|
Problem IC66505
|
Status: Closed |
RARE CONDITION MAY LEAD TO ROLLFORWARD / CRASH RECOVERY PARALLEL FAILURE |
| product: |
DB2 FOR LUW / DB2FORLUW / 950 - DB2 |
| Problem description: |
During parallel recovery, a rare timing condition may cause some
internal data to be cleaned up before the other process tries to
read it. This could cause a logical assertion to fail during
recovery and
the instance to be abend.
The internal data being prematurely cleaned up is called the
object
descriptor. In a customer build the problem will fail in
function sqlbfix,
probe 5 with the following message in the db2diag.log:
"fixCB::pageKey and fixCB::obj do not match"
Note again this issue only occurs during recovery. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All *
****************************************************************
* PROBLEM DESCRIPTION: *
* During parallel recovery, a rare timing condition may cause *
* some *
* internal data to be cleaned up before the other process *
* tries to *
* read it. This could cause a logical assertion to fail during *
* *
* recovery and *
* *
* the instance to be abend. *
* *
* *
* *
* The internal data being prematurely cleaned up is called the *
* *
* object *
* *
* descriptor. In a customer build the problem will fail in *
* *
* function sqlbfix, *
* *
* probe 5 with the following message in the db2diag.log: *
* *
* *
* *
* "fixCB::pageKey and fixCB::obj do not match" *
* *
* *
* *
* Note again this issue only occurs during recovery. *
****************************************************************
* RECOMMENDATION: *
* This is a very rare timing issue. If hit, one can turn off *
* parallel recovery but need to engage DB2 service for help, *
* or upgrade to v95 fp7 *
**************************************************************** |
| Local Fix: |
N/A |
| available fix packs: |
DB2 Version 9.5 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
v95 fp7 |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 19.02.2010
08.04.2011
08.04.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.5.FP7
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.1.0.7
|
 |
| 9.5.0.7
|
|
