Hi Dinali,
Taskcluster01 value ALLINONE was very old parameter setting and is not usual anymore.
All in one means that all database Tasks are running in only 1 thread - which is nonsense in a Multi CPU environment.Today, even in single CPU systems we would not
recommend to use the ALLINONE setting
If this parameter was changed manually it will never been changed implicitely. But param_extgetall USEDDEFINED=YES did not show the user modified flag.
I'm in dicussion with my Dev support Colleague Yashwanth to find out the reason for this historical setting. The parameter history of KernelVersion could be helpful as well.
So I think we can close this request here.
Regards, Christiane