Sequences in Master-Detail Forms

Whenever I try to use Sequences in the default values for the column (#schema.sequence.nextval) in Master Detail Forms I get the following error :
Exception from wwv_generate_component.build_procedure (WWV-01821)
Error creating module: ORA-06502: PL/SQL: numeric or value error:character string buffer too small (WWV-16042)
Error creating module: ORA-06502: PL/SQL: numeric or value error:
Error adding module attributes: ORA-06502: PL/SQL: numeric or value error: character string buffer too small (WWV-16043)
Is this a bug in Portal ?
Has anyone faced this problem before ?
Any ideas or suggestions would be appreciated.
thanx.
null

hi there,
I got the same error, but i fixed it with a workaround by inserting the sequence in an insert trigger. It works better this way since the values of the sequence dont go up as fast as when you use (#schema.sequence.nextval in the form. This way I can be sure the sequence is only raised when an actual insert is made and not evertime the form is opened, which causes the nextval to be triggered.
hope this helps.
kasper

Similar Messages

Portal Master-detail form how to auto assign detail record sequence number

Portal Master-detail form how to auto assign detail record sequence number.Please help me?

You can just read the following section
Can I specify a sequence number generator as the default value for a form column?
Yes. Enter the following in the "default value" field for the column:
#<schema name>.<sequence name>.nextval
where <schema name> is the name of the schema containing the sequence, and <sequence name> is the name of the sequence. The entry is preceded by a "#".
For example, if the schema name is "SCOTT", and the sequence name is "CUSTOMER_SEQ", the default value entry is:
#SCOTT.CUSTOMER_SEQ.NEXTVAL
same way you can do for master - detail form.
for more information on forms please refer the following URL.
http://otn.oracle.com/products/iportal/htdocs/portal_faq.htm#BuildingApplications
hope it helps.

Many to many master detail form

Hi All,
APEX 3.1.2 on SuSE 10 Oracle 10.2.0.3 64 bit
I am new to APEX, but used OAS several years ago. Back then I hardcoded all htp.print commands. We are building an intra-team application to track system relationships. For example,
web interface 3 --> application server 2 --> database 6
Our tables are similar to the following
SYSTEMS
system_id (unique sequence)
system_type_id (database, app server, apache, etc.)
SYSTEM_TO_SYSTEM
publishing_system_id - number
consuming_system_id - number
We would like to have a master detail form where we would query database 6 for example, and then see all related systems one level below it (application server 2 in the example above). I have been able to query the related systems and show them in a drop down pick list on the detail form, but I cannot edit them.
The wizard asked for the primary key of the detail table, which in this case is not a sequence generated value, but a pick from a systems table lookup on system_id/system_name.
If the master form would automagically lass the system_id to the publishing_system_id on the detail form, and allow me to update that with a picked system_id tied to consuming_system_id, that would be perfect.
I can write the htp calls I mentioned earlier, but I am sure I am missing something.
Does anyone have any best practices for this?
Thanks!
Steve

Hi Steve,
Here is an example which might help you:
http://apex.oracle.com/pls/otn/f?p=43368:35
Here, I have used two tables e.g. test1 and test2. Test1 has an id column which is just a sequence column and the name column in this table has a unique key.
Table test2 has id column as primary key and name1 column is linked with Test1 table on the Form. Name2 column is not required to be linked with Test1 table.
If this is what you are after, then I can give your more detail for it.
Hope it helps.
Zahid

Error in Master Detail Form

Hi All,
i m getting the following error when i m creating a master entry ...
ORA-06550: line 5, column 23: PL/SQL: ORA-02289: sequence does not exist ORA-06550: line 5, column 16: PL/SQL: SQL Statement ignored ORA-06550: line 8, column 16: PLS-00364: loop index variable 'C1' use is invalid ORA-06550: line 8, column 9: PL/SQL: Statement ignored
but while creating the master detail form i had specified the corresponding sequences and they even exist in the DB.
Please ! do help me .
Thanks & Regards,
Nandini Thakur.

Hi ,
Though u choose the schema name ...the sequence is not appended with the schema name .
Example you are craeting the application in schema 1 and ur database objects are in schema 2.
so while creating the Master detail form you will get the option of choosing the schema, but then also the sequence name is not appended (as this may be the problem or bug in apex) .
so one needs to manually go and append the schema name.
In master detail form one needs to append it
1) Form of the Master ...the process called as get primary key there the sequence name should be appended
ex:- myschema.seq
2) another is the detail tabular form . here you need to good to the id hidden field and edit it , then in the source column append it with the myschema.seq.
Regards,
Nandini Thakur

Master-Detail Form - implementing some thing like Post-Query trigger

Hi all,
I am struggling to implement an eqivalent of a post-query trigger in Oracle Forms. Please bear with me as I am trying to explain in detail what the problem is.
Here is my situation.
I have three tables EMP, DEPT and LOCATION. I created a Master/Table pages on EMP and DEPT.
Basic relationships.
Each LOCATION has one or more DEPTs; Each DEPT is at one and only one LOCATION.
Each DEPT has one ore more EMPs; Each EMP is assigned to only and only DEPT.
Not getting too complicated, here are the table layouts:
LOCATION:
ID number(10,0) not null,
NAME varchar2(20) not null
DEPT
ID number(10,0) not null,
NAME varchar2(20) not null,
LOC_ID number (10,0) not null foreign key from LOCATION
EMP
ID number(10,0) not null,
NAME varchar2(20) not null,
DEPT_ID number (10,0) not null foreign key from DEPT
Assume I have all the constraints, BIU triggers, sequences defined properly.
I am using the APEX page wizard to create a Master/Detail Form on DEPT and EMP. The first page is the Master Report on DEPT. I want to display the Location Name on this page also. Because the Master Report allows
you to change the query, I was able to add the Location Name as part of the
query. This was very simple.
Select a.name "Department_Name",
b.name "Location"
from dept a, location b
where a.loc_id = b.id
Moving on, In the Master Detail Form, I would like to get the Location Name as part of the first Region (Dept Region).
In this region, I would like to include the Location Name also. So my first region on the Master Detail form includes:
Dept Id: ________
Dept Name: _______
Location Name: __________
As Region are automatically populated using using a Fetch Row from EMP table (Automated Row Fetch) on an After Header process point, I don't have a way of including the Location as part of query. So I created a Region level Item called Location Name, made it Display only.
In the old SQL*Forms, or Oracle Forms days, I used to use a Post-Query trigger, or Post-Change trigger to fire on the Loc_Id column to populate the Location Name. Simple fetch like:
Select name
into :P80_location_name
from location
where loc_id = :P80_loc_id
However, I am struggling to implement some thing simple like this in APEX. Tried creating a processes, computatations etc, but nothing is working.
I have seen some previous responses to fetching values from a foreign table
using a button or AJAX script, but this should be very basic. What am I
missing here?
Appreciate any insights.
Thanks.
John

Hi John,
I'm not too familiar with the post-query triggers in Oracle Forms, but the use of a List of Values (LOV) on your LOCATION table might do the trick for you. If you create a dynamic LOV based on your LOCATIONS table, it can then be referenced by the LOC_ID item on the Master-Detail page, to display the Location Name. You could try doing the following:
1. Create a new dynamic LOV, LOCATIONS, using a query similar to the following:
select Name d, ID r
from LOCATION
order by 1
2. Edit the "Create" button on the Master report page, and in the "Optional URL Redirect" section set "Request" to CREATE. Click Apply Changes, to save the setting.
3. Edit the LOC_ID item on your Master-Detail page, and set the following:
* in the "Name" region change the "Display As" setting to Select List
* in the "Label" region change the Label to Location Name.
* in the "List of Values" region set the "Named LOV" to LOCATIONS
* in the "Read Only" section, set the condition to Request != Expression 1, and set Expression 1 to CREATE.
Click Apply Changes to save the settings.
When you run the pages now, the Location Name field will appear as Read-Only when editing a selected Master row. The item will appear as a Select List when the user clicks "Create" on the Master page, to create a new Master row.
I hope this helps.
Regards,
Hilary

Master Detail Form - Problem using built in wizard

Hi There
We are working on Application express 2.2.
We are facing problems for a master detail form using Wizard. The
details are as follows : >>
1) Master table : TS_ENTRY_TXN
trans_id P.K.
2) Detail table : TS_ENTRY_TXN_DETAIL
a)trans_id
b)sub_trans_id Composite P.K.(trans_id,sub_trans_id) & these are
based on sequences.
If i try to build a master detail form using the Wizard, the options
for providing P.K. for master & detail are listed which we used.
As it is a master detail form, we want to carry trans_id to the detail
for updations/insertions which doesn't happen.
The MRU fails with oracle error :
Error in mru internal routine: ORA-20001: Error in MRU: row= 1,
ORA-01400: cannot insert NULL into
("TS_APEX"."TS_ENTRY_TXN_DETAIL"."ENTRY_ID"), insert into
"TS_APEX"."TS_ENTRY_TXN_DETAIL" ( "ENTRY_ID", "SUB_ENTRY_ID",
"SMR_ID", "TASK_ID", "SUB_TASK_ID", "TIME_SPENT", "REMARKS") values (
:b1, :b2, :b3, :b4, :b5, :b6, :b7)
Is there any other way to build master detail wihout wizard.
Could you please suggest us better way to complete this task.

If I'm reading this correctly, then one of the columns in your detail tables' primary key is also the foreign key pointing to your master table? If that's the case, then that's not supported by the wizard. For the wizard generated master-detail form to work properly, you'll have to have a foreign key column in your detail table which is not part of your detail table's primary key.
Hope this helps,
Marc

Session storage errors in master-detail form

hi,
as the sequences do not work in master detail forms, i'm using session variables but the form does not compile and gives error.
following is my code in the SAVE button of the master-detail form -
declare
new_prod_id number(10);
begin
select BPSIDEV.PRODUCT_ID_SEQ.NEXTVAL
into new_prod_id
from dual;
p_session.set_value
p_block_name => 'MASTER_BLOCK',
p_attribute_name => 'A_PRODUCT_ID',
p_value => new_prod_id
doSave; -- This is generated code
end;
the action item values is as foloows -
Master - INSERT
Detail - INSERT
am i missing here something ? or is anything wrong here ?? pls advise ...
after the above changes the form would not compile at all.
also how would i populate the the detail records with the foreign key ??
thanx...
null

This problem is fixed in 3.0.8 release of Portal which will be available with the next release of iAS.
Actuallty the fix is simple look at the generated package of EXAMPLE_MD_FORM from EXAMPLE_APP, onSave event handler looks like this:
procedure onSave
p_block_name in varchar2,
p_object_name in varchar2,
p_instance in integer,
p_event_type in varchar2,
p_user_args in varchar2,
p_session in out WWV_30898.wwa_api_module_session
is
"_master_block" varchar2(30) := 'MASTER_BLOCK';
Some more code.......
And then closer to the end in detail processing section there is something like:
"_d_data_rec".COMM:=p_session.get_value_as_NUMBER(
p_block_name => "_detail_block",
p_attribute_name => 'A_COMM',
p_index => "_cnt"
"_d_data_rec".DEPTNO:=p_session.get_value_as_NUMBER(
p_block_name => "_detail_block",
p_attribute_name => 'A_DEPTNO',
p_index => "_cnt"
===========================================
You'll need to insert following code, just one if statement, that's it. Please note every time you regenerate the package this code will be lost, so you'll need to add this agains and again. Not a perfect solution, that's why I like JS workaround better.
============================================
if "_d_data_rec".DEPTNO is NULL and "_m_data_rec".DEPTNO is NOT NULL
then
"_d_data_rec".DEPTNO := "_m_data_rec".DEPTNO;
end if;
============================================
============================================
if "_detail_action" = 'DELETE' and "_DETAIL_ROWID" is not null then
DELETE FROM WWV_30898_DEMO.EMP WHERE ROWID = "_DETAIL_ROWID";
"_detail_deleted" := "_detail_deleted" + 1;
elsif "_detail_action" = 'UPDATE' then
UPDATE WWV_30898_DEMO.EMP SET EMPNO="_d_data_rec".EMPNO,ENAME="_d_data_rec".ENAME,JOB="_d_data_rec".JOB,MGR="_d_data_rec".MGR,HIREDATE="_d_data_rec".HIREDATE,SAL="_d_data_rec".SAL,COMM="_d_data_rec".COMM,DEPTNO ="_d_data_rec".DEPTNO WHERE ROWID = "_DETAIL_ROWID" ;
"_detail_updated" := "_detail_updated" + 1;
elsif "_detail_action" = 'INSERT' then
INSERT INTO WWV_30898_DEMO.EMP (EMPNO,ENAME,JOB,MGR,HIREDATE,SAL,COMM,DEPTNO) VALUES ("_d_data_rec".EMPNO,"_d_data_rec".ENAME,"_d_data_rec".JOB,"_d_data_rec".MGR,"_d_data_rec".HIREDATE,"_d_data_rec".SAL,"_d_data_rec".COMM,"_d_data_rec".DEPTNO) RETURNING ROWID INTO "_DETAIL_ROWID";
"_detail_inserted" := "_detail_inserted" + 1;
end if;
............................

Join 2 tables and display in Master Detail Form

Hello Everyone,
Please help me out on the following.
I have 2 tables with common field ID I want to join the 2 tables and will show the results on Master Detail form .Please suggest me on this thing .
Thanks

Hi,
The ID primary key on the details table should be ok provided you have some means of populating it - usually via a trigger that gets a new sequence number.
When the page is loaded, do you see data in the details tabular form? Or is the problem only for when you are creating entirely new master/detail records?
When adding a new record into the details form, the FK field should be populated with the PK of the master form by default. On this report, go to the Contract_Number column and have a look at the Column Attributes for it. You should see a section for Tabular Form Element and in there are two settings - Default Type and Default. The Default Type should be Item.... and the Default should be the master record's PK page item name (eg, P1_CONTRACT_NUMBER). Underneath these settings should be the settings Referrence.... - check that these correctly point to the field on the details table. If you have different settings, try changing them - otherwise, list them here so that we can check
Andy

Can't add new detail record in Master Detail form

Hi ,
I've created a simple database application from scratch by initially selecting a Master Detail page. This generated a report page (for the parent ) and a form page (for the child ). On using the form to add a new child record the following error was generated:
Error in mru internal routine: ORA-20001: Error in MRU: row= 1, ORA-01400: cannot insert NULL into ("STUDENT1"."DELEGATE"."DELEGATE_ID"), insert into "STUDENT1"."DELEGATE" ( "DELEGATE_ID", "CLIENT_ID", "SURNAME", "INITIALS", "SEX", "SPECIAL_NEEDS") values ( :b1, :b2, :b3, :b4, :b5, :b6)
Error Unable to process update.
The 'child' field listed in the error message is automatically hidden on the form and I had presumed that on generating this form using the wizard that I would have had an opportunity to link the delegate_id field to a trigger or a sequence as seems to happen when creating a database application scratch using other page types. I'm new to Apex so I'd be grateful if anyone could let me know as to why this default behaviour occurs,
regards,
Kevin.

I tried it for Apex 4.0.2 (my version) and 4.1 (on apex.oracle.com) and I am asked for master and detail PK generation in both versions.
What are your steps exactly in the wizard? Like this?
Create page -> Form -> Master Detail Form
Now you see a whole list of sub steps including "Primary Key Source".
Oh I see "Create Application wizard." in your post. Start with an empty application (blank page) and use the Create Page wizard instead. Maybe that's the difference.
Edited by: InoL on Nov 18, 2011 9:27 AM

Primary key updation in the Master details form.

Hi All,
I am struggling with Master Detail form in apex 3.12.
I have two tables.
SaleMaster ( TRN_ID as PK ) Created from Sequence.
SaleDetail ( TRN_ID , TRN_TYPE as PK) TRN_ID FK from SaleMaster , TRN Type is user Input in SaleDetail.
What is best simple way to create the master details form for the above master details tables.
Thanks.

I found a way. I dont like it - but it works.
I made a column link in the detail with the following:
javascript: doSubmit('NAVIGATE@#ROWNUM#);
This way I obtain information in the :REQUEST object about which row was clicked.
In a After submit process on the page I then parse this :REQUEST object like this:
DECLARE
v_row NUMBER;
v_pos NUMBER;
BEGIN
v_pos := instr(:REQUEST,'@',-1);
v_row := substr(:REQUEST, v_pos+1);
IF APEX_Application.g_f02(v_row) IS NOT NULL THEN
:P_PRIMARY_KEY_ID:= APEX_Application.g_f02(v_row);
ELSE
:P_PRIMARY_KEY_ID:= -1;
END IF;
END;
I know that my "Id" column is named f02 in the form, so this way I can find the id. I then assign this id to a kind of global variable - on the page I redirected to I can now find the Id.
Talk about ugly code :P

Master Detail Forms

Can somebody please explain to me how to set up a Master Detail form using Apex 3.1.0?
The help system is not very helpful.
I have a Master table whose PK is based on a sequence.
I have a Detail table whose PK is the concatenation of the Master table's PK with a VARCHAR2.
Here is how the form is supposed to work: I enter data on the master and detail sections, click an Insert button and 1 record should go into the master and 1 or 2 records into the detail.
But now I am on the pages that ask me to choose the source for the PK's.
The source for the master is easy -- it's the sequence.
But how do I enter the source for the detail table primary key columns?
The first part of the PK comes from the same sequence number that the master table is based on, so I do not want the sequence to increment once to populate the master table and again to populate the detail table.
The second part of the PK comes from a value that was entered on the form.
So how do I accomplish this?
Do I choose "Existing sequence" for the first PK source and "Custom function" for the 2nd?
Or what?
Thanks for your help. Please be as specific as possible in your answer.

I tried creating a master detail form using a view of the current date's attendance(from the MASTER table) as the detail table AND and the table of all date's attendance as the MASTER table. If I want just the current date's attendance from the MASTER table..how do I get those records the show in the detail of the form?

Having problem with creating Master Detail form , please help

I have to work on a project to create a survey system using APEX, as am new on using this tool , am still facing some problems to finish my job..
i created Master/Detail form using wizard, the master form is working fine but am when i try to add data using the detail form its giving me error :
Error in mru internal routine: ORA-20001: Error in MRU: row= 1, ORA-20001: ORA-20001: Current version of data in database has changed since user initiated update process. current checksum = "A884FA378C851786DDFE3A33709CB23C", item checksum = "5F8B1EE5CD3D46437455F43B37B9A6A0"., update "ABA"."ABA_SURVEY_SUBCATEGORY_MAST" set "ASCM_CATEGORY_ID" = :b1, "ASM_SURVEY_CODE" = :b2, "ASSM_SUBCATEGORY_ID" = :b3, "ASSM_SUBCATEGORY_DESC" = :b4
i tried to go through the posts from others but i still dunno what is this error !!!& how to solve it..
my master data table have 2 primary keys.. the details data table have 3 primary key all of them using trigger to fire a sequence to get the next_val!!
am desperate & need help urgently for this ASAP.

hello
here is the solution,i hope this might help u.
go to the code of your button and change write the following
go_block('name of your master block');
execute_query(no_validate);
and in the object navigator make the first item in the master
block that it should be displayed in the canvas and it must be a
navigable item too.not a display item.
thank you
Zeeshan Ahmad

Master Detail form - Problems

We are facing problems for a master detail form using Wizard. The details are as follows : >>
1) Master table : TS_ENTRY_TXN
trans_id P.K.
2) Detail table : TS_ENTRY_TXN_DETAIL
a)trans_id
b)sub_trans_id Composite P.K.(trans_id,sub_trans_id) & these are based on sequences.
If i try to build a master detail form using the Wizard, the options for providing P.K. for master & detail are listed which we used.
As it is a master detail form, we want to carry trans_id to the detail for updations/insertions which doesn't happen.
The MRU fails with oracle error :
Error in mru internal routine: ORA-20001: Error in MRU: row= 1, ORA-01400: cannot insert NULL into ("TS_APEX"."TS_ENTRY_TXN_DETAIL"."ENTRY_ID"), insert into "TS_APEX"."TS_ENTRY_TXN_DETAIL" ( "ENTRY_ID", "SUB_ENTRY_ID", "SMR_ID", "TASK_ID", "SUB_TASK_ID", "TIME_SPENT", "REMARKS") values ( :b1, :b2, :b3, :b4, :b5, :b6, :b7)
Is there any other way to build master detail wihout wizard.
Could you please suggest us better way to complete this task.

Hi San Mat,
I would never recommend having a composite PK on any table. Use the sub_trans_id as the PK in its own right and have trans_id as a Foreign Key pointing to the master table.
However, given your existing table structure, what you need to do is add a Default value for the ENTRY_ID field on the child table that points to the Page Item used for the PK field on the master table (you've said trans_id but do you mean ENTRY_ID??). On the column's Column Attributes page, set Default Type to Item (Application or page item name) and the Default to P1_ENTRY_ID (or whatever the name is of field is on the master table's form that holds the PK)
When a new row is added to the child table, the ENTRY_ID from the master table is inserted automatically.
Regards
Andy

Unable to View records in a master-detail form

In a master-detail form, I am not able to view records of the master/detail table
by accepting the values of the PK of the header table items.
Please tell me the exact steps, so that I can view the detail table records based on the header table PK items.
Thanks.

Yes I wrote the LOV code in a different procedure. Now, the view is showing correctly. But I am now trying to update the viewed records.
The steps I am following in View Option is as below:
go_block('header');
clear_block(no_validate);
execute_query;
proc_lov;
go_block('item');
execute_query;
I am unable to commit the changes made in the blocks
The reason it is showing is : UNABLE TO update.....I saw the display_error.
The system is trying to update the PK part also..Why....Though PK party is clearly defined in the table as well as property palette. Pl. explain how to go about it. Uregent help is required once again.

To attach a RTF template(Report for printing ) in the master detail form

I have an application in which I have 3 master detail forms of which one of the form is a gate pass form . Now this gate pass form has a report region as the detail.
All that i need help is to print the Gate Pass with few fields as information in the gate pass form , where an image or picture of the visitor is also a filed .
Now I have created an RTF Template which is the Gate pass layout with the pic.
So ultimately I have the application for the gate pass form and the RTF template ready with me .. Fixing this template with the application with a BUTTON called PRINT is the challenge am facing !
SELECT XVH.GPDATE
       , TO_CHAR(XVH.VISITORTIMEIN, 'HH:MI') VISITORTIMEIN --, (XVH.VISITORTIMEIN )
       , (TO_CHAR(XVH.VISITORTIMEOUT, 'HH:MI'))VISITORTIMEOUT
       , XVH.VISITOR_NAME --, = XVH.PERSON_ID
       , XVH.COMAPANY_NAME
       , XVH.PURPOSE_OF_VISIT
       , (SELECT A.FULL_NAME
            FROM PER_ALL_PEOPLE_F A
           WHERE A.PERSON_ID = XVH.PERSON_ID
             AND SYSDATE BETWEEN A.EFFECTIVE_START_DATE AND A.EFFECTIVE_END_DATE) To_meet
       , XVH.VISITOR_PHONE
       ,APPS.GETBASE64 (XVH.VISITOR_PHOTO)
FROM xxcdot.XXBCT_VGPF_HEADER XVH
WHERE XVH.GP_HEADER_ID = :P_HEADER_ID
This is the query for the template ..
Please help me with this. I am very new to apex and learning it with help of online tut

Pars I need another Help
I am working with a master detail form where in the form region i have a Radio group . Lets say the Radio group is
o Returnable
o Non Returnable
o Other
so when i select Non returnable I want a particular column called
Line Status to get Disabled .
I have done that by a dynamic action - using jquery statement (.Disable) .
Defining the element attributes as Disable .
Now the problem is that ,, Line status is getting disabled on the selection of Non returnable radio button. but unless and until i dont press the Add row button it does not work ,, else i will have to switch over between the radio buttons to get this action done !!

Sequences in Master-Detail Forms

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