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ORACLE Interview Questions and Answers
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(Continued from previous part...)
665. Can you replace default form processing ? How ?
666. What is transactional trigger property?
Identifies a block as transactional control block. i.e. non - database block that oracle forms should manage as transactional block.(NON-ORACLE datasource) default - FALSE.
667. What is OLE automation ?
OLE automation allows an OLE server application to expose a set of commands and functions that can be
invoked from an OLE container application. OLE automation provides a way for an OLE container application to use the features of an OLE server application to manipulate an OLE object from the OLE container environment. (FORMS_OLE)
668. What does invoke built-in do?
This procedure invokes a method.
Syntax:
PROCEDURE OLE2.INVOKE
(object obj_type,
method VARCHAR2,
list list_type := 0);
Parameters:
object Is an OLE2 Automation Object.
method Is a method (procedure) of the OLE2 object.
list Is the name of an argument list assigned to the OLE2.CREATE_ARGLIST function.
669. What are OPEN_FORM,CALL_FORM,NEW_FORM? diff?
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, Oracle Forms runs the new form with the same options as the parent form.
670. What is call form stack?
When successive forms are loaded via the CALL_FORM procedure, the resulting module hierarchy is known as the call form stack.
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