSize(792,612));
>>>>> pdfConvertor.setTopMargin(5);
>>>>> pdfConvertor.setLeftMargin(5);
>>>>> pdfConvertor.setRightMargin(5);
>>>>> pdfConvertor.setBottomMargin(5);
>>>>> pdfConvertor.setPrintsVerticallyCentered(false);
>>>>> pdfPage.setConvertor(pdfConvertor);
>>>>>
>>>>> pdfPage.appendComponent(nextPage);
>>>>>
>>>>> return pdfPage;
>>>>> }
>>>>>
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