JR57229: DOC - ADD DOCUMENTATION FOR PROCESSXPATHINTERMEDIATERESULTCACHESIZE

APAR status

• Closed as documentation error.

Error description

• Information about PROCESSXPATHINTERMEDIATERESULTCACHESIZE is
  missing from the "Cache and cache-related settings" topic
  (https://www.ibm.com/support/knowledgecenter/SSFPJS_8.5.7/com.ib
  m.wbpm.admin.doc/topics/perf_tuning_other.html).
  
  Include the following information:
  
  If an XPath expression that is used in a BPEL process is not
  found in the cache, the expression must be compiled. This
  compilation happens either if the cache is too small or the
  expression is evaluated for the first time.
  
  You set the cache size by configuring a custom property
  ProcessXPathIntermediateResultCacheSize in the WebSphere®
  Application Server administrative console.
  ProcessXPathIntermediateResultCacheSize defaults to 100, which
  can be too small for some environments and might impact
  performance or in rare cases cause transaction timeouts.
  
  The right size of the cache depends on the number of XPath
  expressions that exist across all processes. If you cannot
  determine the right number, it is recommended that you increase
  the cache size in steps and monitor your system performance. For
  example, start with 500, then gradually increase in multiples of
  200. The larger the cache, the better the reuse, but keep in
  mind that the cache is kept in memory and increases memory
  consumption.
  
  Complete the following steps to increase the cache size:
  1) In the WebSphere Application Server administrative console,
  click Servers > WebSphere application server clusters >
  cluster_name > Business Flow Manager > Custom Properties.
  2) Verify whether the ProcessXPathIntermediateResultCacheSize
  property exists. If it does not exist, click New to create it.
  Enter the Name and the Value to be set for the custom property.
  Click Apply or OK, and then click Save in the Messages box that
  appears. Restart the server for the custom property to take
  effect.
  

Local fix

Problem summary

• No additional information is available.
  

Problem conclusion

• The content will be updated the next time the documentation is
  refreshed.
  

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

  BPM ADVANCED

• Fixed component ID

  5725C9400

Applicable component levels