12.1.1 upgrade patch performance issue

Installing below two patches in preinstallion mode which provide you with the required class files to avoid the performance issue.
1. 8597080
2. 8576725

Apply Patch 9179588 (9179588:R12.AD.B), following the instructions in the patch readme.Apply Patch 7303029 (7303029:12.1.0) in preinstall mode and run the new American English upgrade patch driver, following the instructions in the patch readme. 798258.1

Regards,
Phani.K