That is the responsibility of system administrators. Application developers have no business on a production machine. If your sysadmins don't have the technical skills to diagnose these problems, they are incompetent and must be replaced.
The actual result of this is that the sysadmins are not replaced, and the application developers end up in an emergency conference call at 3am to tell the sysadmins which buttons to click on the production environment, since they’re not allowed access themselves.
DevOps is not a role or role segregation, it’s about aligning incentives and outcomes across functions in an org (hopefully through collaboration, tooling, and knowledge transfer).
The caveat is that if your org is fundamentally broken, none of the above applies or works and it’s all lipstick on a pig.