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Informix - Problem description

Problem IT42348 Status: Closed

SESSION_LIMIT_MEMORY SESSION IS TERMINATED EVEN NOT REALLY REACHING
DEFINED LIMIT IN A SIMPLE QUERY WITH GROUP

product:
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10
Problem description:
in the session environment SESSION_LIMIT_MEMORY is  set.
A query was running using a simple group on a aggregate in the
way

select max ( col1 ), col2, col3 from table group by 2,3

DS_NONPDQ_QUERY_MEM is set to a low value
a temp dbspace is defined and configured in DBSPACETEMP

the session will be aborted reporting the configured limits are
reached,
but a monitoring on the allocated session memory show that the
session
never really reaches the limits
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 12.10.xC16 and 14.10.xC10. *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 12.10.xC16 or 14.10.xC10.         *
****************************************************************
Local Fix:
Solution
Workaround
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 12.10.xC16 and 14.10.xC10. *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 12.10.xC16 or 14.10.xC10.         *
****************************************************************
Comment
Fixed in Informix Server 12.10.xC16 and 14.10.xC10.
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
27.10.2022
15.05.2023
15.05.2023
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)