IBM Support

IT33277: VARIOUS ASSERTS IN RMDICTIONARY WHEN EXECUTING STORED PROCEDURESWITH REMOTE TEMP TABLES AND PROCEDURES

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APAR status

  • Closed as program error.

Error description

  • It's possible for the server to assert when executing stored
    procedures that have references to remote stored procedures and
    remote temp tables under stress.
    
    Examples of failures
    
    01:00:01  Assert Failed: Condition Failed (Memory pointer
    (0x6c942028) freed twice), In (mt_shm_free)
    01:00:01   Who: Session(2456799, informix@hostname, 32130,
    0x46832618)
                    Thread(45059619, sqlexec, 50ac4368, 8)
                    File: mtshpool.c Line: 4712
    01:00:01   Action: Please notify IBM Informix Technical Support.
    
    afstack
    afhandler
    affail_interface
    mem_asfail
    mt_free
    old_do_rhpfree
    rmdictionary
    decrrefcount_trace
    closerel
    close_cb_subtree_r
    close_cb_subtree
    closesdb
    doreleasesdb
    drpcurlist
    rmstproc
    sqscb_cleanup
    destroy_session
    sq_exit
    sqmain
    spawn_thread
    th_init_initgls
    startup
    
    01:00:01  Assert Failed: Exception Caught. Type: MT_EX_OS,
    Context: mem
    01:00:01   Who: Session(2456825, informix@hostname, 32130,
    0x46839788)
                    Thread(45060063, sqlexec, 50af0088, 11)
                    File: mtex.c Line: 420
    01:00:01   Action: Please notify IBM Informix Technical Support.
    
    afstack
    afhandler
    affail_interface
    mt_ex_throw_sig
    afsig_handler
    (Linux) <signal frame>
    old_do_rhpfree
    rmdictionary
    decrrefcount_trace
    closerel
    close_cb_subtree_r
    close_cb_subtree
    closesdb
    doreleasesdb
    drpcurlist
    initcrd
    qd_initenv
    ip_evalsql
    runproc
    udrlm_spl_execute
    udrlm_exec_routine
    udr_execute
    exroutine
    execproc
    aud_execproc
    excommand
    sq_execute_workhorse
    sq_execute
    sqmain
    spawn_thread
    th_init_initgls
    startup
    
    01:00:00  Assert Failed: Exception Caught. Type: MT_EX_OS,
    Context: mem
    01:00:00   Who: Session(363565, informix@hostname, 15257,
    0x46837528)
                    Thread(6862731, sqlexec, 5027cee8, 15)
                    File: mtex.c Line: 420
    01:00:00   Action: Please notify IBM Informix Technical Support.
    01:00:00  SHM Globals and Master Pool/Master Block Adresses:
    
    afstack
    afhandler
    affail_interface
    mt_ex_throw_sig
    afsig_handler
    (Linux) <signal frame>
    old_do_rhpfree
    rmdictionary
    decrrefcount_trace
    close_cb_subtree_r
    close_cb_subtree_r
    close_cb_subtree
    closesdb
    doreleasesdb
    drpcurlist
    rmstproc
    sqscb_cleanup
    destroy_session
    sq_exit
    sqmain
    spawn_thread
    th_init_initgls
    startup
    
    10:11:12  Assert Failed: Exception Caught. Type: MT_EX_OS,
    Context: mem
    10:11:12   Who: Session(5486, informix@hostname, 3253,
    0x468465c8)
                    Thread(161670, sqlexec, 62c7d108, 10)
                    File: mtex.c Line: 420
    10:11:12   Action: Please notify IBM Informix Technical Support.
    10:11:12  SHM Globals and Master Pool/Master Block Adresses:
    
    afstack
    afhandler
    affail_interface
    mt_ex_throw_sig
    afsig_handler
    (Linux) <signal frame>
    old_do_rhpfree
    rmdictionary
    decrrefcount_trace
    close_cb_subtree_r
    close_cb_subtree_r
    close_cb_subtree
    closesdb
    doreleasesdb
    drpcurlist
    initcrd
    qd_initenv
    ip_evalsql
    runproc
    udrlm_spl_execute
    udrlm_exec_routine
    udr_execute
    exroutine
    execproc
    aud_execproc
    excommand
    sq_execute_workhorse
    sq_execute
    sqmain
    spawn_thread
    th_init_initgls
    startup
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of Informix Server prior to 12.10.xC15 and 14.10.xC5.  *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Informix Server 12.10.xC15 (when available) or    *
    * 14.10.xC5.                                                   *
    ****************************************************************
    

Problem conclusion

  • Fixed in Informix Server 12.10.xC15 and 14.10.xC5.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT33277

  • Reported component name

    INFORMIX SERVER

  • Reported component ID

    5725A3900

  • Reported release

    C10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-06-19

  • Closed date

    2021-01-06

  • Last modified date

    2021-01-06

  • 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

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU029","label":"Software"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"C10"}]

Document Information

Modified date:
11 January 2021