APAR status
Closed as fixed if next.
Error description
Following the submission of a request to read ahead index or data pages the requesting thread may issue an abort request for that request if the pages are no longer required. The request is processed by one of the readahead threads but this may not notice the abort request either during or prior to commencement of the request processing. When this happens there is the potential for the unintentional modification of memory in the thread associated with the original request. Depending on the activities of the originating thread such modification may go unnoticed or may lead to an Assert Failure. There could be many different stacks seen for the AF but two scenarios have been seen during the exit processing of the thread. One is an Assert Failure for a bad block header and the other is a crash with a stack such as: (oninit) afstack (oninit) mt_ex_throw_sig (oninit) afsig_handler (Linux) <signal frame> (oninit) opfree (oninit) rscleanup (oninit) sqscb_cleanup (oninit) destroy_session (oninit) sq_exit (oninit) sqmain (oninit) spawn_thread
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * When readahead is active * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to 12.10.xC6 * ****************************************************************
Problem conclusion
Temporary fix
Comments
APAR Information
APAR number
IT11620
Reported component name
INFORMIX SERVER
Reported component ID
5725A3900
Reported release
C10
Status
CLOSED FIN
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-10-07
Closed date
2016-01-19
Last modified date
2024-09-24
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Applicable component levels
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"C10","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
Document Information
Modified date:
25 September 2024