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Informix - Problem description

Problem IT40737 Status: Closed

ASSERT POSSIBLE IN SSC_LINK WITH STMT_CACHE ENABLED IF SHMTOTAL IS
STRESSED

product:
INFORMIX SERVER / 5725A3900 / E10 - 
Problem description:
The following stacks where observed in 14.10.FC8 on linux
x86_64.  Initial testing showed the problem existed in
14.10.FC4W1

These stacks are common

04/19/2022 11:51:26   Size of resident + virtual segments
16260KB + 420124KB > 420000KB
04/19/2022 11:51:26           total allowed by configuration
parameter SHMTOTAL

04/19/2022 11:51:26   Assert Failed: No Exception Handler
04/19/2022 11:51:26   IBM Informix Dynamic Server Version
14.10.FC8
04/19/2022 11:51:26    Who: Session(1978, informix@hostname,
8405, 0x45fe3da8)
                Thread(1996, sqlexec, 45fc2028, 1)
                File: mtex.c Line: 569
04/19/2022 11:51:26    Results: Exception Caught. Type:
MT_EX_OS, Context: mem
04/19/2022 11:51:26    Action: Please notify IBM Informix
Technical Support.
04/19/2022 11:51:26    See Also:
/tmp/af.bb4e88e

11:51:26  Stack for thread: 1996 sqlexec

0x00000000014cfead (oninit) afstack
0x00000000014d2c99 (oninit) mt_ex_throw_sig
0x00000000014d4890 (oninit) afsig_handler
0x00007f26025775e0 (Linux) 
0x000000000075d455 (oninit) ssc_link
0x0000000000aa8372 (oninit) parsecmd
0x0000000000aa75c3 (oninit) sqcmd
0x0000000000aa70fd (oninit) sq_prepare
0x0000000000b93e2e (oninit) sqmain
0x0000000001603a79 (oninit) spawn_thread
0x00000000014bcfb3 (oninit) th_init_initgls
0x00000000015054cf (oninit) startup


04/19/2022 12:04:52   Size of resident + virtual segments
16260KB + 420124KB > 420000KB
04/19/2022 12:04:52           total allowed by configuration
parameter SHMTOTAL

04/19/2022 12:04:52   Assert Failed: No Exception Handler
04/19/2022 12:04:52   IBM Informix Dynamic Server Version
14.10.FC8
04/19/2022 12:04:52    Who: Session(2075,
informix@hostname,1659, 0x45fe2fa8)
                Thread(2092, sqlexec, 45fc6828, 1)
                File: mtex.c Line: 569
04/19/2022 12:04:52    Results: Exception Caught. Type:
MT_EX_OS, Context: mem
04/19/2022 12:04:52    Action: Please notify IBM Informix
Technical Support.
04/19/2022 12:04:52    See Also:
/tmp/af.c14ebb3

12:04:52  Stack for thread: 2092 sqlexec
0x00000000014cfead (oninit) afstack
0x00000000014d2c99 (oninit) mt_ex_throw_sig
0x00000000014d4890 (oninit) afsig_handler
0x00007f81793ff5e0 (Linux) 
0x0000000000616601 (oninit) sqmktab
0x00000000006772f0 (oninit) sel2cb
0x0000000000674720 (oninit) qblk2cb
0x0000000000666cc4 (oninit) stmt2cb
0x00000000006656cd (oninit) p_sp2cb
0x000000000075cf31 (oninit) ssc_link
0x0000000000aa8372 (oninit) parsecmd
0x0000000000aa75c3 (oninit) sqcmd
0x0000000000aa70fd (oninit) sq_prepare
0x0000000000b93e2e (oninit) sqmain
0x0000000001603a79 (oninit) spawn_thread
0x00000000014bcfb3 (oninit) th_init_initgls
0x00000000015054cf (oninit) startup
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 14.10.xC9.                 *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 14.10.xC9.                        *
****************************************************************
Local Fix:
Solution
Workaround
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 14.10.xC9.                 *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 14.10.xC9.                        *
****************************************************************
Comment
Fixed in Informix Server 14.10.xC9.
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
25.04.2022
29.09.2022
29.09.2022
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)