[Spacewalk-list] Why the PostgreSQL superuser permissions required?

[new_user]

Hallo!
The intallation manual contains info about Postgresql server setup:
https://fedorahosted.org/spacewalk/wiki/PostgreSQLServerSetup
Follow this instruction user for the spacewalk DB shoul be superuser
('createuser -P -sDR spaceuser')

Tell me please - what is the reason to use superuser permissions? What
privillegies the database user should have?

Best regards, Mikhail
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