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IT31090: SIMPLE EVALUATION ERRORS ON A SINGLE REPLICATE CAN FORCE ALL OF ER TO SHUT DOWN

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APAR status

  • Closed as program error.

Error description

  • Take the following test case:
    
    create table t1 (c1 int, c2 char(4)) lock mode row;
    create unique index t1_idx1 on t1(c1);
    alter table t1 add constraint primary key (c1) constraint t1_pk;
    
    Then created the following replicate on the table:
    
    cdr def repl -c g_er1 -C always -M g_er1 -S row er1_t1_rep "P
    db1@g_er1:informix.t1" "select * from t1 where c2 in
    (1,2,3,4,5)" "R db1@g_er2:informix.t1" "select * from t1 where
    c2 in (1,2,3,4,5)"
    
    cdr def repl -c g_er2 -C always -M g_er2 -S row er2_t1_rep "P
    db1@g_er2:informix.t1" "select * from t1 where c2 in
    (1,2,3,4,5)" "R db1@g_er1:informix.t1" "select * from t1 where
    c2 in (1,2,3,4,5)"
    
    Note, that c2 is a character column but the where clause in the
    define replicate is using integer values because there are no
    quotes around the numbers in the "in clause".
    
    Then insert the following row on 1 side to get replicated.
    
    insert into t1 values(4,"3");
    
    Then do the following update statement:
    
    update t1
    set c2 = "a"
    where c1 = 4;
    
    When the update is processed by ER, it will shutdown ER with the
    following error in the MSGPATH file:
    
    11:00:33  Error - ER has encountered a fatal error and must shut
    down
    11:00:33  ER encountered a fatal error while evaluating
    replicate er1_t1_rep
              SQLCODE:-1213 ISAMCODE:0
    
    So at this point, ER is down and would need to do a cleanstart
    to skip trying to process the update that changed the column
    from a numeric value to a character value.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of Informix Server prior to 12.10.xC14 and 14.10.xC4.  *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Update to Informix Server 12.10.xC14 or 14.10.xC4 (when      *
    * available).                                                  *
    ****************************************************************
    

Problem conclusion

  • Fixed in Informix Server 12.10.xC14 and 14.10.xC4.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT31090

  • 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

    2019-11-27

  • Closed date

    2020-02-28

  • Last modified date

    2020-02-28

  • 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":"BU048","label":"IBM Software"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"C10","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
28 February 2020