IBM Support

IT40737: ASSERT POSSIBLE IN SSC_LINK WITH STMT_CACHE ENABLED IF SHMTOTAL IS STRESSED

Subscribe to this APAR

By subscribing, you receive periodic emails alerting you to the status of the APAR, along with a link to the fix after it becomes available. You can track this item individually or track all items by product.

Notify me when this APAR changes.

Notify me when an APAR for this component changes.

 

APAR status

  • Closed as program error.

Error 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) <signal frame>
    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) <signal frame>
    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
    

Local fix

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.                        *
    ****************************************************************
    

Problem conclusion

  • Fixed in Informix Server 14.10.xC9.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT40737

  • Reported component name

    INFORMIX SERVER

  • Reported component ID

    5725A3900

  • Reported release

    E10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2022-04-25

  • Closed date

    2022-09-29

  • Last modified date

    2022-09-29

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    INFORMIX SERVER

  • Fixed component ID

    5725A3900

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"E10"}]

Document Information

Modified date:
29 September 2022