|
Problem IC96366
|
Status: Closed |
A LOCK ON THE NOTIFY LOG OR DB2DIAG.LOG CAN MAKE THE ENGINE SO SLOW THAT IT WOULD LOOK LIKE A HANG |
| product: |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 |
| Problem description: |
A lock by another application or anything else on the notify log
or db2diag.log file can potentially make the engine work very
slow if there are lot of messages being asked to be written to
the log files due to some condition in the engine ( such as lock
escalation ). The engine can become so slow that it would look
like a "hang". The situation is exasperated on a DPF system
where all the nodes are writing to the same db2diag.log or
notify.log file. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 10.5 FP4 or apply the suggested workaround. *
**************************************************************** |
| Local Fix: |
Viable workarounds include:
1) Find out who or what is locking the file(s) and kill that
process OR
2) db2diag -A ( to change the log file ) -- ( but this will help
only if the lock is on db2diag.log file ) OR
3) For DPF systems, have the logs split on Node numbers using
the new functionality of DIAGPATH ( refer Infocenter ) OR
4) For DPF systems, have one local DIAGPATH for each physical
servers OR |
| available fix packs: |
DB2 Cancun Release 10.5.0.4 (also known as Fix Pack 4) for Linux, UNIX, and Windows
DB2 Version 10.5 Fix Pack 9 for Linux, UNIX, and Windows
|
| Solution |
Fixed in release DB2 V10.5 FP4. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 26.09.2013
25.08.2014
25.08.2014 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 10.5.0.4
|
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