Error: ORA-01033 ORACLE initialization or shutdown in progress

First, You will have to wait until the database was shutdown or start-up properly.
Second, If not successes, I will be assuming that some how a data file was corrupted so try this steps:

SQL> shutdown abort

then

SQL> startup nomount
SQL> alter database mount;
SQL> alter database open;

If there will be some errors let me know...

Changing host name inside Oracle XE configuration file

If you change oracle machine host name, the listener can’t run due to error in configuration.
So you need to configure it again manually as:

1. Stop Database Listener and Service
2. Go to installation directory
3. Navigate:

“\app\oracle\product\<oracle version>\server\NETWORK\ADMIN”

4. Edit:“listener.ora”

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(ADDRESS = (PROTOCOL = TCP)(HOST = <new_host_name>)(PORT = 1521))
)
)

5. Edit:“tnsnames.ora”

XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST =<new_host_name>(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
)
)

6. Start the Listener and Service again