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Informix - Problem description

Problem IT32150 Status: Closed

MEMORY BLOCK HEADER FAILURES IMMEDIATELY AFTER A NEW HDR SEC IS ATTACHED
ON A PRIM PROMOTED BY A FAILOVER

product:
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10
Problem description:
Given the following environment:

HDR Pair with multiple Connection manager on top The HDR primary
was brought down and the old secondary is now
promoted to an new Primary. Immediately after the old primary is
attached to the HDR as a new secondary server and the primary
server is not empty , the server reports messages like :

20:03:46  Pool 'global' (0x10b022040)
20:03:46  Bad block header 0x10c351b78
20:03:46  Assert Warning: Memory block header corruption
detected in mt_shm_free 2
20:03:46  IBM Informix Dynamic Server Version 12.10.FC13
20:03:46   Who: Session(75029, informix@hostname, 6878,
0x10ba55f78)
                Thread(75064, srvinfx, 10ba319a8, 1)
                File: mtshpool.c Line: 2767
20:03:46   Results: Pool repaired
20:03:46   Action: Please notify IBM Informix Technical Support.
20:03:46  stack trace for pid 5956 written to
/opt/informix/IBM/12.10.FC13/tmp/af.29203612
20:03:46   See Also:
/opt/informix/IBM/12.10.FC13/tmp/af.29203612
20:03:46  Memory block header corruption detected in mt_shm_free
2
20:03:50  (4) soctcp_sighand failed: ASF error: -25579, errno: 0
20:09:12  Checkpoint Completed:  duration was 0 seconds.
20:09:12  Wed Mar 11 - loguniq 9, logpos 0x20e228, timestamp:
0xaf6e2 Interval: 74

20:09:12  Maximum server connections 66



20:03:46  Found during mt_shm_free 2
20:03:46  Pool 'global' (0x10b022040)
20:03:46  Bad block header 0x10c351b78
blk-64
000000010c351b38: 2f707473 2f333100 00272f64 6174612f
/pts/31..'/data/
000000010c351b48: 696e666f 726d6978 2f49424d 2f31322e
informix/IBM/12.
000000010c351b58: 31302e46 4331332f 6574632f 7072696d
10.FC13/etc/prim
000000010c351b68: 00006e00 04000000 00007400 33000003
..n.......t.3...
blk+64
000000010c351b78: ea2f6a18 02000000 ffffc001 00007d00
./j...........}.
000000010c351b88: b81b350c 01000000 4813350c 01000000
..5.....H.5.....
000000010c351b98: 40000000 00000000 a8421415 01000000
@........B......
000000010c351ba8: 6021020b 01000000 09641620 02000000
`!.......d. ....


20:03:46  Stack for thread: 75064 srvinfx

 base: 0x0000000116cc3000
  len:   69632
   pc: 0x000000000142e819
  tos: 0x0000000116cd0020
state: running
   vp: 1

0x000000000142e819 (oninit) afstack
0x00000000014317f1 (oninit) afhandler
0x0000000001431f12 (oninit) afwarn_interface
0x0000000001477994 (oninit) mt_free
0x00000000015e3697 (oninit) meFree
0x00000000015b6ad9 (oninit) pfConRes
0x0000000001550dde (oninit) ASF_Call
0x0000000000b070c0 (oninit) sqpassrequest
0x0000000000b0b99d (oninit) sqmain
0x000000000155d1ab (oninit) spawn_thread
0x0000000001420130 (oninit) th_init_initgls
0x0000000001465c48 (oninit) startup
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 12.10.xC15 and 14.10.xC4.  *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 12.10.xC15 (when available) or    *
* 14.10.xC4.                                                   *
****************************************************************
Local Fix:
Solution
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
11.03.2020
14.12.2020
14.12.2020
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)
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