alter_user_spec

alter_user_spec 
      ::= 
      ( ( "identified" "by" password ) 
      | ( "default" "tablespace" tablespace_name ) 
      | ( "temporary" "tablespace" tablespace_name ) 
      | ( "quota" ( ( n "k" | "m" ) | "unlimited" ) 
      "on" tablespace_name ) 
      | ( "profile" profile_name ) 
      | ( "default" ( role_list 
      | ( "all" [ "except" role_list ] ) 
      | "none" ) ) 
      ) 

This rule is called by

alter_user