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14.10.xC5 FixList
12.10.xC14.X5 FixList
11.70.xC9.XB FixList
11.50.xC9.X2 FixList
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Informix - Problem description

Problem IT34066 Status: Closed

SET EXPLAIN OFF CAN CAUSE ASSERT FAIL CALLING MT_AIO_FCLOSE
FROMSETEXPLAIN

product:
INFORMIX SERVER / 5725A3900 / E10 - 
Problem description:
Shortly after bringing the server on-line, it's possible for the
server to assert with a stack like below when
running set explain off.

0x00000000014e501d (oninit) afstack
0x00000000014eabe1 (oninit) mt_ex_throw_sig
0x00000000014f8d68 (oninit) afsig_handler
0x00007fa64fe205e0 (Linux) 
0x00000000014cc299 (oninit) mt_aio_fclose
0x0000000000646a84 (oninit) setexplain
0x00000000007502de (oninit) aud_setexplain
0x0000000000640bd7 (oninit) excommand
0x0000000000af260b (oninit) sq_execute_workhorse
0x0000000000af2e4d (oninit) sq_execute
0x0000000000bc655e (oninit) sqmain
0x0000000001613a7a (oninit) spawn_thread
0x00000000014d5cf2 (oninit) th_init_initgls
0x000000000151c00f (oninit) startup

The problem has a generally reliable reproduction, but after it
asserts for the first time on a cpu vp
it seems to no longer reproduce.
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 14.10.xC5.                 *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Update to Informix Server 14.10.xC5.                         *
****************************************************************
Local Fix:
Setting the following onconfig parameter may work around the
problem:

STMT_CACHE_QUERY_PLAN 0
Solution
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
31.08.2020
07.12.2020
07.12.2020
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)
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