create or replace package body create_email
as

function password_hashing (p_username in varchar2, p_password in varchar2)
return varchar2
as
l_password varchar2(4000);
l_salt varchar2(4000) := 'AA8V33PFKQHFZJ4T54HOATVML024FM';

begin

l_password := utl_raw.cast_to_raw(
dbms_obfuscation_toolkit.md5(
input_string => p_password || 
substr(l_salt, 10, 13) || 
p_username || 
substr(l_salt, 4, 10)
)
);
return l_password;
end password_hashing;

function create_new_password (p_email in varchar2)
return varchar2
as
l_password varchar2(12);
l_encrypted_password varchar2(32);
begin
select dbms_random.string('A', 8)
into l_password
from dual;
l_encrypted_password := password_hashing(p_username => upper(p_email), p_password => l_password);
update customer
set encrypted_password=l_encrypted_password
where upper(customer.email)=upper(p_email);
return l_password;
end create_new_password;


procedure email_new_password (
p_email in varchar2,
p_customer_service_email in varchar2,
p_password in varchar2)
as
email_subject varchar(50);
email_body varchar(200);
begin
email_subject := 'Your new password for Online Store';
email_body := 'Dear Customer, '|| chr(10) || 
'Your new password for Online Store is '||
p_password||chr(10)||
'Sincerely, '||chr(10)||' Online Store';
APEX_MAIL.SEND (
p_to => p_email,
p_from => p_customer_service_mail,
p_body => email_body,
p_subj => email_subject
);
commit; 
end email_new_password;

end create_email;
/

create or replace package create_email
as

function create_new_password (p_email in varchar2)
return varchar2;

procedure email_new_password (
p_email in varchar2,
p_customer_service_email in varchar2,
p_password in varchar2);

end create_and_email_new_password;
/

create or replace package body create_email
as

function create_new_password (p_email in varchar2)
return varchar2
as
l_password varchar2(12);
l_encrypted_password varchar2(32);
begin
select dbms_random.string('A', 8)
into l_password
from dual;
l_encrypted_password := password_hashing(p_username => upper(p_email), p_password => l_password);
update customer
set encrypted_password=l_encrypted_password
where upper(customer.email)=upper(p_email);
return l_password;
end create_new_password;

procedure email_new_password (
p_email in varchar2,
p_customer_service_email in varchar2,
p_password in varchar2)
as
email_subject varchar(50);
email_body varchar(200);
begin
email_subject := 'Your new password for Online Store';
email_body := 'Dear Customer, '|| chr(10) || 
'Your new password for Online Store is '||
p_password||chr(10)||
'Sincerely, '||chr(10)||' Online Store';
APEX_MAIL.SEND (              <==== LINE 53
p_to => p_email,
p_from => p_customer_service_mail,
p_body => email_body,
p_subj => email_subject
);
commit; 
end create_new_password;

end create_email;
/

but i had an error at line 53: PL/SQL: Statement ignored !!
What’s wrong this time??? The syntax seems to be correct!!
I start to get the feeling that Oracle doesn’t like me…..

Make sure it is compiled and ‘valid’, and make sure you have the proper permissions to see it and execute it.

And yes, you have to use the <package>.<function> syntax.