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SQL> alter tablespace users nologging;
Tablespace altered.
SQL> select default_tablespace from dba_users where username='BOSON';
DEFAULT_TABLESPACE
------------------------------
USERS
SQL> show users;
SP2-0158: unknown SHOW option "users"
SQL> show user;
USER is "BOSON"
SQL> create table test_logging (id number) logging;
Table created.
SQL> alter table test_logging nologging;
Table altered.
SQL> alter table test_logging logging;
Table altered.
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