APAR status
Closed as documentation error.
Error description
Adding the following shared memory connection to an instance previously configured and running successfully with just network connections: ol_informix1410_shm onipcshm jj-ubuntu2004 dummy_shm The startup fails as below: Assert Failed: shm_be.c, line 3452, thread 13, errno=13, could not open shm file. IBM Informix Dynamic Server Version 14.10.FC4W1DE Who: Session(7, informix@, 0, (nil)) Thread(13, sm_listen, 0, 1) File: neterrb.c Line: 530 stack trace for pid 2061 written to /products/14.10.FC4W1/tmp/af.3f54d3d See Also: /products/14.10.FC4W1/tmp/af.3f54d3d Thread ID 13 will NOT be suspended because it is deemed too critical to the server. Root cause is that Ubuntu 20.04 has the following kernel parameter with default value: sysctl -a | grep fs.protected_regular fs.protected_regular = 2
Local fix
Setting fs.protected_regular to 0 (not 1 or 2) and the instance starts successfully
Problem summary
**************************************************************** * USERS AFFECTED: * * Users of Informix Server prior to 14.10.xC6. * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to Informix Server 14.10.xC6 (when available). * ****************************************************************
Problem conclusion
Fixed in Informix Server 14.10.xC6.
Temporary fix
Comments
APAR Information
APAR number
IT34770
Reported component name
INFORMIX SERVER
Reported component ID
5725A3900
Reported release
E10
Status
CLOSED DOC
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-11-03
Closed date
2021-05-12
Last modified date
2021-05-12
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
[{"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:
13 May 2021