INFORMIX SERVER / 5725A3900 / B70 - IDS 11.70

During a level 0 backup, the following assert warning was
observed:

ASSERT WARNING: I/O BAD REQUEST CHUNK 73, PAGENUM 22967, PAGECNT
3 DURING LEVEL 0 BACKUP

AUTO_READAHEAD = 2,128 is set in the onconfig.

18:04:59  Assert Warning: I/O bad request chunk 73, pagenum
22967, pagecnt 3
18:04:59  IBM Informix Dynamic Server Version 12.10.FC1
18:04:59   Who: Session(676, informix@server, 2416654,
70000008043adb0)
                Thread(1315, arcbackup1, 70000007fcb3328, 8)
                File: rsbuff.c Line: 5589
18:04:59   Action: Please notify IBM Informix Technical Support.
18:04:59   See Also: /opt/informix/tmp/af.90bb61b
18:05:00  Invoking debugger on oninit: VP (PID/ThreadID) =
848822
18:05:00
                Thread(1315, arcbackup1, 0x0, 8)
18:05:00  oninit pid 848822 waiting for debugger
18:05:04  Archive on dbs3 Completed.
18:05:11  Archive on dbs8 Completed.
18:05:15  Archive on dbs10 Completed.
18:05:17  Archive on dbs7 Completed.
18:05:17  Archive on dbs11 Completed.
18:05:18  Archive on dbs12 Completed.
18:05:19  Archive on dbs6 Completed.

Stack for thread: 1315 arcbackup1
 base: 0x07000000c832e000
  len:   69632
   pc: 0x0000000100081024
  tos: 0x07000000c833df90
state: running
   vp: 8

(oninit)invoke_debugger
(oninit)afhandler
(oninit)afwarn_interface
(oninit)physio
(oninit)arc_pages
(oninit)arc_dbspace
(oninit)arc_scanner
(oninit)startup

not known / see Local fix

This APAR is a duplicate of IT27587

Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :

24.08.2017
24.09.2019
08.10.2019