Before I forget, this is the command I’m using to mirror the OracleASM RPMs for RHEL5 x86_64:
wget -e robots=off -H -D oss.oracle.com -r -l 1 -nd -c -A.x86_64.rpm \ http://www.oracle.com/technetwork/server-storage/linux/downloads/rhel5-084877.html
The important bits are the -H and -D options, which tell wget that mirroring is allowed across domains (as the RPMs live on oss.oracle.com) and that the only domain to mirror is oss.oracle.com.
To grab the i386 packages, replace -A.x86_64.rpm with -A.i386.rpm -A.i686.rpm:
wget -e robots=off -H -D oss.oracle.com -r -l 1 -nd -c -A.i386.rpm -A.i686.rpm \ http://www.oracle.com/technetwork/server-storage/linux/downloads/rhel5-084877.html