RS02551: DECISION ENGINE IS SLOWER THAN CLASSIC RULE ENGINE IN CASE WHERE XML BINDING IS INVOLVED

Operational Decision Manager V8.8.1.1: Interim Fix 47
Operational Decision Manager V8.8.1.1: Interim Fix 50
Operational Decison Manager z/OS 8.8.1.2 Fix Pack
Operational Decision Manager V8.8.1.2 Fix Pack
Operational Decision Manager V8.8.1.0: Interim Fix 46

APAR status

• Closed as program error.

Error description

• When XML binding is involved there is a performance issue in
  Decision Engine:
  JProfiler and the WAS javacores both point to an the issue
  being this stack trace:
  
  at java/util/Vector$1.nextElement(Vector.java:355(Compiled Code)
  )
  at ilog/rules/xml/runtime/IlrXmlRtClassImpl.initialise(
  IlrXmlRtClassImpl.java:174(Compiled Code))
  at ilog/rules/xml/binding/IlrRtModelFactoryImpl$RtClass.
  newInstance(IlrRtModelFactoryImpl.java:407(Compiled Code))
  at ilog/rules/xml/binding/IlrXmlClassDriver$DefaultConstructor.
  newInstance(IlrXmlClassDriver.java:604(Compiled Code))
  at
  com/ibm/rules/engine/migration/classdriver/runtime/XomClassDrive
  rManager.newInstance(XomClassDriverManager.java:61(Compiled
  Code))
  at com/ibm/rules/generated/pck/Functions/RenderFunctions/_
  <b>PckClass.addRenderDetailsToMap</b>(Bytecode PC:1919(Compiled
  Code))
  at com/ibm/rules/generated...
  

Local fix

Problem summary

• The performance issue is caused by the usage of Vector and
  HashTable in IlrXmlRtClassImpl. The problem can be fixed by
  using HashMap and ArrayList.
  

Problem conclusion

• The code is fixed.
  

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:

Modules/Macros

• 999
  

Fix information

• Fixed component name

  WDS FOR RULES

• Fixed component ID

  5725B6903

Applicable component levels

• R881 PSY

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