Well this is interesting.
The 9.5.0.3 PTF requires the following LE fixes:
PI33378: ADD SUPPORT FOR ENTERPRISE COBOL V5.2
Note: you don't need COBOL V5.2, just the following LE updates:
PTF# Reason Listed Size-KB PUT Hiper FMID
-------- ------------------- ------- ---- ----- ---------
UI25310 ORDERED 1749 1502 NO HLE7780
UI26506 PE-RES of UI25310 1743 1504 NO HLE7780
PTF# Reason Listed Size-KB PUT Hiper FMID
-------- ------------------- ------- ---- ----- ---------
UI25311 ORDERED 1749 1502 NO HLE7790
UI26507 PE-RES of UI25311 1743 1504 NO HLE7790
Ed