RO97315 R11.5 SP00 LEVEL SET #4 may be applied to 11.5 at any level since GA (R11.5 - GENLEVEL 0905 - SP0) and will bring the server up to current maintenance (all fixes through RO94802//MAR 03 2017, the last actual code update).
Please note as this is a single APAR for all components, it cannot be used to update partial installs such as an AdminTool only install. To handle that, the level set would have to have been THREE separate fixes. But per customer request, it was packaged as ONE fix.
This includes a new file, patch_notes_115.txt, that lists all problems addressed by this PTF (like the file that is supplied with Web Viewer 12.1). This file is not installed by the PTF; it is just another attachment for optional download and review.