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SELECT DBMS_METADATA.GET_DDL('TABLE',u.table_name)
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SELECT DBMS_METADATA.GET_DDL('INDEX',u.index_name)
from USER_INDEXES u;
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CREATE TABLE TBL_TEST
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ID    NUMBER,
NAME VARCHAR2(100 BYTE),
PID   NUMBER    ......

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SQL> show user
USER is "SYS"
SQL> create user t1 identified by t1;
create user t1 identified by t1
*
ERROR at line 1:
ORA-01920: user name 'T1' conflicts with another user or role name
SQL> drop user t1 cascade;
User dropped.
SQL> create user t1 identified by t1;
Us ......

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