APAR status
Closed as program error.
Error description
Following the fix for IC90645, free memory blocks are periodically drained from the VP private memory cache by the memory thread. However, this thread is not active during fast recovery and so free memory blocks may not be available for use by other VPs. If a significant amount of time is spent in fast recovery, for example by the rollback of a long transaction, then the amount of memory in use may continue to grow. This problem may be seen in the following extract from "onstat -g vpcache" vpid pid Blocks held Hit percentage Free cache 9 185 3034305 100.0 % 100.0 % Current VP total allocations from cache: 626409, Total frees: 2004552 size cur blks tgt blks alloc miss free drain draintime 1 550066 500 314196 0 864262 0 Thu Jan 1 05:30:00 1970 2 1104096 500 17 0 552065 0 Thu Jan 1 05:30:00 1970 ... The current number of blocks shown for block sizes 1 and 2 is in excess of the target blocks.
Local fix
This problem may be avoided by disabling the VP private memory cache in the onconfig file. It may then be enabled dynamically using the onmode -wm or -wf command with VP_MEMORY_CACHE argument.
Problem summary
**************************************************************** * USERS AFFECTED: * * all users * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Update to IDS-11.70.xC9 * ****************************************************************
Problem conclusion
Problem Fixed In IDS-11.70.xC9
Temporary fix
Comments
APAR Information
APAR number
IT01019
Reported component name
INFORMIX SERVER
Reported component ID
5725A3900
Reported release
B70
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2014-04-14
Closed date
2017-06-09
Last modified date
2017-06-09
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
INFORMIX SERVER
Fixed component ID
5725A3900
Applicable component levels
RA10 PSN
UP
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"B70","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
09 June 2017