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drop tablespace tablespace_name;
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drop tablespace tablespace_name including contents;
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drop tablespace tablespace_name including datafiles;
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drop tablespace tablespace_name including contents and datafiles;
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drop tablespace tablespace_name including contents and datafiles CASCADE CONSTRAINTS;
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create or replace directory exp_dir as '/tmp';
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grant read, write on directory exp_dir to eygle;
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create table device
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dept varchar2(50) not null
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tablespace users
/
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SQL> select name from v$datafile;
NAME
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