trying to do the OEL network thing

I am trying to follow the oracle install doc for 11g. Have a OEL 5.1 64 bit system used the default install ( as recommended apparently ) and tried "system-config-packages" where advice from install guide is to "add all of the Legacy Software Development packages" ...

The tool apparently shows me only what I have installed and nothing else ( is it supposed to show other packages from somewhere that I haven't installed yet apparently ? ).

Running the OEL command "update --install oracle validated" I get the following ...

]# up2date --install oracle-validated

Fetching Obsoletes list for channel:
el5_x86_64_latest...
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Fetching Obsoletes list for channel:
el5_x86_64_oracle...
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Fetching rpm headers...
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Name                                    Version

oracle-validated                        1.0.0
5.el5             x86_64

Testing package set / solving RPM
inter-dependencies...
There was a package dependency problem. The message was:

Unresolvable chain of dependencies:

glibc-headers  2.5-18                    requires
kernel-headers
glibc-headers-2.5-18                     requires
kernel-headers >= 2.2.1
oracle-validated  1.0.0-5.el5            requires

The following packages were added to your selection to satisfy dependencies:

Package                                Required by
----------------------------------------------------------------------------
elfutils-libelf-devel-0.125-3.el5.x86_64oracle-validated-1.0.0-5.el5
           elfutils-libelf-devel
gcc-4.1.2-14.el5.x86_64
oracle-validated-1.0.0-5.el5            gcc

gcc-c++-4.1.2-14.el5.x86_64
oracle-validated-1.0.0-5.el5            gcc-c++

libaio-devel-0.3.106-3.2.x86_64
oracle-validated-1.0.0-5.el5            libaio-devel

libgomp-4.1.2-14.el5.x86_64
gcc-4.1.2-14.el5                        libgomp

unixODBC-devel-2.2.11-7.1.x86_64
oracle-validated-1.0.0-5.el5            unixODBC-devel