When you encounter the error ORA-28001: the password has expired, execute below queries to resolve this. export ORACLE_SID=< databaseName> sqlplus / as SYSDBA SQL> alter profile default limit password_life_time unlimited; SQL> alter user <userName> identified by <password>; SQL> commit; SQL> exit;
To alter the existing datafile in Oracle database, use below query. alter database datafile '/u01/app/oracle/oradata/XE/system.dbf' autoextend on maxsize unlimited;
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