Will RAC start if the patch number of OS is different on 2 node

Hi Team,

We have 2 node rac where OS version is SUSE Linux Enterprise Server 10 (x86_64) VERSION = 10 PATCHLEVEL = 2.

Now OS team is going to apply SP4 patch on one node and other node should be available with SP2 node.

So is it possible to start the RAC on node 1 and 2 with SP2 on one and SP4 on other.

Oracle version is 11.1.0.7.0.

Oracle Clusterware active version on the cluster is [11.1.0.7.0]

Oracle Clusterware version on node [tdb20] is [11.1.0.7.0]

Thanks,

Ketul Patel