Enable Oracle apps Diagnostics-> Examine
Step 1
Navigate to System Administrator responsibility> Profile> System>
Step 2
Enter profile name: Utilities:Diagnostics
Enter Application User for whom you want to enable Diagnostics-> Examine
Step 3
Give Yes at User level and Save the Changes.
You can set Yes at Site level also if you want to enable this option for all Oracle application users
Step 4
Navigate to System Administrator responsibility > Profile > System >
Enter profile name: Hide Diagnostics menu entry
Enter Application User for whom you do not want to hide Diagnostics menu entry