PI94076: JCR SEEDLIST CLEANUP ROUTINE CAN CAUSE LOCKWAITS IN ICMSTJCRTSSEEDLISTPENDING TABLE

APAR status

• Closed as program error.

Error description

• On Portal systems with a high level of WCM Authoring activity,
  it is possible that the JCR Seedlist Cleanup task can cause lock
  waits in the ICMSTJCRTSSEEDLISTPENDING table. This occurs if
  the Seedlist crawler or the JCR Seedlist Cleanup routine (via
  the JCR Seedlist Janitor background task) are not run
  successfully on a regular basis.  The number of rows
  that need to be deleted from this table can reach a large
  enough volume as to prevent the delete processing from being
  completed in a reasonable amount of time.
  

Local fix

• None available.
  

Problem summary

• A code fix for this issue has been integrated into Combined WP &
  WCM V8.5.0.0 Cumulative Fix 16:
  https://www-945.ibm.com/support/fixcentral/swg/selectFixes?paren
  t=ibm/WebSphere&product=ibm/WebSphere/WebSphere+Portal&release=A
  ll&platform=All&function=aparId&apars=PI91150
  

Problem conclusion

• This fix changes the delete routine to reduce the number of rows
  that the delete will attempt in one SQL statement as well as in
  one iteration of the Cleanup routine.
  
  The fix has two new properties that can be defined (defaults
  exist if they aren't defined) in the JCR Resource Environment
  Provider:
  
  Login to WAS console, navigate to Resource environment providers
  
  > JCR ConfigService PortalContent > Custom properties
  
  Property name:
  jcr.text.search.seedlist.cleanup.pending.max.deletes.per.
  interval
  
  Default value: 100000
  
  Description: For a given iteration of the Seedlist Cleanup
  Utility, this value defines the number of rows from the
  ICMSTJCRTSSEEDLISTPENDING will attempt to delete prior to
  terminating the iteration.
  
  
  Property name:  jcr.text.search.seedlist.cleanup.pending.limit
  
  Default value: 25000
  
  Description:  This value defines the maximum number of rows that
  the Seedlist Cleanup Utility will attempt to delete from the
  ICMSTJCRTSSEEDLISTPENDING table in a single SQL call.
  

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

  WEBSPHERE PORTA

• Fixed component ID

  5724E7600

Applicable component levels

• R850 PSY

     UP

• R900 PSY

     UP