Database 19c preinstall requirements

Hi,

"Health Check/Validation for "Oracle Database 19c Preinstallation (Linux)" tells me:

compat-libstdc++ not found, librdmacm-devel not found

I am on RHEL 7.9 & on checking & trying to install the package, I get:

rpm -qa | grep compat-libstdc++
~~~
compat-libstdc++-33-3.2.3-72.el7.x86_64
~~~

rpm -ivh --force librdmacm-devel-1.0.20-1.0.6.el7.x86_64.rpm
~~~
  warning: librdmacm-devel-1.0.20-1.0.6.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
error: Failed dependencies:
        librdmacm-devel < 22.4-5.el7 is obsoleted by (installed) rdma-core-devel-22.4-5.el7.x86_64
~~~

How can I resolve both issues?

Thanks,

Raymond