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Informix - Problem description

Problem IT38831 Status: Closed

ALTER FRAGMENT ADD OMIT FIRST/NEXT EXTENT SIZE FRAGMENT DEFINITION OF AN
INDEX IN AN FRAGMENTED TABLE

product:
INFORMIX SERVER / 5725A3900 / E10 - 
Problem description:
Given a fragmented table was created with

create table "informix".tab
  (
    id serial8 not null
  )
  fragment by expression
    ((id >= 0 ) AND (id < 200000000 ) ) in dbs1,
    ((id >= 200000000 ) AND (id < 400000000 ) ) in db2,
    ((id >= 400000000 ) AND (id < 600000000 ) ) in dbs3,
    remainder in remdbs
  extent size 10000 next size 5000 lock mode row;

create unique index "informix".tab_31 on "informix".tab
    (id) using btree FILLFACTOR 100 extent size 4000 next size
4000 ;

the table has an explicit first extend and next extend size
definition for the index and
the data fragments.

subsequent

alter fragment on table tab
        add ((id >= 600000000 ) AND (id < 800000000 ) )
                in dbs4;
alter fragment on table tab
        add ((id >= 800000000 ) AND (id < 1000000000 ) )
                in dbs5;
alter fragment on table tab
        add ((id >= 1000000000 ) AND (id < 1200000000 ) )
        in dbs6;

statements add new index/data fragments but the new index
fragments do not follow the original index definition

oncheck -pt test:tab | grep "First extent"
    First extent size              5000
    First extent size              5000
    First extent size              5000
    First extent size              5000
    First extent size              5000
    First extent size              5000
    First extent size              5000
    First extent size              2000
    First extent size              2000
    First extent size              2000
here
    First extent size              9500
    First extent size              9500
    First extent size              9500
    First extent size              2000
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 14.10.xC7.                 *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 14.10.xC7.                        *
****************************************************************
Local Fix:
Solution
Workaround
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 14.10.xC7.                 *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 14.10.xC7.                        *
****************************************************************
Comment
Fixed in Informix Server 14.10.xC7.
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
27.10.2021
02.11.2021
02.11.2021
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)
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