Patch 28948407

Hi,

We want to apply patch: 28948407.

In readme I see:

2. Oracle E-Business Suite OAF prereq steps [required]

This patch requires additional patches to have been successfully applied to your

system before it can be applied. The required pre-req patch is as listed below.

20007138:R12.TXK.C.

3. Oracle E-Business Suite OAF pre-install steps [required]

This patch requires additional patches to have been successfully applied to your

system before it can be applied. The required pre-req patch is as listed below.

21037166:R12.OWF.C.

My questions:

1-What is OAF?

2-Should we apply 21037166 and 20007138 patches before applying 28948407?

Thanks and regards.