Hello @David_paul ,
WebSphere is a third-party tool. The manual changes are quite unavoidable. SAS helps you with those instructions as guideline, but it is not really SAS' end responsibility. Here is what I'd suggest:
a) follow the instructions, as it is what is supported by SAS Tech Support
b) use a grep tool, to crawl and change hostnames following a pattern, under your own risk
c) check IBM's guidelines, or contact IBM support. An example of something I quickly found google-ing: https://www.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.nd.multiplatform.doc/ae/t...
Nonetheless, I understand this is not the most convinient. For the time being, try to resolve it the best you can. But thinking about the future, you might want to move to SAS 9.4, where SAS provides and manages by itself the Mid-tier, with it's own out-of-the-box provided Web Application Server, Enterprise sized. Just think about that one.
This last topic is specially relevant, as the versions of SAS and WebSphere you are using might be going out of A-level support, if it did not happen already.
Best regards,
Juan