IC99865: WSPOLICY DOCUMENTS REFERENCED BY WSP:POLICYREFERENCE DURING WSDL COMPILATION MIGHT NOT BE RELEASED AND CAUSE MEMORY GROWTH

Fix packs for DataPower XML Security Gateway version 6.0
Fix packs for DataPower B2B Appliance version 6.0
Fix packs for DataPower Integration Appliance version 6.0
Fix packs for DataPower Low Latency Appliance version 6.0
Fix packs for DataPower Service Gateway version 6.0
Fix packs for DataPower Service Gateway version 6.0.1
Fix packs for DataPower B2B Appliance version 6.0.1
Fix packs for DataPower Integration Appliance version 6.0.1

APAR status

• Closed as program error.

Error description

• Using the WSDL-cache-policy to compile locally stored WSDL
  files, the resulting QRef entries might not be returned which
  results in memory growth.
  
  This behavior happens in firmware versions 6.0.0.0 and later.
  

Local fix

• Scenario for cause of growing QRef entries:
  
   1) The WSDLs have WSPolicy embedded inside the WSDL.
   2) The WSDLs are all local.
   3) The WS Proxy has wsdl-cache-policy & matching is set to "*"
  
  Number 3 is where the problem happens.  Every 30 seconds, the
  WS Proxy is recompiling the locally stored WSDLs and recreating
  all those WSPolicy objects.
  
  
  
  To work around this issue, make one of the following
  suggested changes:
  
   1) Either turn off the unnecessary WSDL cache, or change the
  match expression to something more meaningful, such as
  "http://*" and increase the TTL.
   2) Use the WSDL Status->refresh action to recompile the WSDLs
  which are stored locally.  (Usage:  wsdl-refresh <WSGateway>
  <WSDL>)
  

Problem summary

• Affected is the use of WSDLs (in WSP or elsewhere).
  
  WSPolicy documents referenced by <wsp:PolicyReference> are
  not released during WSDL compilation causing memory growth.
  This causes trouble especially in case of aggressive
  wsdl-cache-policy settings leading to frequent WSDL
  recompilations.
  

Problem conclusion

• Fix is available in 6.0.0.8, 6.0.1.4 and 7.0.0.0.
  
  For a list of the latest fix packs available, please see:
  http://www-01.ibm.com/support/docview.wss?uid=swg21237631
  

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

  DATAPOWER

• Fixed component ID

  DP1234567

Applicable component levels

• R600 PSY

     UP

• R601 PSY

     UP

• R700 PSY

     UP