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Informix - Problem description

Problem IT31851 Status: Closed

A CHUNK CAN BE EXTENDED PAST THE INTERNAL LIMIT OF 2,147,483,647PAGES

product:
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10
Problem description:
When chunk extension is enabled, it is possible to extend the
size of a chunk beyond the internal limit of 2,147,483,647
(0x7fffffff) pages.

When this happens, the first symptom is a negative chunk size in
the
onstat -d output.  However, this will also lead to I/O errors as
the server attempts
to use the chunk pages that are now all beyond the negative
chunk size.  Examples:

Chunk  in space '' has been extended by
14497846 kb.
I/O bad request chunk , pagenum 1807035447, pagecnt 1
I/O bad request chunk , pagenum 111209559, pagecnt 1
I/O bad request chunk , pagenum 2037804858, pagecnt 1
I/O bad request chunk , pagenum 111263159, pagecnt 1
Assert Warning: I/O bad request chunk , pagenum
891944057, pagecnt 1
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:
Disable chunk extension if the chunk is anywhere near
2,147,483,647 pages.

EXECUTE FUNCTION task("modify chunk extendable off", "chunk
number");
Solution
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
12.02.2020
04.03.2020
31.08.2020
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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