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14.10.xC10 FixList
12.10.xC16.X5 FixList
11.70.xC9.XB FixList
11.50.xC9.X2 FixList
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Informix - Problem description

Problem IT12944 Status: Closed

ASSERT SEGV IN RSIDXSCAN_READ CAN HAPPEN WHEN USING MULTI INDEX SCAN

product:
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10
Problem description:
A typical stack is:

(oninit) afstack
(oninit) mt_ex_throw_sig
(oninit) afsig_handler
(Linux) 
(oninit) rsidxscan_read
(oninit) fmh_idxscan_read
(oninit) pull_eq
(oninit) pull
(oninit) pull_and
(oninit) pull
(oninit) fill_result_buf
(oninit) rmap_fetch
(oninit) readmidx
(oninit) gettupl
(oninit) scan_next
(oninit) join_next
(oninit) join_next
(oninit) getrow
(oninit) fetchrow
(oninit) exfetch
(oninit) sql_nfetch
(oninit) sq_nfetch
(oninit) sqmain
(oninit) spawn_thread
(oninit) th_init_initgls
(oninit) startup
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of 12.10.xC1 through 12.10.xC6, and 11.70.xC1 through  *
* 11.70.xC8.                                                   *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* A query using multi-index scan may result in assertion       *
* failure under the following conditions:                      *
*   - a multi-index scan is used to access a table in the      *
* query, i.e. tab1                                             *
*   - one of the index scans uses a "!=" predicate, i.e.,      *
* tab1.col1 != ""                                              *
*   - the column referenced, col1, is NOT a character column,  *
* rather it's numeric, e.g. integer, float, decimal, etc       *
*   - the predicate uses a NULL string "" as the right hand    *
* side of the predicate                                        *
*   - tab1 has an index with col1 as lead index column (such   *
* that an index scan is used as part of multi-index scan)      *
****************************************************************
* RECOMMENDATION:                                              *
* Update to IBM Informix Server 12.10.xC7                      *
****************************************************************
Local Fix:
Presumably, a workaround would be to set onconfig
MULTI_INDEX_SCAN to 0.
Solution
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
28.12.2015
28.06.2016
28.06.2016
Problem solved at the following versions (IBM BugInfos)
12.10.xC7
Problem solved according to the fixlist(s) of the following version(s)
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