PH42735: HANG OCCURS WHEN ATTRIBUTERANGESTEP VALUE IS SET LARGER THAN RECOMMENDED

APAR status

• Closed as program error.

Error description

• For Active Directory LDAPs which have groups with more than
  1500 members, the wimconfig.xml file needs to have the
  attributeRangeStep property added to the
  ldapServerConfiguration section of the repository definition,
  to be able to return the group members.
  
  The recommended value is attributeRangeStep="1000".
  
  If a value is used that is larger than the maximum LDAP will
  return, WebSphere hangs and returns no results.
  

Local fix

• Use the recommended value of attributeRangeStep="1000"
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: If attributeRangeStep is set to a       *
  *                      value                                   *
  *                      larger than the maximum LDAP can        *
  *                      return, a hang occurs.                  *
  ****************************************************************
  * RECOMMENDATION:  If attributeRangeStep is set to something   *
  *                  large, like 2000, try 1000.                 *
  ****************************************************************
  For Active Directory LDAPs which have groups with more than
  1500 members, the wimconfig.xml file needs to have the
  attributeRangeStep property added to the
  ldapServerConfiguration section of the repository definition,
  to be able to return the group members.
  The recommended value is attributeRangeStep="1000".
  If the value for attributeRangeStep that is used is larger than
  the maximum number of attributes LDAP can return, WebSphere will
  hang.
  

Problem conclusion

• If attributeRangeStep is set to a value higher than LDAP can
  return, WebSphere will request the maximum LDAP
  can return instead.
  
  The fix for this APAR is targeted for inclusion in fix pack
  8.5.5.22 and 9.0.5.12. For more information, see 'Recommended
  Updates for WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels