Oracle : Ошибка ORA-28157


28157, 0000, "Proxy user '%s' forbidden to set role '%s' for client '%s'"
*Cause: A proxy user was forbidden to use a role on behalf of a client
through the command ALTER USER GRANT CONNECT THROUGH
WITH ALL ROLES EXCEPT
*Action: Execute the command ALTER USER GRANT CONNECT THROUGH
PROXY to grant the needed role.

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