#
# ps -ef | grep tnslsnr
oracle 401600 1 0 Jan 15 - 0:00 /home/oracle/bin/tnslsnr
oracle 696408 1 0 Jan 15 - 0:00 /home/oracle/bin/tnslsnr
#
# bindprocessor 401600 0
# bindprocessor 696408 1
In the preceding example, the first listener is attached to processor 0 and the second listener is attached
to processor 1.
Processor binding is more difficult when the clients and the Oracle servers run on the same computer
using the two-task pipe driver. Determine the process ID for each server process and manually bind it to a
processor. The administrative overhead is excessive and probably not worth the effort unless the servers
have long process lives.
Since AIX 5L V5.2, the Resource Set API can also be used to ensure the binding of a process on a
particular processor or even a particular set of processors. A resource set is a bundle of system
resources that can consist of one or more processors, one or more memory pools, or a mixture of
memory pools and processors. The lsrset, mkrset, and rmrset commands can be issued to list, create,
and delete resource sets, respectively.
In the following example, the mkrset command is invoked to create a resource set named oracle in the
namespace test with one processor in it. This processor has the logical processor number 0.
# mkrset -c 0 test/oracle
1480-353 rset test/oracle created.
Display the new resource set listed together with the default resource sets in the system global repository
using the lsrset command:
# lsrset -a
sys/sys0
sys/node.01.00000
sys/node.02.00000
sys/node.03.00000
sys/node.04.00000
sys/node.05.00000
sys/node.05.00001
sys/mem.00000
sys/cpu.00000
sys/cpu.00001
test/oracle
The configuration of the newly created resource set can also be viewed with the lsrset command.
The output shows the resource set with logical CPU 0:
# lsrset -vr test/oracle
T Name Owner Group Mode CPU Memory
a test/oracle root system rwr-r- 1 0
CPU: 0
MEM: <empty>
The mkrset command cannot be called to modify an existing resource set. The resource set must be
deleted first.
Tuning IBM AIX 5L for an Oracle Database
4
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