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Showing posts from July, 2006

Installing APEX 2.2 on XE

As you might have noticed APEX 2.2 is available for download. On the download site nowhere is stated that is doesn’t work for on XE, but installing on XE fails directly. How to solve this?

This is due to the following lines in the upgrade procedure in the file apexins.sql:
declare
t_edition varchar2(30);
edition_is_xe exception;
begin
--select edition into t_edition from v$instance;
execute immediate 'select edition from v$instance' into t_edition;
if nvl(t_edition,'x') = 'XE'
then
dbms_output.put_line('---------------------------------');
dbms_output.put_line('- Ap Ex cant be installed in Express Edition.-');
dbms_output.put_line('-------------------------------------');
raise edition_is_xe;
end if;
exception
when edition_is_xe then raise;
when others then null; -- no edition column, not xe
end;
/Once the lines are REM’med out the upgrade process runs fine. After finishing the other steps from the upgrad…

How to create neatly formatted Excel documents using PL/SQL?

If there is a requirement to produce output from an application into Excel, you would probably create a CSV (Comma Separated File) with the data and start Excel to show the data - at least that's what I did...until now. The drawback of this solution is that you could only produce data and no nice layout. But Excel is also capable of opening HTML-files and using this you could create Excel files with data and magnificent layout!

Let me give an example:
1. Create a procedure to show the data in formatted in an HTML table.

CREATE OR REPLACE PROCEDURE display_emp_list IS
v_emp_count NUMBER(5);
v_empno NUMBER(8);
v_ename VARCHAR2(50);
v_job emp.job%TYPE;
v_sal emp.sal%TYPE;
v_bg_color VARCHAR2(10) := '';
CURSOR c_emp IS
SELECT empno,
initcap(ename),
job,
sal
FROM emp
ORDER BY ename;
BEGIN
SELECT COUNT(*)
INTO v_emp_count
FROM emp;
owa_util.mime_header('application/ms-excel', FALSE);
htp.p('Content-Disposition: filenam…