Oracle Interview Questions – Oracle Forms – Custom Development – FAQ


What is the ICX: Forms Launcher system profile option for?

This profile option is used by the Self Service Web Applications Personal Home Page (also known as ICX) to determine the base URL needed to launch an application, which in this case is a Forms application.

What should ICX: Forms Launcher be set to?

ICX: Forms Launcher –is set to ?http://machine_name:port/dev60cgi/f60cgi?. In Apps release 11i you can add some parameters to this URL to enable some Forms features like tracing.

What is FORMS60_TIMEOUT?
FORMS60_TIMEOUT is an environment setting that determines the maximum idle time (in minutes) before f60webmx shuts down.  Note that it will only terminate an idle middle tier process, i.e. one which is waiting for the "next message" from the client. If the middle tier process is running a transaction or waiting for a query to complete it will not have take effect.

How do you enable Forms Runtime Diagnostics (FRD) in Apps?
To enable Forms Runtime Diagnostics (FRD):

– login to Apps as sysadmin
– click on Profile/System
– query ICX%FORMS%LAUNCHER
– add the following to the end of its value at user level:
?record=collect&log=/tmp/forms_frd.log

Note that like any Apps profiles you can do this on various levels e.g. site, user, etc. so that you target your FRD accordingly. Also be aware that FRD incurs significant overhead to Apps processing so disable it when not in use

How do you generate Apps Forms modules or FMB files?
Oftentimes as part of upgrading Forms or modifying a Form module or applying a patch modifying a Form module, you would encounter an issue that would necessitate manually regenerating the Forms module executable or FMX file. To do this you issue the following command:

f60gen module=form_name.fmb userid=apps/apps output_file=form_name.fmx module_type=form batch=yes compile_all=special

How do you generate Apps Forms library modules or PLL files?
To do this you issue the following command:

f60gen module=library_name.pll userid=apps/apps module_type=library batch=yes compile_all=special

How do you generate Apps Forms menu modules or MMB files?
Note that there is only one menu for Apps so it is rare that you need to regenerate the menu. To do this you issue the following command:

f60gen module=FNDMENU.mmb userid=apps/apps output_file=FNDMENU.mmx module_type=menu batch=yes compile_all=special

What is the sequence in which Forms resolves program unit calls?
Forms will attempt to resolve a program unit call in the following sequence:

Program Units node
Forms Library
Database

Where can you find the source Forms modules for Apps?
Apps places all its source (FMB) files in the $AU_TOP/forms/<language> directory whereas the FMX files reside in their respective $PRODUCT_TOP/forms/<language> directory. On the other hand, all menu (MMB, MMX) and library (PLL and PLX) files are copied to the $AU_TOP/resource directory.

How can you find the version of Forms in Apps?
Once you are in an Apps form …

click on Help
click on About Oracle Applications

information is under the Current Form section. The Form Name corresponds to the FMB and FMX file for that form.  The Form Version corresponds to the release level of that form.

How can I open an Apps form in Forms Builder

If you want to open a product specific form, make sure you have all its associated forms and libraries copied over.  Since it is quite difficult to pinpoint exactly what this is, its best to just copy over the entire contents of $AU_TOP/forms/<language> and $AU_TOP/resource.

How can you confirm the version of the FMX or FMB file?
Oftentimes, once you determine the version and name of the current form you want to peek into the internal workings of the actual form itself. To ensure that you are peeking at the right release of the FMB file you can do the following:

$adident Header FNDSCSGN.fmb

If you simply copy the form over to a a machine that does not have Apps installed, you will run into is a lot of FRM-18108: "Failed to load the following objects" errors.  This is because an Apps form is usually dependent on a host of other forms, libaries and menus.

If you want to open the TEMPLATE.fmb form, make sure you have the following forms, libraries, copied over as well from the $AU_TOP/forms/<language> and $AU_TOP/resource directories:

APPSTAND.fmb
APPCORE.pll
APPCORE2.pll
APPDAYPK.pll
CUSTOM.pll
FNDSQF.pll
GHR.pll
GLOBE.pll
GSM.pll
JA.pll
JE.pll
JL.pll
VERT.pll
OPM.pll
PQH_GEN.pll
PSA.pll
PSAC.pll
PSB.pll
IGILUTIL.pll
IGILUTIL2.pll

What is a Forms Builder node?

    A Forms Builder node refers to the leaves and branches of its Object Navigator. The Object Navigator provides a hierarchical display of the objects in a Form modules.

    +Forms
       +Module
       +Trigger
       +Alerts
       +Attached Libraries
       +Data Blocks
       +Canvases
       +Editors
       +LOVs
       +Object Groups
       +Parameters
       +Pop Up Menus
       +Program Units
       +Property Classes
       +Record Groups
       +Reports
       +Visual Attributes
       +Windows
    +Menu
    +PL/SQL Libraries
    +Object Libraries
    +Built-In Packages
    +Database Objects

    Objects are grouped under their respective nodes. For example, all of the windows defined in a form module appear under the Windows node; all the LOVs defined in the form module appearunder the LOVs node and all the program units appear under the Program Units node.  It is important to familiarize yourself with this in case you need to navigate within an Apps form during the course of debugging a problem.

     

     

Oracle Forms Development (Developer 2000): Part 2


Question: What are ALERT?


Answer: An ALERT is a modal window that displays a message notifiying operator of some application condition.
Question: Can a button have icon and label at the same time?


Answer: NO
Question: What is mouse navigate property of button?


Answer: When Mouse Navigate is True (the default), Oracle Forms performs standard navigation to move the focus to the item when the operator activates the item with the mouse.
When Mouse Navigate is set to False, Oracle Forms does not perform navigation (and the resulting validation) to move to the item when an operator activates the item with the mouse.
Question: What is FORMS_MDI_WINDOW?


Answer: forms run inside the MDI application window. This property is useful for calling a form from another one.
Question: What are timers? When when-timer-expired does not fire?


Answer: The When-Timer-Expired trigger can not fire during trigger, navigation, or transaction processing.
Question: Can object group have a block?


Answer: Yes , object group can have block as well as program units.
Question:  How many types of canvases are there?
Answer: There are 2 types of canvases called as Content and Stack Canvas. Content canvas is the default and the one that is used mostly for giving the base effect. Its like a plate on which we add items and stacked canvas is used for giving 3 dimensional effect.

Question: What is a visual attribute?
Answer: Visual attributes are the font, color, and pattern properties that you set for form and menu objects that appear in your application’s interface.

Question: Diff. between VAT and Property Class?
Answer: Named visual attributes define only font, color, and pattern attributes; property classes can contain these and  any other properties. You can change the appearance of objects at runtime by changing the named visual attribute
programmatically; property class assignment cannot be changed programmatically. When an object is inheriting from both a property class and a named visual attribute, the named visual attribute settings take precedence, and any visual attribute properties in the class are ignored.

Question: Which trigger related to mouse?


Answer: When-Mouse-Click
When-Mouse-DoubleClick
When-Mouse-Down
When-Mouse-Enter
When-Mouse-Leave
When-Mouse-Move
When-Mouse-Up
Question: What is Current record attribute property?

Answer: Specifies the named visual attribute used when an item is part of the current record.
Current Record Attribute is frequently used at the block level to display the current row in a multi-record If you define an item-level Current Record Attribute, you can display a pre-determined item in a special color when it is part of the current record, but you cannot dynamically highlight the current item, as the input focus  changes.
Question: Can u change VAT at run time?


Answer: Yes. You can programmatically change an object’s named visual attribute setting to change the font, color, and pattern of the object at runtime.
Question: Can u set default font in forms?


Answer: Yes. Change windows registry (regedit). Set form45_font to the desired font.
Question: Can u have OLE objects in forms?


Answer: Yes.
Question: Can u have VBX and OCX controls in forms?


Answers: Yes.
Question: What r the types of windows (Window style)?


Answer:  Specifies whether the window is a Document window or a Dialog window.
10) What is OLE Activation style property?
10) Specifies the event that will activate the OLE containing item.
Question: Can u change the mouse pointer? How?


Answer: Yes. Specifies the mouse cursor style.  Use this property to dynamically change the shape of the cursor.

Question: What are savepoint mode and cursor mode properties? Level?


Answer: Specifies whether Oracle Forms should issue savepoints during a session. This property is included primarily  for applications that will run against non-ORACLE data sources.   For applications that will run against ORACLE, use the default setting.
Cursor mode – define cursur state across transaction Open/close.
Question: What are OPEN_FORM, CALL_FORM,NEW_FORM? Diff?


Answer: CALL_FORM : It calls the other form. but parent remains active, when called form completes the operation ,  it releases lock and control goes back to the calling form.
When you call a form, Oracle Forms issues a savepoint for the called form.  If the CLEAR_FORM function causes a rollback when the called form is current, Oracle Forms rolls back uncommitted changes to this savepoint.
OPEN_FORM: When you call a form, Oracle Forms issues a savepoint for the called form.  If the CLEAR_FORM function causes a rollback when the called form is current, Oracle Forms rolls back uncommitted changes to this savepoint.
NEW_FORM: Exits the current form and enters the indicated form.  The calling form is terminated as the parent form.  If the calling form had been called by a higher form, Oracle Forms keeps the higher call active and treats it as a call to the new form.  Oracle Forms releases memory (such as database cursors) that the terminated form was using.
Oracle Forms runs the new form with the same Runform options as the parent form.  If the parent form was a called form.
Question: What is call form stack?


Answer: When successive forms are loaded via the CALL_FORM procedure, the resulting module hierarchy is known as the call form stack.
Question: Can u port applictions across the platforms? how?
Answer: Yes, we can port applications across platforms.Consider the form developed in windows system.The form would be generated in unix system by using f60gen my_form.fmb scott/tiger

Form Personalization in Oracle Applications


These days Form personalization is keyword and almost all developer and analyst working in oracle application must be aware and conversant with feature and how-to use this. I recommend to have good amount of practice on this. here i am presenting very brief overview and like to know if it useful need kind of tutorial kind of article. 

Form Personalization in Oracle Applications

The Form Personalization feature allows you to declaratively alter the behavior of Forms-based screens, including changing properties, executing builtins, displaying messages, and adding menu entries.

For each function (a form running in a particular context based on parameters passed to it), you can specify one or more Rules. Each Rule consists of an Event, an optional Condition, the Scope for which it applies, and one or more Actions to perform. An Event is a trigger point within a form, such as startup (WHEN-NEW-FORM-INSTANCE), or when focus moves to a new record (WHEN-NEW-RECORD-INSTANCE). There are standard events that almost every form sends, and certain forms send additional product-specific events.The Scope is evaluated based on the current runtime context to determine if a Rule should be processed or not. The Scope can be at the Site, Responsibility, User, or Industry level. Each Rule can have one or more Scopes associated with it.

 

The Condition is an optional SQL code fragment that is evaluated when the Event occurs; if it evaluates to TRUE then the Actions are processed.

Each Action consists of one of the following:

·   setting a Property, such as making a field Required or hiding a Tab page

·   executing a Builtin, such as GO_BLOCK, DO_KEY or FND_FUNCTION.EXECUTE

·   displaying a Message

·   enabling a Special menu entry

Once Rules are defined, when the target function is run then the Rules are automatically applied as events occur within that form. Although the Form Personalization feature is declarative, the intended audience is a person familiar with Oracle Forms including the PL/SQL programming language, and the Oracle Applications Development Guide. Additionally, any change made could interfere with the base code of a form (the code that Oracle ships), thus the Support statements discussed later in this chapter must be followed diligently.

Using the Personalization Form

 

To create personalizations for a particular function, first invoke that function from the Navigation menu. While in the form, choose Help->Diagnostics->Custom Code-> Personalize from the pulldown menu. This menu entry is secured by the FND_HIDE_DIAGNOSTICS (Hide Diagnostics menu entry) and DIAGNOSTICS (Utilities:Diagnostics) profiles, as are most other entries on the Diagnostics menu.

 

The Personalization form will open and automatically query existing Rules for that function. After making changes, Save them then close and re-run the function to have them take effect. You can also Validate or Apply certain changes immediately to test them without having to re-run the target form by pressing the ‘Validate’ or ‘Apply Now’ buttons.

 

 Why personalization?

Ø      Oracle Supports personalization unlike customization

Ø      Personalization are stored in tables rather than files

Ø      Will not have a bigger impact when you upgrade or apply patches to the environment

Ø      Can be moved easily through FNDLOAD from one instance to other

Ø      Can be restricted at site/responsibility/user level

Ø      Easy to disable/enable with click of a button.

Ø      Personalization will store who columns with which we have the ability to track who created/modified it where as in CUSTOM.PLL we don’t have that ability.

Ø      Can be applied to new responsibilities/users easily.

Ø      Can be restricted to function or form.

 

What can be done through personalization?

Ø      Zoom from one form to another

Ø      Pass data from one form to another through global variables

Ø      Change LOV values dynamically

Ø      Enable/Disable/Hide fields dynamically

Ø      Display user friendly messages when required

Ø      Launch URL directly from oracle form

Ø      Execute PL/SQL programs through FORM_DDL package

Ø      Call custom libraries dynamically

 

Personalization Tables:

FND_FORM_CUSTOM_RULES

FND_FORM_CUSTOM_ACTIONS

FND_FORM_CUSTOM_SCOPES

FND_FORM_CUSTOM_PARAMS

FND_FORM_CUSTOM_PROP_LIST

FND_FORM_CUSTOM_PROP_VALUES  

 

 Thanks – Shivmohan Purohit