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select tablespace_name, file_name, sum(bytes)/1024/1024 table_size from dba_data_files group by tablespace_name,file_name;
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CREATE TABLESPACE data01 DATAFILE '/oracle/oradata/db/DATA01.dbf' SIZE 500M;
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DROP TABLESPACE data01 INCLUDING CONTENTS AND DATAFILES;
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alter database datafile '/path/NADDate05.dbf' resize 100M
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ALTER TABLESPACE NEWCCS ADD DATAFILE '/u03/oradata/newccs/newccs04.dbf' SIZE 4896M;
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