DB2 FOR LUW / DB2FORLUW / A10 - DB2

It is possible to observe a drop in performance when there are 
many concurrently running tasks requiring new extents to be 
allocated in a single tablespace. 
DB2 searches the Space Map Pages to find free extents. 
When there are no free extents tracked in these SMP pages, it is 
possible that DB2 performs repeated searches on SMP pages known 
to contain no free extent references. 
This can lead to a contention for the different tasks requiring 
a new extent, when there is a long chain of such SMP pages. 
( e.g. in a large tablespace with a small extent size.  )

See APAR description

Create a tablespace with a larger extent size thereby reducing 
the number of SMP pages required. 
Split tables into several table spaces.

DB2 Version 10.1 Fix Pack 3 for Linux, UNIX, and Windows
 DB2 Version 10.1 Fix Pack 4 for Linux, UNIX, and Windows
 DB2 Version 10.1 Fix Pack 3a for Linux, UNIX, and Windows
 DB2 Version 10.1 Fix Pack 6 for Linux, UNIX, and Windows
 

Problem first fixed in DB2 10.1 Fix Pack 3

See APAR description

Vorgänger  : APAR is sysrouted TO one or more of the following: IC95224 IT05541 
Nachfolger : 

Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:

02.04.2013
18.11.2014
18.11.2014