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Informix - Problem description

Problem IT31807 Status: Closed

EXCESSIVE MEMORY USAGE DURING ARCHIVE WHEN CHUNK CONTAINS 2,147,483,647
PAGES

product:
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10
Problem description:
The maximum number of pages in a chunk is  2,147,483,647
(0x7fffffff).

Archiving a dbspace with a chunk of this size can use an
excessive amount of memory when starting the archive and there
is a reasonable chance it will fail with an error comparable to:

CDR 4026531841 byte memory allocation failed (Pool:arc_4667763
Thread:ontape).
Assert Warning: ISAM error:  An error has occurred during
archive back up.
IBM Informix Dynamic Server Version 
        Who: Session(4667763, user@host, 37903, 0xf0d4caf8)
        Thread(5315619, ontape, 1f56c9988, 19)
        File: rsarcutl.c Line: 115
Action: init_arcbu()/SCBMALLOC()
stack trace for pid 97815 written to DUMPDIR/af.200bc8f8
See Also: DUMPDIR/af.200bc8f8
ISAM error:  An error has occurred during archive back up.

With a stack:

afstack
afhandler
afwarn_interface
oops_error
init_archive
isopen_arcbu
sqisopen_arcbu
tbj_open_archive
sqmain
spawn_thread
th_init_initgls
startup
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 12.10.xC14 and 14.10.xC4.  *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Update to Informix Server 12.10.xC14 or 14.10.xC4 (when      *
* available).                                                  *
****************************************************************
Local Fix:
Configure the instance to allow it to use up to an additional
4GB of memory for the archive.
Solution
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
10.02.2020
04.03.2020
01.09.2020
Problem solved at the following versions (IBM BugInfos)
12.10.xC14,
14.10.xC4
Problem solved according to the fixlist(s) of the following version(s)
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