Fixes are available
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21
APAR status
Closed as program error.
Error description
WebSphere OAuth TAI template cache has a synchronized lock and can block lots of threads . com/ibm/ws/security/oauth20/util/TemplateRetriever.getTempla te (TemplateRetriever.java) has a lock that blocks all other threads.
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: IBM WebSphere Application Server Liberty * * Profile administrators of OAuth 2.0 * * services * **************************************************************** * PROBLEM DESCRIPTION: Liberty profile OAuth 2.0 services can * * block all requests if an error occurs * * when loading a custom form * **************************************************************** * RECOMMENDATION: * **************************************************************** Liberty profile OAuth 2.0 services allow customized consent and error forms. If the loading of a custom form does not return, all requests are blocked. An example of an issue with a protected resource is when a back-end server that the protected resource uses is unavailable.
Problem conclusion
Liberty profile OAuth 2.0 service is updated to optimize the access to custom forms with a Semaphore instead of a synchronized lock. The fix for this APAR is currently targeted for inclusion in fix pack 8.5.5.8. Please refer to the Recommended Updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix
Comments
APAR Information
APAR number
PI36818
Reported component name
LIBERTY PROFILE
Reported component ID
5724J0814
Reported release
855
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-03-11
Closed date
2015-10-09
Last modified date
2015-10-09
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
WAS LIBERTY COR
Fixed component ID
5725L2900
Applicable component levels
R855 PSY
UP
Document Information
Modified date:
28 April 2022