LOGIN into DATABASE without PASSWORD

LOG IN into DATABASE without PASSWORD

sqlplus / as sysdba

SQL> SELECT password FROM dba_users WHERE  username='SCOTT';

PASSWORD

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F894844C34402B67

SQL> ALTER USER scott IDENTIFIED BY abcdefg;

User altered.

SQL> CONNECT scott/abcdefg

Connected.

SQL> select * from scott.emp;

SQL> ALTER USER scott IDENTIFIED BY VALUES 'F894844C34402B67';

User altered.

SQL> conn scott/tiger

Connected.