alter_tablespace

alter_tablespace 
      ::= 
      "alter" "tablespace" tablespace_name 
      ( ( "add" "datafile" file_spec_list ) 
      | ( "rename" "datafile" file_list 
      "to" file_list ) 
      | ( "default" "storage" storage_spec ) 
      | ( system_status ) ) 

[rule list]
This rule is call by

alter_command