This only affects shops using the MidServer.
Java V8 deprecated some function.
If you try to start the MidServer with Java V8 you'll see the following errors in STDERR:
Exception in thread "main" java.lang.NoClassDefFoundError: sun.io.Converters
...
Caused by: java.lang.ClassNotFoundException: sun.io.Converters 
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				APAR PI63246 has been opened for this problem.
Abstract:  NOCLASSDEFFOUNDERROR: SUN.IO.CONVERTERS RUNNING ARSMSRVR.JAR WITH JAVA 8   
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				Fixes are now available:
PTF#      Size-KB Hiper FMID        
--------  ------- ----- --------    
UI38665       17    NO  H272900     
UI38666       17    NO  H272950     
Ed