A fix is available
APAR status
Closed as program error.
Error description
An oversight in APAR VM66235 that can lead to abends in SSI clusters when links are unreliable or are starting and stopping with high frequency. Checks for the new return code introduced by the APAR were not added to several places that performed analysis of socket failures.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users with APAR VM66235 applied who * * encounter ISLINK instability problems. * **************************************************************** * PROBLEM DESCRIPTION: * **************************************************************** * RECOMMENDATION: APPLY PTF * **************************************************************** APAR VM66235 introduced a new ISFC sockets error condition to allow messages that are pending transmission across a link state transition (from up to down and back up again) to be discarded. However, some code paths that use sockets and check for explicit error conditions were not changed to accommodate this new one. If such an error occurs, a soft abend could result. The error can occur only if links are unstable.
Problem conclusion
Code has been changed to detect the new error condition and avoid a soft abend.
Temporary fix
Comments
APAR Information
APAR number
VM66101
Reported component name
VM CP
Reported component ID
568411202
Reported release
710
Status
CLOSED PER
PE
YesPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-12-13
Closed date
2019-12-18
Last modified date
2020-01-23
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UM35487
Modules/Macros
HCPXDL HCPXLK HCPXSS
Fix information
Fixed component name
VM CP
Fixed component ID
568411202
Applicable component levels
R710 PSY UM35487
UP19/12/26 P 2001 {
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG27M","label":"APARs - z\/VM environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"LOB16","label":"Mainframe HW"}}]
Document Information
Modified date:
23 January 2020