home clear 64x64
en blue 200x116 de orange 200x116 info letter User
suche 36x36
Latest versionsfixlist
14.10.xC11 FixList
12.10.xC16.X5 FixList
11.70.xC9.XB FixList
11.50.xC9.X2 FixList
11.10.xC3.W5 FixList
Have problems? - contact us.
Register for free anmeldung-x26
Contact form kontakt-x26

Informix - Problem description

Problem IT07470 Status: Closed

DYNAMIC_LOGS CAN CREATE LOG. LOG GREATER THAN 1048575 PAGES LEADING TO
LOGPOS OVERFLOW

product:
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10
Problem description:
In a system down situation with "Checkpoint Record not Found in 
Logical Log.", after a rollback failure with 
"logerr('logreadlen')" it turned out the checkpoint position 
occurred twice in same log - and first one was not a checkpoint. 
 
Looking closer at this revealed two log. logs with tremendous 
sizes (> 1048575 = 0xfffff pages, which is max. addressable page 
within a log. log): 
 
    Log file number                70 
    Unique identifier              117908 
    Log file flags                 0x5        Log file in use 
    &                                         Log file has been 
backed up 
    Physical location              42:2589619 
    Log size                       1732608 (p) 
    Number pages used              373725 
    Date/Time file filled          02/28/2015 22:36:30 
    Time stamp                     0x411adb04 
 
    Log file number                71 
    Unique identifier              117909 
    Log contains last checkpoint:  Page 15156, byte 24 
    Log file flags                 0x3        Log file in use 
    &                                         Current log file 
    Physical location              42:4322227 
    Log size                       3502080 (p) 
    Number pages used              1063782 
    Date/Time file filled          - 
    Time stamp                     - 
 
For at least the second one (#71) we're seeing this in 
online.log: 
 
02/28/15 12:32:54  Logical Recovery has reached the transaction 
cleanup phase. 
02/28/15 12:35:14  Dynamically added log file 71 to DBspace 6 
02/28/15 12:35:14  Checkpoint Completed:  duration was 0 
seconds.
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL DBUSERS                                                  * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Update to IBM Informix Server 12.10.xC6                      * 
****************************************************************
Local Fix:
Solution
Problem Fixed In IBM Informix Server 12.10.xC6
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
03.03.2015
30.12.2015
30.12.2015
Problem solved at the following versions (IBM BugInfos)
12.10.xC6
Problem solved according to the fixlist(s) of the following version(s)
12.10.xC5.W1 FixList
12.10.xC6 FixList