WebService OutOfMemory Exception

We're having random problems when downloading files using the MediaBin Webservice 4.5 SP2. When requesting some fairly large images (about 80 MB before the retrieval task and 14 MB after) I frequently receive the error below. The MediaBin server will process the request fine (the recent history shows a successful transaction without any messages) however I can't retrieve the file via my application and the stack trace reports this error. I've noticed that when I stop and start the aspnet_wp.exe process on the MediaBin Server (Windows 2000) the problem is temporally resolved. Meaning, the same images that were failing because of this error are now being processed successfully by my application. I've also noticed that the aspnet_wp.exe varies greatly in the amount of memory it consumes. Shortly after restarting the process it is uses about 40 MB and after a few requests can grow to over 600 MB. My question is do you know of any issues that can cause these memory exceptions to be thrown?

Thanks,
Donovan
E&J Gallo Winery

faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server
faultSubcode:
faultString: Server unavailable, please try later --> Exception of type System.OutOfMemoryException was thrown.
faultActor: http://mediabin/MediaBinWebService/MediaBinServer.asmx
faultNode:
faultDetail:
{http://xml.apache.org/axis/}stackTrace: AxisFault
faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server
faultSubcode:
faultString: Server unavailable, please try later --> Exception of type System.OutOfMemoryException was thrown.
faultActor: http://mediabin/MediaBinWebService/MediaBinServer.asmx
faultNode:
faultDetail:

Server unavailable, please try later --> Exception of type System.OutOfMemoryException was thrown.
at org.apache.axis.message.SOAPFaultBuilder.createFault(SOAPFaultBuilder.java:260)
at org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.java:169)
at org.apache.axis.encoding.DeserializationContextImpl.endElement(DeserializationContextImpl.java:1015)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at javax.xml.parsers.SAXParser.parse(Unknown Source)
at org.apache.axis.encoding.DeserializationContextImpl.parse(DeserializationContextImpl.java:242)
at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:538)
at org.apache.axis.Message.getSOAPEnvelope(Message.java:376)
at org.apache.axis.client.Call.invokeEngine(Call.java:2583)
at org.apache.axis.client.Call.invoke(Call.java:2553)
at org.apache.axis.client.Call.invoke(Call.java:2248)
at org.apache.axis.client.Call.invoke(Call.java:2171)
at org.apache.axis.client.Call.invoke(Call.java:1691)
at com.mediabin.www.MediaBinServerSoapStub.retrieveFile(MediaBinServerSoapStub.java:5466)
at com.ejgallo.webservice.imagerepository.connectionpool.PooledSession.retrieveFile(PooledSession.java:397)
at com.ejgallo.webservice.imagerepository.download.ArchiveProcessor.requestImage(ArchiveProcessor.java:437)
at com.ejgallo.webservice.imagerepository.download.ArchiveProcessor.run(ArchiveProcessor.java:294)
at java.lang.Thread.run(Thread.java:534)

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Comments

msnider

The retrieveFile method returns the file as a Base64 encoded blob within the SOAP envelope and since the Axis library loads the entire envelope before it can parse, you will use a lot of memory. The solution is to use one of the more efficient retrieveFile methods that do not load the file into memory...such as retrieveFile_URL or retrieveFile_UNC.

Mark

dvarnell

I've taken your advice and have rewritten the file retrieval code, now utilizing the retrieveFile_URL service instead of the retrieveFile service. I used an example that I saw on this forum and everything worked great after the rewrite in my local environment (using the IBM Rational 6.0 IDE.) However after deploying it on my Websphere 5.0 application server the same code produces the error below. Both my local environment and the Websphere deployed code are utilizing the same Mediabin Server and Web Services. Just looking for some ideas why I'm getting the error in one environment and not the other and what I can do to prevent the error.

Thanks,
Donovan

java.io.IOException: Server returned HTTP response code: 401 for URL: http://mod2kas004/mediabinwebservice/transfer/mbdir_963792043/bsr%20rosso.jpg

[5/9/06 16:40:51:285 PDT] 11e2524 SystemErr R at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:791)
[5/9/06 16:40:51:285 PDT] 11e2524 SystemErr R at java.net.URL.openStream(URL.java:913)
[5/9/06 16:40:51:285 PDT] 11e2524 SystemErr R at com.ejgallo.webservice.imagerepository.download.ArchiveProcessor.RetrieveFile(ArchiveProcessor.java:1132)
[5/9/06 16:40:51:286 PDT] 11e2524 SystemErr R at com.ejgallo.webservice.imagerepository.download.ArchiveProcessor.requestImage(ArchiveProcessor.java:470)
[5/9/06 16:40:51:286 PDT] 11e2524 SystemErr R at com.ejgallo.webservice.imagerepository.download.ArchiveProcessor.run(ArchiveProcessor.java:297)
[5/9/06 16:40:51:286 PDT] 11e2524 SystemErr R at java.lang.Thread.run(Thread.java:534)

msnider

When you access the URL, are you specifying the same user credentials as the user that you logged in as? The staging directory is secured and does not allow Anonymous access (although you could allow anonymous access if you wanted to)

Mark

dvarnell

I went ahead and modified the IIS settings to "Allow Anonymous" and I was able to get by this error.