APAR status
Closed as program error.
Error description
An instance using a sufficiently large number of logical logs, dbspaces, or chunks may be at risk of data loss or index errors for tables located in the root dbspace. There are a number of required conditions: 1. Informix server version 12.10.xC16, 14.10.xC9, 14.10.xC10 or 14.10.xC10W1, or a special build containing the fix for IT40986. 2. For OS platforms where a 4 kB base page size is used, any of the following: at least 3727 logical logs, 429 dbspaces, or 429 chunks. For all other OS platforms, using a 2 kB base page size, any of the following: at least 1846 logical logs, 198 dbspaces, or 198 chunks. 3. Tables, including system catalogs, located in the root dbspace with an extent that follows within 1 - 31 pages of a reserved pages extent. 4. A recent update to a data or index page of an in-scope table that has not been written to the chunk at the time of a checkpoint. If all of the above conditions are met then an affected page may be cleared within the buffer pool before the page is flushed to the chunk meaning that the update is lost. This could result in a missing data update or inconsistencies in index pages that may later give rise to an Assertion Failure such as "bfcheck: bad page." Secondary servers may also encounter rollforward errors when updating tables that are located within the root dbspace.
Local fix
Databases with frequent update activity that are by default located within the root dbspace, such as sysadmin or syscdr, may be moved to a different dbspace.
Problem summary
**************************************************************** * USERS AFFECTED: * * Users of Informix Server 12.10.xC16, 14.10.xC9, 14.10.xC10 * * and 14.10.xC10W1. * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to Informix Server 12.10.xC16W1 (or higher), * * 14.10.xC10W2 or 14.10.xC11 (or higher). * **************************************************************** See the following knowledge article for more details: https://supportcontent.ibm.com/support/pages/notification-and-ad ditional-details-pertaining-apar-it45318
Problem conclusion
Fixed in Informix Server 12.10.xC16W1, 14.10.xC10W2 and 14.10.xC11.
Temporary fix
Comments
APAR Information
APAR number
IT45318
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
2024-01-23
Closed date
2024-03-05
Last modified date
2024-06-28
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
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSGU8G","label":"Informix Servers"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"E10","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
Document Information
Modified date:
30 June 2024