Stored package/procedure to drive APEX pages?

Not sure if this is possible with 10G express Edition- however would also like to know if you can do this with the full blown database.
I have a stored procedure that utilizes the pl/sql packages that contain http calls.
I want to have this package run and render the web pages. The package is dynamic and allows users to create their own queries after selecting a table.
I see how to put an anonymous block into your page. How do you reference a stored package/procedure that is store in the database?
In Oracle app server the url is something like
http://machine.com:7778/dad/myproc.main
How do you put this into an Apex page?
Thanks

1) Why do you want to do such a thing? Is not the point with apex that it generates the html you need? On the other hand if you want only part of the page to be generated by your pl/sql then you can just use the sql or pl/sql output as the source for a text fiield. See [this post|http://forums.oracle.com/forums/message.jspa?messageID=3349966#3349966]
2) This should probably be asked in the [apex forum|http://forums.oracle.com/forums/forum.jspa?forumID=137]

Similar Messages

Unable to use the values returned by a PL/SQL stored procedure in a XSQL page

Hi,
I've been messing around with XML and XSQL in particular. I was trying to write a xsql page to display a report with account totals...I have the following .xsql which calls a PL/SQL stored procedure :
<?xml version="1.0"?>
<xsql:query connection="pfcdm" xmlns:xsql="urn:oracle-xsql">
<xsql:set-session-param name="zasset_total" value="100">
<xsql:dml connection="pfcdm">
rraman.sp_vw_id(zasset_total,zinvm_total,zmkt_val);
</xsql:dml>
</xsql:set-session-param>
select 'Asset total is {@zasset_total}' as "ASSET_TOTAL" from dual
</xsql:query>
My procedure sp_vw_id returns the values that it should. But, I am not sure how to declare variables within a page, and to output the return values. There is very scanty documentation on the usage of <xsql:dml> or <xsql:ref-cursor-function>.
Any response would be greatly appreciated.
Thanks,
Raja

Here is the example from the Oracle9i (complete rewrite) of the XSQL Chapter in our Oracle documentation.
Question
I using <xsql:dml> to call a stored procedure which has one OUT parameter, but I was not able to see any results. The executed code results in the following statement:
<xsql-status action="xsql:dml" rows="0"/>
Answer
You cannot set parameter values by binding them in the position of OUT variables in this release using <xsql:dml>. Only IN parameters are supported for binding. You can create a wrapper procedure that constructs XML elements using the HTP package and then your XSQL page can invoke the wrapper procedure using <xsql:include-owa> instead.
For an example, suppose you had the following procedure:
CREATE OR REPLACE PROCEDURE addmult(arg1 NUMBER,
arg2 NUMBER,
sumval OUT NUMBER,
prodval OUT NUMBER) IS
BEGIN
sumval := arg1 + arg2;
prodval := arg1 * arg2;
END;You could write the following procedure to "wrap" it, taking all of the IN arguments that the procedure above expects, and then "encoding" the OUT values as a little XML datagram that you print to the OWA page buffer:
CREATE OR REPLACE PROCEDURE addmultwrapper(arg1 NUMBER, arg2 NUMBER) IS
sumval NUMBER;
prodval NUMBER;
xml VARCHAR2(2000);
BEGIN
-- Call the procedure with OUT values
addmult(arg1,arg2,sumval,prodval);
-- Then produce XML that encodes the OUT values
xml := '<addmult>'| |
'<sum>'| |sumval| |'</sum>'| |
'<product>'| |prodval| |'</product>'| |
'</addmult>';
-- Print the XML result to the OWA page buffer for return
HTP.P(xml);
END;This way, you can build an XSQL page like this that calls the wrapper procedure:
<page connection="demo" xmlns:xsql="urn:oracle-xsql">
<xsql:include-owa bind-params="arg1 arg2">
BEGIN addmultwrapper(?,?); END;
</xsql:include-owa>
</page>This allows a request like:
http://yourserver.com/addmult.xsql?arg1=30&arg2=45
to return an XML datagram that reflects the OUT values like this:
<page> <addmult><sum>75</sum><product>1350</product></addmult>
</page>

Calling a stored workspace procedure/function in page template

I have an unusual puzzle. I am trying to find a way to call a stored procedure or function in a page template; ie, through HTML/javascript.
I maintain a website with several dozen applications and I currently have the page templates in all of these applications subscribed to one master template, so that changes can be made in one place and implemented across all the applications. So far, the only content I can display on every page in every application through page template subscription is static content; dynamic content (ie content generated based on data in the database) is implemented page-by-page (or application-by-application).
I'm wondering if there is a way to call stored procedures/functions from the page template to create dynamic content (based on the :APP_USER identity, for example). htmldb_Get() doesn't seem to be helpful, because as far as I can tell it only calls on-demand application processes, not workspace procedures/functions.
Is there any way at all that a workspace procedure/function can be called directly from the page template (eg with a javascript function of some kind)? Again, I am trying to avoid having to use any application/page-level apex entities (items, processes, etc) so that I can just put the javascript or whatever in the page template and refresh all the applications in my workspace.
Thanks in advance!
Jonathan Cole
PS - I am currently using v3.1

Just to add the owner in output :
SCOTT@demo102> ed
Wrote file afiedt.buf
1 select owner, table_name, ltrim(max(sys_connect_by_path(column_name,','))
2                     keep (dense_rank last order by position),',') as PKcolumns
3 from
4 (select a.owner, a.table_name, b.column_name, b.position
5   from all_tables a, all_cons_columns b, all_constraints c
6   where a.owner=b.owner
7   and   a.table_name=b.table_name
8   and   b.owner=c.owner
9   and   b.constraint_name=c.constraint_name
10   and   c.constraint_type='P'
11   and   a.table_name in ('SDO_COORD_AXES','EMP'))
12 group by owner, table_name
13 connect by prior owner = owner and prior table_name = table_name and prior position = position - 1
14* start with position = 1
SCOTT@demo102> /
OWNER                          TABLE_NAME                      PKCOLUMNS
MDSYS                          SDO_COORD_AXES                  COORD_SYS_ID,ORDER
SCOTT                          EMP                             EMPNO
SCOTT@demo102> Nicolas.

Execute procedure on oracle apex online

Hi All
CREATE OR REPLACE PROCEDURE TEST_PROC
AS
V_FNAME EMPLOYEES.FIRST_NAME%TYPE;
BEGIN
SELECT FIRST_NAME INTO V_FNAME FROM EMPLOYEES
WHERE FIRST_NAME = 'JOHN';
DBMS_OUT.PUT_LINE(V_FNAME);
END;
I have made this procedure on sql worksheet of http://apex.oracle.com/ on my account.
when i gave EXECUTE TEST_PROC; and CALL TEST_PROC; command to exeute this procedure I'm getting following error ORA-00900: invalid SQL statement.
please tell how can i run this procedure.
thanks in advance.
regards
Neeraj

Some basic concepts first. Apex is a suite of PL/SQL procedures and functions and packages and database tables. Apex runs totally inside the database as stored procedural code.
What makes it unique and different is that the procedures are called by a web browser URL. This is received by Apache and passed to a module called mod_psql. This module processes the URL from the web browser, determines what database to connect to and what stored procedure call to make.
Inside the PL/SQL environment there is a set of web packages - and a buffer area that can be used to create dynamic web pages. Apex PL/SQL code executes and creates a dynamic web page/web content in this buffer. The code terminates.
The mod_plsql module in Apache then reads this buffer from the Oracle session and it streams the content to the web browser.
DBMS_OUTPUT is not specifically supported by mod_plsql as it is another buffer area (quite primitive in use and interface). It supports a basic console output display for PL/SQL code - and is typically use by session-based clients like TOAD, SQL*Plus and SQL-Developer.
So if you want a web-enabled PL/SQL procedure to display data on the web browser, your code needs to write to the web buffer in PL/SQL and not the DBMS_OUTPUT buffer. Writing to the web buffer can be done using the HTP.prn() call.
Here's a very basic example of outputting data to a web browser using custom PL/SQL code. Create a Apex page. On this page create a text item called something like P1_FIRSTNAME. This enables the web user to supply a parameter value to your PL/SQL procedure.
Create a dynamic PL/SQL region on the page, that calls your procedure:
begin
--// if the user supplied a firstname, we call the procedure to process the data
if :P1_FIRSTNAME is not null then
MyTestProc( firstName => :P1_FIRSTNAME );
end if;
end;The user procedure that receives and processes the data, and supplied web output, will look something like the following:
create or replace procedure MyTestProc( firstName varchar2 ) is
cnt integer;
begin
htp.prn( 'You have entered the search criteria: '||firstName||'<br> ');
select count(*) into cnt from emp where first_name like firstName;
htp.prn( 'Number of matching employees: '||to_char(cnt)||' row(s)<br> ');
end;

How to get values from a stored package variable of type record ?

Sir,
In my JClient form, I need to get values from a database stored package variable of type record. And the values are retained in the JClient form for the whole session. The values are copied only once when the form is started.
What is the best way to do that ?
Thanks
Stephen

Stephen,
not sure what your model is, but if it is Business Components, I think I would expose the properties as a client method on the application module. This way all JClient panels and frames will have access to it. You could use a HashMap to store the data in teh app module.
If JDBC supports the record type, then you should be able to call it via a prepared SQL statement. If not, you may consider writing a PLSQL accessor to your stored procedure that returns something that can be handled.
Steve Muench provides the following examples on his blog page
http://otn.oracle.com/products/jdev/tips/muench/stprocnondbblock/PassUserEnteredValuesToStoredProc.zip
http://otn.oracle.com/products/jdev/tips/muench/multilevelstproc/MultilevelStoredProcExample.zip
Frank

Using stored packages in report triggers

Hi,
-- Among other things, my stored packages "per7x" is
-- capable of creating a rather complex cross-table.
-- A particular function returns this as a pl/sql table
-- of integers (index by binary_integer).
-- Another sub-program of the package creates a persistent
-- pl/sql table representing the cross-table. This is the
-- procedure "init_main" that has some parameters with
-- default values. The function "get_main_value" returns
-- a particular row/column value. (Of course, the table
-- persists only for the duration of the database session.
-- The following code runs fine from SQL*Plus
-- (per7x.init_main takes a few seconds to complete, then,
-- the next statement delivers the expected result):
set serveroutput on;
begin
per7x.init_main;
dbms_output.put_line(per7x.get_main_value(1,1));
end;
-- But now for some serious business. I want to retrieve
-- these values from within a Developer/2000 Reports
-- application. I figured calling "per7x.init_main" at
-- the BeforeReport trigger and I would call
-- "per7x.get_main_value" at the FormatTrigger level.
-- But... calling the initialization procedure, as in:
function BeforeReport return boolean is
begin
per7x.init_main;
return (TRUE);
end;
-- results in:
-- R30DES32 caused an invalid page fault in
-- module PLS234.DLL at 0137:0050827c.
-- and Reports will be shut down.
-- the message:
-- REP-1401: 'beforereport'. Fatal PL/SQL error occured.
-- occurs when attempting to make a local copy of the
-- pl/sql table instead of using the persistent structure.
-- What goes wrong here??
-- I am connected to: Oracle Workgroup Server 7.3.2.3.1
-- with the Distributed Option, PL/SQL version 2.3.2.3.0
-- (Windows NT 4.0)
-- I use Developer/2000 version 2.0 (Reports 3.0.4.6.3)
-- on Windows 95,
-- SQL-Plus is version 3.3.4.0.0
Any help would be very much appreciated,
Paul Ramsteijn,
Renal Replacement Registry of the Netherlands (RENINE).
E-mail: [email protected]
null

hi,
i'm back.. :)
i attempted to use the following pl/sql code in a pl/sql process.
begin
for i in 1..apex_application.g_f01.count
loop
    apc_user_pkg.update_user_role ( p_user_role_id     => apex_application.g_f02(i)
                                   ,p_start_on         => apex_application.g_f05(i)
                                   ,p_end_on           => apex_application.g_f06(i)
                                   ,x_last_updated_on => apex_application.g_f09(i)
                                   ,x_last_updated_by => apex_application.g_f10(i) );
end loop;
end;however, it doesn't seem to be working properly.. it doesn't update the table.. after the page refreshes, the old data comes back and not the new one.
what am i doing wrong?
regards,
allen

Get CGI env variables in a database procedure using new APEX Listener

I already posted this question in the Apex Listener forum and still no replies after one week. The original post is here:
Get CGI environment from APEX Listener within database procedure
So please forgive me for posting in this forum as well, but there is a lot more activity here.
I'd like to know how I can get the CGI environment from the APEX Listener. For example, if I want to write a procedure that inserts into a table the originating IP Address of the client making the web request, how do I get it?
I am familiar with the Oracle Http Server and mod_plsql, and I know how to call OWA_UTIL.GET_CGI_ENV to get this sort of information. How do I do it using the APEX Listener?
In particular, how do I do this when calling a custom procedure (not in an Apex workspace)? When I try it now, I get an error from owa_util. The cgi env seems to be empty or not initiated (owa.num_cgi_vars is null or zero).
Specific set-up:
I have a web server running the latest JDK, Glassfish, and 1.1.4 Apex Listener. It connects to another server running the latest 11.2 database. Apex is installed and running, but I am not really developing a traditional Apex application in a workspace. I mainly use it like you would use mod_plsql. In other words, I have custom pl/sql packages that are called directly via URL. The requests are forwarded by the listener to the database, and the DB executes the procedure and returns output using htp.p to send text back to the browser. And it works just fine for this purpose. But if I want to call GET_CGI_ENV to get information like the IP Address, web browser making the request, etc. I can't seem to get it with the OWA packages.
Can anyone shed some light on this? If Apex Listener is not designed to do this, is there some kind of workaround I can use to forward this sort of information to the database for each request?

I have not tried owa_util.print_cgi_env from SQL Workshop yet, as I have not created an APEX workspace. I have had no need for a workspace because of the way I am using APEX as a method for calling custom packages and stored procedures. In other words, I am using APEX strictly for the mod_plsql functionality. I just use it to forward requests to the database to execute pl/sql code, but I don't develop anything in APEX. My application is a web service with no screens and no direct user interface, which is why I did not need to create APEX forms. The front end is a mobile app that makes calls to the web service.
But I have tried calling owa_util.print_cgi_env in one of my stored procedures and it returns no data, even when calling it from the web front-end.
So I am beginning to believe that if the OWA toolkit works with APEX, then it must only be enabled when invoked within a workspace. Stand-alone procedures can be called via APEX, but apparently doing so does not initiate the CGI env variables. This set-up used to work under the OHS with mod_plsql. The embedded pl/sql gateway also works this way.
Is there a procedure call that APEX is making to set the environment before each SQL Workshop request?
My security model currently blocks access to all packages and procedures except for my custom packages. I am using the APEX Listener configuration to allow only the packages listed by name in a white list. But I thought I allowed all access when I first tried calling the OWA packages. I'll have to try that again.

Calling Apex Page

Hi friends,
I have integrated APEX with ebis - R12 with the help of Rod Document and now i can redirect to the APEX page from the ebiz menu. Now whether it is possible to call the APEX page from the workflow notification.
As now the APEX is within Ebiz. Whether now it is possible to call the APEX page (via) Workflow notification.
As anyone done this before.
Brgds,
Mini

Hi Andrew,
have you other self defined html input tags in your form? When you look into the Apache log file you will probably notice that mod_plsql isn't able to map this field names to parameters of the F procedure.
BTW, have you already looked at the PayPal Packaged Application and the White paper which explains it? http://www.oracle.com/technology/products/database/application_express/packaged_apps/packaged_apps.html#PAYPAL
Patrick
My APEX Blog: http://inside-apex.blogspot.com
The ApexLib Framework: http://apexlib.sourceforge.net
The APEX Builder Plugin: http://sourceforge.net/projects/apexplugin/

Creating APEX pages via SQL scripts..

Hi Guys,
I want to create APEX pages via SQL Script. The main reason to have this option that I have couple of applications which has XML files for screen definition where I can read all screen properties (field types, sizes, caption, etc...)
Is there any documentation or help stuff where I can find the APEX page definition tables? I found something like WWV tables but I couldnt figure it out properly...
Any help ?
Thanks,
Osman...

We have built our entire apex app in a similar way. We create the shell apex pages using apex (eg, Item Detail, Insert Item, etc.). Then we create a PL/SQL region on the page. The PL/SQL region simply calls a stored procedure to render the controls on the page. For example, our regions looks similar to this:
begin
apex_pkg.sp_render_page('ITEM_DETAIL',Param1,Param2,Param3);
end;
The sp_render_page procedure in the database generates the appropriate HTML for the page. This procedure reads meta data in the database (eg, field label, field size, field type, field position, etc.) and renders the same HTML that apex would render if the apex page was manually created. For example, in the procedure we use lines similar to these:
HTP.p(apex_item.text(...))
HTP.p(apex_item.select_list_from_query(...))
Because the procedure is reading meta data, the apex page is dynamic and can be different for different users or clients.
Darrin

Where is the portal30_sso plsql stored package security mechanism ?

Hi All,
I'm trying to make new signon page thru a plsql stored package routine test.login , to be recorded in wwsso_ls_configuration_info$ table and therefore to be called by the user browser on each authentication ( i.e. http://machine:port/pls/dbname_portal30_sso/test.login )
but issuing this address causes 404 page not found, meaning that there is some security repository somewhere in which I have to insert my own "test.login" procedure in.
In other words, I'm seeking the same mechanism like FND_ENABLED_PLSQL table of the standard plsql cartridge supplied with the eBusiness Suite, in the portal30_sso schema.
Any help will be much appreciated,
Gilad.

Actually you will get the same message if your Package fails in execution. The login page package can infact be in any schema assuming that you are not accessing packages within your package which the owner does not have rights too. In effect the Login page takes the appropriate arguments , displays them, then posts the response to the Login procedure.
The "How do I customize my Sign-On/Off User Interface in Portal 9.0.2" technote on Portalcenter.oracle.com has a step by step discussion of the process in PL/SQL.

To use Entity Bean or Oracle stored Package?

Currently, in my project, Weblogic8.1 and Oracle is used, but lots of business logic is implemented using Oracle stored Packages, many of these packages have a package level readonly lookup table(like index-by table or nested table), which is populated with data from database, once the package is called, and is accessed very often in subsequent calls of stored procedures.
Since, in Weblogic server, a connection pool is maintained, and those package level lookup tables would be stored as session data in oracle PGA, I'm afraid this might cause oracle database server to be overloaded.
to fully take advantage of middleware cache service that weblogic provide, should I move those business logic out of oracle and implement them using like read only entity bean?
any help appreciated!

Its very hard to say without knowing the usage patterns of the data. It sounds like you have a lot of read-only entities. These could be spread around a WLS cluster, therefore there is more scalability and performance with this option. However, I would not neccessarily rewrite business logic from SP into EJB just for middle-tier caching.
If its a DB intensive app with lots of SQL, then if the calls are within SP's, there is only 1 call from WLS and the DBA ought o be able to tune the DB usin read-ahead and other DBA semantics. If there is locality of reference in the data, again, DB can use read-ahead better than WLS, although RO cache in middle is more scalable than DBMS.
I wouldnt rewrite business logic from SP to EJB/Entity beans to take advantage of cache, especially if there is no locality of read-only reference to data. Oracle could do this better in my opinion, especially if SP's already exist
Need for information on the usage patterns of the data - how is it CRUD'd.
I would use-case the steel threads and put them under test load to see if the SP's really are an issue, since this is an architecture decision. What state is the project at? Live/Dev? Inception?

Error While Creating Block on Package Procedure

Hi
When I try to create a block on a package Procedure I get the following error
ifbld60.exe has generated errors and will be closed by Windows.
You will need to restart the program.
An Error log is being created,
and forms closes.
Is it something to do with Forms problem or with Windows? Is there a patch available for this problem or its a OS bug. The client I am testing this form from is Windows 2000 Professional.
Thanks for your help
Diogo

Hi
You cannot directly insert object in Stored Procedure universe,Whatever object you are using to define your derived table,you have to include all those objects into the universe first.
From the below image you can see that i have 3 derived tables ,but whatever objects i am trying to use all those i have inserted into the universe.
Try to build like this save and export.
Let me know if you face nay error

Error while accessing oracle packaged procedure in crystal report./ How to

Hi,
When i tried to call a packaged procedure in crystal reports for .net, i am unable to access it.
i am getting error as 'unknown query engine'
In that packaged procedure i have a two IN parameters and one OUT TABLE parameter ( which is declared in package specification )
And when selecting the packaged procedure in crystal report,the wizard shows all the parameters like the IN parameters, and when i just leave it blank. i unable to set into report.
ie., the OUT table type is shown as IN paramters (Actually it is an output and has field fields in it.)
And No fields are coming in the Fields Explorer of crystal reports in .net.
can you provide any help.
thanks and regards
Mohan Raj K.
Actually using vs.net 2005 prof.
Message was edited by:
mohanraj_k

Actually the OUT Parameter type in the stored
procedure is showing as IN Parameters and asking
for input values in the crystal report creation
wizard(while selecting the
database,connection,storedprocedures/qualifiers).That sounds like a problem on the .net / crystal report creation wizard side of things. Oracle no doubt recognises them as OUT parameters, so it's not Oracle at fault. I would guess the .net stuff is just querying the data dictionary to see what parameters there are rather than differentiating between the INs and OUTs.

A data source based on a file stored in a network drive

Hi,
I created a new Crystal report using Crystal Report Designer XI R2. In the beginning, my data source is from a Excel file in local device like c:\.
After I moved the file to a network device then recreated a report, it couldn't connect to the data source. Can anyone know how to sort it out?
Thank you,

Hi Jin,
Since the Excel file is stored on a Network Drive the Crystal Reports page server, cache server, and job server, and the input and output file repository services should all be configured to be run by a domain user account which has local administration privileges. This should allow the report to access the excel file online.
Hence you can try of these:
The way to get this to work is to:
a) set the job server and cache server to run under a domain account that has local admin rights (so it should appear as DOMAIN\user in the service settings) and
b) when setting the connection in Crystal Reports connect to the share that holds the .xls using the unc path rather than the mapped drive (i.e.
server\folder\file).
Hope this helps.
Shraddha.

Global temporary table in PL/SQL called from APEX page

I have a global temporary table in a PL/SQL procedure that is called from an APEX page.
The global temp table is populated with data as the procedure runs and then at the end of the procedure I do a create_collection_from_query_b to populate a collection with the data from the temp table. (I do this b/c it is much faster than creating the collection and doing an add_member for each row.)
The problem is that there are no commits in my procedure but I cannot get the bulk insert to work unless I define the temp table as on commit preserve rows.
Can anyone shed any light on this issue.
Thanks,
Andrew

alamantia wrote:
My PL/SQL procedure is called from an after submit page process. Does that imply that there is a commit happening after that process is successful?Ultimately, yes.
If the process calls the PL/SQL procedure and the temp table is in the procedure, wouldn't the commit fire after all the PL/SQL code is complete which would be after the bulk insert from the temp table to my collection?Yes, but at any point in the procedure containing code like
:APEX_ITEM := ...or
select ... into :APEX_ITEM from ...or
my_procedure(p_in => ..., p_out => :APEX_ITEM, ...);or
apex_util.set_session_state(...);then APEX will commit whilst maintaining session state.
If you don't have any of these events in the procedure, then test to see if the commit is occurring in <tt>apex_collection.create_collection_from_query_b</tt> prior to creation of the collection.

Stored package/procedure to drive APEX pages?

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