APAR status
Closed as program error.
Error description
An Informix server using 14.10.FC4W1 with CDC sessions and a connected HDR secondary server may experience an Assert Failure or hang and become unresponsive. The affected thread will be the dr_prsend thread which communicates with the HDR secondary. An example of the stack in the Assert Failure: Stack for thread: 221163 dr_prsend afstack mt_ex_throw_sig afsig_handler mt_wakeup_expedite_haslock mt_wakeup_expedite_haslock mt_wakeup_expedite cdrLSNQ_wakup cdrlsn_skiplist_remove cdrLSNQ_SetLSN@AF10_6 hdrSetLPG dr_primary_send dr_session_thread startup If a hang occurs then same dr_prsend thread may be seen in a constantly running state. Using a command such as pstack or procstack to obtain the stack of the CPU VP oninit process on which the dr_prsend thread runs may show a stack similar to: __fd_poll mt_nap_int mt_spin_lock_wait cdrLSNQ_wakup cdrlsn_skiplist_remove cdrLSNQ_SetLSN@AF10_6 hdrSetLPG dr_primary_send dr_session_thread startup system In both cases a restart of the primary server will be required.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * Users of Informix Server prior to 12.10.xC15 and 14.10.xC5. * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to Informix Server 12.10.xC15 (when available) or * * 14.10.xC5. * ****************************************************************
Problem conclusion
Fixed in Informix Server 12.10.xC15 and 14.10.xC5.
Temporary fix
Comments
APAR Information
APAR number
IT34195
Reported component name
INFORMIX SERVER
Reported component ID
5725A3900
Reported release
E10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-09-13
Closed date
2020-12-09
Last modified date
2020-12-09
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
[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"E10"}]
Document Information
Modified date:
10 December 2020