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Problem |
Red Hat Enterprise Linux® version 4.0, Update 1 on
zSeries® has issues with qeth driver over real OSA which can
adversely affect WebSphere® Application Server products. The queth driver
receives a buffer exceeded problem after a number of network sockets have
been opened, which prevents any further communications from taking place
through that network interface. |
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Cause |
This is a known problem with Red Hat Enterprise Linux
version 4.0, Update 1 on zSeries systems. The qeth driver over real OSA on
RHEL 4 Update 1 (kernel level 2.6.9-11.EL) is known to have an issue when
a number of network sockets have been opened. This issue causes the driver
to experience a "buffer exceeded" error that prevents further
communications from taking place over that network interface.
System administrators can test if the system has encountered this problem
by running the ping command. When the system is affected by this
problem, the ping command will return the message: No
buffer space available . |
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Solution |
IBM® Support recommends that clients using the queth
driver over real OSA on Red Hat Enterprise Linux version 4.0 update the
operating system to Update 2 or later to resolve this issue. |
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Cross Reference information |
Segment |
Product |
Component |
Platform |
Version |
Edition |
Application Servers |
Runtimes for Java Technology |
Java SDK |
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