EBS 12.2: How to Enable Java Web Start for Java Applet Support in Modern Browsers

Step – 1: Apply All EBS 12.2 relevant Patches to your EBS Application from below JWS MOS Doc:
Using Java Web Start with Oracle E-Business Suite(Doc ID 2188898.1)

Step – 2: Enable Java Web Start :

Source EBS Run FS Environment ( 12.2 )
REGENERATE JAR FILES FORCE = YES

Step -3 : UPDATE EBS CONTEXT FILE VALUE OF s_forms_launch_method FROM browser To jws

BEFORE
[appl8017@erpclone ~]$ cat $CONTEXT_FILE | grep s_forms_launch_method
browser
[appl8017@erpclone ~]$

AFTER
[appl8017@erpclone ~]$ cat $CONTEXT_FILE | grep s_forms_launch_method
jws
[appl8017@erpclone ~]$

Step-4 : FINALLY RUN AUTOCONFIG

Step-5 : Start EBS Services