Enter user-name: connect as sysdba
Enter password:

Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.3.0.0.0

SQL> alter user wojciech identified by nowe_haslo
2
SQL> connect
Enter user-name: wojciech
Enter password:
ERROR:
ORA-01017: niepoprawna nazwa uzytkownika/haslo; odmowa zalogowania

tnsnames.ora Network Configuration File: E:\Pobrane\WINDOWS.X64_193000_db_home\NETWORK\ADMIN\tnsnames.ora

Generated by Oracle configuration tools.

LISTENER_WWWOR =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1522))

ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1522))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
)
)

WWWOR =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1522))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = wwwor)
)
)

Ok. rozwiazane. Dziwne. Zmienilem HOST na 0.0.0.0 ale ponadto musialem utworzyc nowego uzytkownika za pomoca c## ktos wie dlaczego? A i w hasle moim tworzonym przy instalacji byla kropka. :P