IV22075: PERFORMANCE IS SLOW FOR TRANSFORMATIONS WHERE THE RESULT IS A DO MRESULT WITH THE NODE UNSET.

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: Stack trace showing the performance hot spot:
          at java.io.File.exists(File.java:739)
          at
  sun.misc.URLClassPath$FileLoader.getResource(URLClassPath.java:1
  219)
          at
  sun.misc.URLClassPath$FileLoader.findResource(URLClassPath.java:
  1186)
          at
  sun.misc.URLClassPath.findResource(URLClassPath.java:250)
          at
  java.net.URLClassLoader$4.run(URLClassLoader.java:752)
          at
  java.security.AccessController.doPrivileged(AccessController.jav
  a:224)
          at
  java.net.URLClassLoader.findResource(URLClassLoader.java:749)
          at
  java.lang.ClassLoader.getResource(ClassLoader.java:444)
          at
  java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:511)
          at
  java.lang.ClassLoader.getSystemResourceAsStream(ClassLoader.java
  :611)
          at javax.xml.parsers.SecuritySupport$4.run(Unknown
  Source)
          at
  java.security.AccessController.doPrivileged(AccessController.jav
  a:202)
          at
  javax.xml.parsers.SecuritySupport.getResourceAsStream(Unknown
  Source)
          at
  javax.xml.parsers.FactoryFinder.findJarServiceProvider(Unknown
  Source)
          at javax.xml.parsers.FactoryFinder.find(Unknown Source)
          at
  javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown
  Source)
          at com.ibm.xtq.xslt.runtime.DOMBuilder.<init>(Unknown
  Source)
          at
  com.ibm.xtq.xslt.runtime.ConverterImpl.getInputSerializationHand
  ler(Unknown Source)
          at
  com.ibm.xtq.xslt.runtime.output.TransletOutputHandlerFactory.get
  SerializationHandler(Unknown Source)
          at
  com.ibm.xtq.xslt.jaxp.TransformerImpl.getOutputHandler(Unknown
  Source)
          at
  com.ibm.xtq.xslt.jaxp.TransformerHandlerImpl.setResult(Unknown
  Source)
          at
  com.sun.xml.internal.bind.v2.runtime.unmarshaller.DomLoader$Stat
  e.<init>(DomLoader.java:63)
          at
  com.sun.xml.internal.bind.v2.runtime.unmarshaller.DomLoader.star
  tElement(DomLoader.java:102)
          at
  com.sun.xml.internal.bind.v2.runtime.unmarshaller.ProxyLoader.st
  artElement(ProxyLoader.java:44)
          at
  com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingC
  ontext._startElement(UnmarshallingContext.java:487)
          at
  com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingC
  ontext.startElement(UnmarshallingContext.java:465)
          at
  com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXStreamConn
  ector.handleStartElement(StAXStreamConnector.java:240)
          at
  com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXStreamConn
  ector.bridge(StAXStreamConnector.java:174)
          at
  com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerIm
  pl.unmarshal0(UnmarshallerImpl.java:358)
          at
  com.sun.xml.internal.bind.v2.runtime.BridgeImpl.unmarshal(Bridge
  Impl.java:109)
          at
  com.sun.xml.internal.bind.api.Bridge.unmarshal(Bridge.java:222)
          at
  com.sun.xml.internal.ws.client.sei.ResponseBuilder$DocLit.readRe
  sponse(ResponseBuilder.java:514)
          at
  com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Sync
  MethodHandler.java:110)
          at
  com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Sync
  MethodHandler.java:78)
          at
  com.sun.xml.internal.ws.client.sei.SEIStub.invoke(SEIStub.java:1
  07)
  .
  

Local fix

• The customer can set the following system properties:
  
  -Djavax.xml.parsers.DocumentBuilderFactory=org.apache.xerces.jax
  p.DocumentBuilderFactoryImpl
  
  -Dorg.apache.xerces.xni.parser.XMLParserConfiguration=org.apache
  .xerces.parsers.XIncludeAwareParserConfiguration
  

Problem summary

• The code was creating a new DocumentBuilder object for each
  transformation where the result was a DOMResult with the node
  unset.  Creating DocumentBuilder objects is expensive.
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR11
  7.0.0 SR2
  6.0.1 SR3
  .
  The code was modified to cache a DocumentBuilder object and
  reuse it.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  XML/XSL

• Fixed component ID

  620700126

Applicable component levels

• R600 PSY

     UP

• R700 PSY

     UP