Fixes are available
8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
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
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
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
In some instances an inter-replica communication failure is not handled properly, resulting with a replica being unable to re-establish connection to another replica. The messages.log should contain the following messages: E CWWKX6020E: A collective controller internal error occurred: java.nio.channels.CancelledKeyException. The replica needs to be restarted. E CWWKX6008E: The collective controller is unavailable, probably due to a loss of majority of the replica set, or a communications failure. Current active replica set is [...]. The configured replica set is [...]. The connected standby replicas are [...]. E CWWKX6001W: The collective controller is unable to establish a TCP connection or communicate with replica ...
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server Liberty Profile collectives. * **************************************************************** * PROBLEM DESCRIPTION: Collective controllers in a multi- * * replica replica set are unable to * * establish a TCP connection with each * * other * **************************************************************** * RECOMMENDATION: * **************************************************************** In some instances an inter-replica communication failure is not handled properly, resulting with a replica being unable to re- establish connection to another replica. The messages.log will contain the following messages: E CWWKX6020E: A collective controller internal error occurred: java.nio.channels.CancelledKeyException. The replica needs to be restarted. E CWWKX6008E: The collective controller is unavailable, probably due to a loss of majority of the replica set, or a communications failure. Current active replica set is [...]. The configured replica set is [...]. The connected standby replicas are [...]. E CWWKX6001W: The collective controller is unable to establish a TCP connection or communicate with replica ...
Problem conclusion
The inter-replica communication code was improved to gracefully handle and recover from this failure. The fix for this APAR is currently targeted for inclusion in fix pack 8.5.5.5. Please refer to the Recommended Updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix
Stop and then restart the failing replica.
Comments
APAR Information
APAR number
PI34012
Reported component name
WAS LIBERTY COR
Reported component ID
5725L2900
Reported release
855
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-02-03
Closed date
2015-02-06
Last modified date
2015-02-06
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