Search notes:

ORA-01045: user ... lacks CREATE SESSION privilege; logon denied

This error is thrown if a users wants to log on to an Oracle database but lacks the create session system privilege.
The required privilege can be given to this user with a
grant create session to THE_USER;

See also

ORA-01017: invalid username/password; logon denied
ORA-28000: The account is locked.
Other Oracle error messages

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