PL/SQL and EGO_ITEM_PUB question

I will try to make this simple. I am using an API and it has a datatype called EGO_ITEM_PUB.ITEM_TBL_TYPE
It is essentially an object which has all of the fields for it's base table (which is MTL_SYSTEM_ITEMS_B).
When using the API, I do something like this...
l_item_table EGO_ITEM_PUB.ITEM_TBL_TYPE;
BEGIN
l_item_table(1).DESCRIPTION := 'TEST';
The above snippet works fine, however my question is this...
Can I somehow dynamically determine the property?
For example...I know the following won't work but I am essentially trying to do something like this (sorry I am not asking my question more clear...it is difficult to phrase it):
l_item_table EGO_ITEM_PUB.ITEM_TBL_TYPE;
v_field_name VARCAHR2(100);
BEGIN
v_field_name := 'DESCRIPTION';
l_item_table(1).v_field_name := 'TEST';

There is no way to do this.
Not sure why you need it though. Why does it matter what the type of the item is? As long as you can access its value using one consistent notation and use it consistently, that should be sufficient, right?

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    A cursor declared in a procedure is local to the procedure that can not be accessed by other procedures.
    13 What is difference between % ROWTYPE and TYPE RECORD ?
    % ROWTYPE is to be used whenever query returns a entire row of a table or view.
    TYPE rec RECORD is to be used whenever query returns columns of different
    table or views and variables.
    E.g. TYPE r_emp is RECORD (eno emp.empno% type,ename emp ename %type
    e_rec emp% ROWTYPE
    cursor c1 is select empno,deptno from emp;
    e_rec c1 %ROWTYPE.
    14 What is an Exception ? What are types of Exception ?
    Exception is the error handling part of PL/SQL block. The types are Predefined and user defined. Some of Predefined exceptions are.
    CURSOR_ALREADY_OPEN
    DUP_VAL_ON_INDEX
    NO_DATA_FOUND
    TOO_MANY_ROWS
    INVALID_CURSOR
    INVALID_NUMBER
    LOGON_DENIED
    NOT_LOGGED_ON
    PROGRAM-ERROR
    STORAGE_ERROR
    TIMEOUT_ON_RESOURCE
    VALUE_ERROR
    ZERO_DIVIDE
    OTHERS.
    15 What is a stored procedure ?
    A stored procedure is a sequence of statements that perform specific function.
    16 What is a database trigger ? Name some usages of database trigger ?
    Database trigger is stored PL/SQL program unit associated with a specific database table. Usages are Audit data modifications, Log events transparently, Enforce complex business rules Derive column values automatically, Implement complex security authorizations. Maintain replicate tables.
    17 What is a cursor for loop ?
    Cursor for loop implicitly declares %ROWTYPE as loop index,opens a cursor, fetches rows of values from active set into fields in the record and closes
    when all the records have been processed.
    eg. FOR emp_rec IN C1 LOOP
    salary_total := salary_total +emp_rec sal;
    END LOOP;
    18 What is a cursor ? Why Cursor is required ?
    Cursor is a named private SQL area from where information can be accessed. Cursors are required to process rows individually for queries returning multiple rows.
    19 What happens if a procedure that updates a column of table X is called in a database trigger of the same table ?
    Mutation of table occurs.
    20 What are two virtual tables available during database trigger execution ?
    The table columns are referred as OLD.column_name and NEW.column_name.
    For triggers related to INSERT only NEW.column_name values only available.
    For triggers related to UPDATE only OLD.column_name NEW.column_name values only available.
    For triggers related to DELETE only OLD.column_name values only available.
    21 What are two parts of package ?
    The two parts of package are PACKAGE SPECIFICATION & PACKAGE BODY.
    Package Specification contains declarations that are global to the packages and local to the schema.
    Package Body contains actual procedures and local declaration of the procedures and cursor declarations.
    22 What are the two parts of a procedure ?
    Procedure Specification and Procedure Body.
    23 What are the return values of functions SQLCODE and SQLERRM ?
    SQLCODE returns the latest code of the error that has occurred.
    SQLERRM returns the relevant error message of the SQLCODE.
    24 What are the PL/SQL Statements used in cursor processing ?
    DECLARE CURSOR cursor name, OPEN cursor name, FETCH cursor name INTO or Record types, CLOSE cursor name.
    25 What are the modes of parameters that can be passed to a procedure ?
    IN,OUT,IN-OUT parameters.
    26 What are the datatypes a available in PL/SQL ?
    Some scalar data types such as NUMBER, VARCHAR2, DATE, CHAR, LONG, BOOLEAN.
    Some composite data types such as RECORD & TABLE.
    27 What are the cursor attributes used in PL/SQL ?
    %ISOPEN - to check whether cursor is open or not
    % ROWCOUNT - number of rows fetched/updated/deleted.
    % FOUND - to check whether cursor has fetched any row. True if rows are fetched.
    % NOT FOUND - to check whether cursor has fetched any row. True if no rows are featched.
    These attributes are proceeded with SQL for Implicit Cursors and with Cursor name for Explicit Cursors.
    28 What are the components of a PL/SQL Block ?
    Declarative part, Executable part and Exception part.
    Datatypes PL/SQL
    29 What are the components of a PL/SQL block ?
    A set of related declarations and procedural statements is called block.
    30 What are advantages fo Stored Procedures /
    Extensibility,Modularity, Reusability, Maintainability and one time compilation.
    31 Name the tables where characteristics of Package, procedure and functions are stored ?
    User_objects, User_Source and User_error.
    32 Is it possible to use Transaction control Statements such a ROLLBACK or COMMIT in Database Trigger ? Why ?
    It is not possible. As triggers are defined for each table, if you use COMMIT of ROLLBACK in a trigger, it affects logical transaction processing.
    33 How packaged procedures and functions are called from the following?
    a. Stored procedure or anonymous block
    b. an application program such a PRC C, PRO COBOL
    c. SQL *PLUS
    a. PACKAGE NAME.PROCEDURE NAME (parameters);
    variable := PACKAGE NAME.FUNCTION NAME (arguments);
    EXEC SQL EXECUTE
    b.
    BEGIN
    PACKAGE NAME.PROCEDURE NAME (parameters)
    variable := PACKAGE NAME.FUNCTION NAME (arguments);
    END;
    END EXEC;
    c. EXECUTE PACKAGE NAME.PROCEDURE if the procedures does not have any
    out/in-out parameters. A function can not be called.
    34 How many types of database triggers can be specified on a table ? What are they ?
    Insert Update Delete
    Before Row o.k. o.k. o.k.
    After Row o.k. o.k. o.k.
    Before Statement o.k. o.k. o.k.
    After Statement o.k. o.k. o.k.
    If FOR EACH ROW clause is specified, then the trigger for each Row affected by the statement.
    If WHEN clause is specified, the trigger fires according to the returned Boolean value.
    35 Give the structure of the procedure ?
    PROCEDURE name (parameter list.....)
    is
    local variable declarations
    BEGIN
    Executable statements.
    Exception.
    exception handlers
    end;
    36 Give the structure of the function ?
    FUNCTION name (argument list .....) Return datatype is
    local variable declarations
    Begin
    executable statements
    Exception
    execution handlers
    End;
    37 Explain the usage of WHERE CURRENT OF clause in cursors ?
    WHERE CURRENT OF clause in an UPDATE,DELETE statement refers to the latest row fetched from a cursor.
    Database Triggers
    38 Explain the two type of Cursors ?
    There are two types of cursors, Implicit Cursor and Explicit Cursor.
    PL/SQL uses Implicit Cursors for queries.
    User defined cursors are called Explicit Cursors. They can be declared and used.
    39 Explain how procedures and functions are called in a PL/SQL block ?
    Function is called as part of an expression.
    sal := calculate_sal ('a822');
    procedure is called as a PL/SQL statement
    calculate_bonus ('A822');
    Programmatic Constructs
    Last Update: September 06, 2004
    1 What are the different types of PL/SQL program units that can be defined and stored in ORACLE database ?
    Procedures and Functions,Packages and Database Triggers.
    2 What are the differences between Database Trigger and Integrity constraints ?
    A declarative integrity constraint is a statement about the database that is always true. A constraint applies to existing data in the table and any statement that manipulates the table.
    A trigger does not apply to data loaded before the definition of the trigger, therefore, it does not guarantee all data in a table conforms to the rules established by an associated trigger.
    A trigger can be used to enforce transitional constraints where as a declarative integrity constraint cannot be used.
    3 What is difference between Procedures and Functions ?
    A Function returns a value to the caller where as a Procedure does not.
    4 What is Database Trigger ?
    A Database Trigger is procedure (set of SQL and PL/SQL statements) that is automatically executed as a result of an insert in,update to, or delete from a table.
    5 What is a Procedure ?
    A Procedure consist of a set of SQL and PL/SQL statements that are grouped together as a unit to solve a specific problem or perform a set of related tasks.
    6 What is a Package ?
    A Package is a collection of related procedures, functions, variables and other package constructs together as a unit in the database.
    7 What are the uses of Database Trigger ?
    Database triggers can be used to automatic data generation, audit data modifications, enforce complex Integrity constraints, and customize complex security authorizations.
    8 What are the advantages of having a Package ?
    Increased functionality (for example,global package variables can be declared and used by any proecdure in the package) and performance (for example all objects of the package are parsed compiled, and loaded into memory once)
    1 With which function of summary item is the compute at options required?
    percentage of total functions.
    2 Why is it preferable to create a fewer no. of queries in the data model?
    Because for each query, report has to open a separate cursor and has to rebind, execute and fetch data.
    3 Why is a Where clause faster than a group filter or a format trigger?
    Because, in a where clause the condition is applied during data retrieval than after retrieving the data.
    4 Which parameter can be used to set read level consistency across multiple queries?
    Read only.
    5 Which of the two views should objects according to possession?
    view by structure.
    6 Which of the above methods is the faster method?
    performing the calculation in the query is faster.
    7 Where is the external query executed at the client or the server?
    At the server.
    8 Where is a procedure return in an external pl/sql library executed at the client or at the server?
    At the client.
    9 When do you use data parameter type?
    When the value of a data parameter being passed to a called product is always the name of the record group defined in the current form. Data parameters are used to pass data to produts invoked with the run_product built-in subprogram.
    10 When a form is invoked with call_form, Does oracle forms issues a save point?
    Yes
    11 What are the important difference between property clause and visual attributes?
    Named visual attributes differ only font, color & pattern attributes, property clauses can contain this and any other properties. You can change the appearance of objects at run time by changing the named visual attributes programmatically , property clause assignments cannot be changed programmatically. When an object is inheriting from both a property clause and named visual attribute, the named visual attribute settings take precedence, and any visual attribute properties in the class are ignored.
    12 What use of command line parameter cmd file?
    It is a command line argument that allows you to specify a file that contain a set of arguments for r20run.
    13 What is WHEN-Database-record trigger?
    Fires when oracle forms first marks a record as an insert or an update. The trigger fires as soon as oracle forms determines through validation that the record should be processed by the next post or commit as an insert or update. c generally occurs only when the operators modifies the first item in the record, and after the operator attempts to navigate out of the item.
    14 What is use of term?
    The term file which key is correspond to which oracle report functions.
    15 What is trigger associated with the timer?
    When-timer-expired.
    16 What is the use of transactional triggers?
    Using transactional triggers we can control or modify the default functionality of the oracle forms.
    17 What is the use of place holder column?
    A placeholder column is used to hold calculated values at a specified place rather than allowing is to appear in the actual row where it has to appear.
    18 What is the use of image_zoom built-in?
    To manipulate images in image items.
    19 What is the use of hidden column?
    A hidden column is used to when a column has to embed into boilerplate text.
    20 What is the use of break group?
    A break group is used to display one record for one group ones. While multiple related records in other group can be displayed.
    21 What is the remove on exit property?
    For a modelless window, it determines whether oracle forms hides the window automatically when the operators navigates to an item in the another window.
    22 What is the purpose of the product order option in the column property sheet?
    To specify the order of individual group evaluation in a cross products.
    23 What is the maximum no of chars the parameter can store?
    The maximum no of chars the parameter can store is only valid for char parameters, which can be upto 64K. No parameters default to 23Bytes and Date parameter default to 7Bytes.
    24 What is the main diff. bet. Reports 2.0 & Reports 2.5?
    Report 2.5 is object oriented.
    25 What is the frame & repeating frame?
    A frame is a holder for a group of fields. A repeating frame is used to display a set of records when the no. of records that are to displayed is not known before.
    26 What is the difference between OLE Server & Ole Container?
    An Ole server application creates ole Objects that are embedded or linked in ole Containers ex. Ole servers are ms_word & ms_excel. OLE containers provide a place to store, display and manipulate objects that are created by ole server applications. Ex. oracle forms is an example of an ole Container.
    27 What is the difference between object embedding & linking in Oracle forms?
    In Oracle forms, Embedded objects become part of the form module, and linked objects are references from a form module to a linked source file.
    28 What is the difference between boiler plat images and image items?
    Boiler plate Images are static images (Either vector or bit map) that you import from the file system or database to use a graphical elements in your form, such as company logos and maps. Image items are special types of interface controls that store and display either vector or bitmap images. Like other items that store values, image items can be either base table items(items that relate directly to database columns) or control items. The definition of an image item is stored as part of the form module FMB and FMX files, but no image file is actually associated with an image item until the item is populate at run time.
    29 What is the difference between $$DATE$$ & $$DBDATE$$ $$DBDATE$$ retrieves the current database date $$date$$ retrieves the current operating system date.
    30 What is the diff. when Flex mode is mode on and when it is off?
    When flex mode is on, reports automatically resizes the parent when the child is resized.
    31 What is the diff. when confine mode is on and when it is off?
    When confine mode is on, an object cannot be moved outside its parent in the layout.
    32 What is the diff. bet. setting up of parameters in reports 2.0 reports 2.5?
    LOVs can be attached to parameters in the reports 2.5 parameter form.
    33 What is the advantage of the library?
    Libraries provide a convenient means of storing client-side program units and sharing them among multiple applications. Once you create a library, you can attach it to any other form, menu, or library modules. When you can call library program units from triggers menu items commands and user named routine, you write in the modules to which you have attach the library. When a library attaches another library, program units in the first library can reference program units in the attached library. Library support dynamic loading-that is library program units are loaded into an application only when needed. This can significantly reduce the run-time memory requirements of applications.
    34 What is term?
    The term is terminal definition file that describes the terminal form which you are using r20run.
    35 What is system.coordination_operation?
    It represents the coordination causing event that occur on the master block in master-detail relation.
    36 What is synchronize?
    It is a terminal screen with the internal state of the form. It updates the screen display to reflect the information that oracle forms has in its internal representation of the screen.
    37 What is strip sources generate options?
    Removes the source code from the library file and generates a library files that contains only pcode. The resulting file can be used for final deployment, but can not be subsequently edited in the designer. ex. f45gen module=old_lib.pll userid=scott/tiger strip_source YES output_file
    38 What is relation between the window and canvas views?
    Canvas views are the back ground objects on which you place the interface items (Text items), check boxes, radio groups etc.,) and boilerplate objects (boxes, lines, images etc.,) that operators interact with us they run your form . Each canvas views displayed in a window.
    39 What is pop list?
    The pop list style list item appears initially as a single field (similar to a text item field). When the operator selects the list icon, a list of available choices appears.
    40 What is new_form built-in?
    When one form invokes another form by executing new_form oracle form exits the first form and releases its memory before loading the new form calling new form completely replace the first with the second. If there are changes pending in the first form, the operator will be prompted to save them before the new form is loaded.
    41 What is lexical reference? How can it be created?
    Lexical reference is place_holder for text that can be embedded in a sql statements. A lexical reference can be created using & before the column or parameter name.
    42 What is forms_DDL?
    Issues dynamic Sql statements at run time, including server side pl/SQl and DDL
    43 What is difference between open_form and call_form?
    when one form invokes another form by executing open_form the first form remains displayed, and operators can navigate between the forms as desired. when one form invokes another form by executing call_form, the called form is modal with respect to the calling form. That is, any windows that belong to the calling form are disabled, and operators cannot navigate to them until they first exit the called form.
    44 What is bind reference and how can it be created?
    Bind reference are used to replace the single value in sql, pl/sql statements a bind reference can be created using a (:) before a column or a parameter name.
    45 What is an user exit used for?
    A way in which to pass control (and possibly arguments ) form Oracle report to another Oracle products of 3 GL and then return control ( and ) back to Oracle reports.
    46 What is an OLE?
    Object Linking & Embedding provides you with the capability to integrate objects from many Ms-Windows applications into a single compound document creating integrated applications enables you to use the features form .
    47 What is an object group?
    An object group is a container for a group of objects; you define an object group when you want to package related objects, so that you copy or reference them in other modules.
    48 What is an anchoring object & what is its use?
    An anchoring object is a print condition object which used to explicitly or implicitly anchor other objects to itself.
    49 What is a User_exit?
    Calls the user exit named in the user_exit_string. Invokes a 3Gl program by name which has been properly linked into your current oracle forms executable.
    50 What is a timer?
    Timer is an "internal time clock" that you can programmatically create to perform an action each time the timer expires.
    51 What is a Text_io Package?
    It allows you to read and write information to a file in the file system.
    52 What is a text list?
    The text list style list item appears as a rectangular box which displays the fixed number of values. When the text list contains values that can not be displayed, a vertical scroll bar appears, allowing the operator to view and select undisplayed values.
    53 What is a property clause?
    A property clause is a named object that contains a list of properties and their settings. Once you create a property clause you can base other object on it. An object based on a property can inherit the setting of any property in the clause that makes sense for that object.
    54 What is a physical page ? & What is a logical page ?
    A physical page is a size of a page. That is output by the printer. The logical page is the size of one page of the actual report as seen in the Previewer.
    55 What is a library?
    A library is a collection of subprograms including user named procedures, functions and packages.
    56 What is a difference between pre-select and pre-query?
    Fires during the execute query and count query processing after oracle forms constructs the select statement to be issued, but before the statement is actually issued. The pre-query trigger fires just before oracle forms issues the select statement to the database after the operator as define the example records by entering the query criteria in enter query mode. Pre-query trigger fires before pre-select trigger.
    57 What is a combo box?
    A combo box style list item combines the features found in list and text item. Unlike the pop list or the text list style list items, the combo box style list item will both display fixed values and accept one operator entered value.
    58 What does the term panel refer to with regard to pages?
    A panel is the no. of physical pages needed to print one logical page.
    59 What are visual attributes?
    Visual attributes are the font, color, pattern proprieties that you set for form and menu objects that appear in your application interface.
    60 What are three panes that appear in the run time pl/sql interpreter?
    1.Source pane. 2. interpreter pane. 3. Navigator pane.
    Regards
    B RANGARAJAN

  • NEED FOR INTERVIEW QUESTION SQL AND PL/SQL

    I am finished Oracle 9i OCA.Pls Anyone help me.Interview Questions for SQL and PL/SQL.

    Hi,
    first of all, It is not the right place for this question. Better Google it and you will find hell lot of information over there.
    Still, Give your email id, i will send you all the SQL/PLSQL interview question, I am having..
    Thanks
    KaMaL

  • Need objective sql and pl/sql question for preparing interview

    Hey buddy please help me, now I am preparing interview of sql and pl/sql where asking objective question, so I need online site for preparing interview, your suggestion would be greatly appreciated.

    Have you tried searching using one of the many Internet search engines?
    I expect that there are many kinds of sites out there that may cater to you.
    The only other recommendation I would have would be to review the documentation at http://tahiti.oracle.com. Probably the SQL Language Reference, PL/SQL Reference, Application Developer's Guide, and Concept's Guide.

  • PL/SQL and Java implementation

    Hi all,
    We need to implement a fast solution for reporting to our existing web application. Application is totally based on stored procedures written in PL/SQL.
    We have already java classes for drawing different types of charts
    named Chartdirector (http://www.advsofteng.com/)
    This library can create chart images in memory.
    I have already read about calling java classes from PL/SQL and SQLJ too.
    My questions are;
    1. Is this safe to include classes to database and create
    reports by using loadjava in real life. I mean not in theory, in real life?
    2. Is there any experiments of the audience about this method?
    3. Would it be any performance problems about this?
    4. Should i prefer to use any Java container and jsps instead of this method?
    I will continue to research for necessary steps after i could see the light :)
    Thank you to all,
    Regards,
    Gokhan

    > 1. Is this safe to include classes to database and create
    reports by using loadjava in real life. I mean not in theory, in real life?
    Yes.
    > 2. Is there any experiments of the audience about this method?
    Experiments and actual implementation - yes. It works. Granted, it does not always work as easy as running the Java code from the command line. But it does work.
    > 3. Would it be any performance problems about this?
    This is a potential problem with any software code.
    4. Should i prefer to use any Java container and jsps instead of this method?
    To be honest, I prefer not using Java for web graphics as I'm not impressed with the quality and flexibility of the graphs generated. I prefer using (and paying for commercial use) for the JPGraph classes for PHP - and using that from PL/SQL (via Zend Core for Oracle).
    Another option is to use SVG and generated SVG directly from PL/SQL. But this requires a browser plugin and SVG also does not look that great. (this is btw what Oracle's HTMLDB does and uses)

  • PL/SQL and Forms executable in Oracle 8i Lite ?

    I've got 2 basic and important questions:
    1.) Is it possible to store procedures with PL/SQL in a Oracle 8i Lite Database(Operating System Windows 2000)
    2.) Are the normal Forms 6i - Applications executable on a Oracle 8i Lite Database.
    (Operating System Windows 2000)
    Regards
    Steffen

    Regardless of which path you want to take, in order to get the OCP certification in either the DBA or PL/SQL developer track, you must first obtain the respective OCA certification for that track. I'm assuming that since you are still undecided in which path to take that you haven't started working on either yet. If you look at the pages for the OCA DBA and OCA PL/SQL Developer certs and what is required for each, you'll see that the first block of tests for either certification (the SQL based exams) has the same options (1Z0-007, 1Z0-047, 1Z0-051) and passing one of those SQL based exams gives credit towards obtaining both OCA certifications. That might be a good place to start.
    Doing one of these tests first might give you some extra time to decide which track you want to pursue. But as Justin said, it really depends on what you do (or plan on doing) in your career as to which path might be more beneficial for you.
    As for the OCM level stuff, I wouldn't even think about it until you get the OCP. One step at a time... Same with OCP before OCA. That being said, my suggestions are just that, suggestions. You're free to take any exams/courses in any order, but you won't be able to obtain the certs until you have completed the requirements for each.

  • Embedded SQL against Oracle Question

    Software: Forte 3.0.J.
    Server Platform: HPUX 10.2
    Database: Oracle
    Problem Description: During the course of development, I ran into a
    problem using multiple columns in an sql UPDATE/SET statement. I was trying
    to update a.COLUMN_1 and a.COLUMN_2, which constitute part of the primary
    key of associative TABLE_A (a). In order for me to make the update, I
    needed to use the existing value of a.COLUMN_1 to lookup the new b.COLUMN_1
    in TABLE_B (b). Where a.COLUMN_1 = b.RELATED_COLUMN_1, I am able to find
    each b.COLUMN_2 that correspond to each a.COLUMN_2.
    I was able to resolve the issue by separating the two columns so
    that each had it's own select statement. Theoretically, it appears that
    this shouldn't work, because the SET statement for a.COLUMN_1 would cause
    the a.COLUMN_1 reference in the select statement of a.COLUMN_2 to be
    overwritten.
    In spite of this, I tried it, and it worked. I would like to
    understand why the sql works, and how sql actually executes the statement.
    Here is the sql:
    UPDATE TABLE_A a
    SET a.COLUMN_1 =
    (SELECT DISTINCT b1.COLUMN_1
    FROM TABLE_B b1
    WHERE b1.RELATED_CASE_ID =
    a.COLUMN_1 AND
    b1.RELATED_COLUMN_TYPE_CD = 'NEPHI'),
    a.COLUMN_2=
    (SELECT DISTINCT b2.COLUMN_2
    FROM TABLE_B b2
    WHERE b2.RELATED_COLUMN_1=
    a.COLUMN_1 AND
    b2.RELATED_COLUMN_TYPE_CD = 'NEPHI' AND
    b2.RELATED_COLUMN_2= a.COLUMN_2)
    WHERE a.COLUMN_1 = 100
    The table structure is as follows:
    TABLE_A: (primary keys are bolded) This is an associative table.
    Column_1 and Column_2 comprise the pk of one table; Column_3 and Column_4
    comprise the pk of another table. Assume that the Column_1 and Column_2
    values replacing the original values already exist in the parent table of
    which they form the pk).
    COLUMN_1
    COLUMN_2
    COLUMN_3
    COLUMN_4
    COLUMN_5
    TABLE_B: (primary keys are bolded) This is a reference table.
    COLUMN_1
    COLUMN_2
    RELATED_COLUMN_1
    RELATED_COLUMN_2
    RELATED_COLUMN_TYPE_CD
    To unsubscribe, email '[email protected]' with
    'unsubscribe forte-users' as the body of the message.
    Searchable thread archive <URL:http://pinehurst.sageit.com/listarchive/>

    If you do an explain plan or set autotrace on against this update statement,
    you'll find that the select operations are actually executed first by Oracle
    - I believe because of the nature of the transaction. Thus, no problem.
    Brian Wilson
    U.S. Bancorp Piper Jaffray
    [email protected]
    Phone (612) 342-5682
    From: David Pettit[SMTP:[email protected]]
    Reply To: David Pettit
    Sent: Friday, April 30, 1999 1:58 PM
    To: '[email protected]'
    Subject: Embedded SQL against Oracle Question
    Software: Forte 3.0.J.
    Server Platform: HPUX 10.2
    Database: Oracle
    Problem Description: During the course of development, I ran into a
    problem using multiple columns in an sql UPDATE/SET statement. I was
    trying
    to update a.COLUMN_1 and a.COLUMN_2, which constitute part of the primary
    key of associative TABLE_A (a). In order for me to make the update, I
    needed to use the existing value of a.COLUMN_1 to lookup the new
    b.COLUMN_1
    in TABLE_B (b). Where a.COLUMN_1 = b.RELATED_COLUMN_1, I am able to find
    each b.COLUMN_2 that correspond to each a.COLUMN_2.
    I was able to resolve the issue by separating the two columns so
    that each had it's own select statement. Theoretically, it appears that
    this shouldn't work, because the SET statement for a.COLUMN_1 would cause
    the a.COLUMN_1 reference in the select statement of a.COLUMN_2 to be
    overwritten.
    In spite of this, I tried it, and it worked. I would like to
    understand why the sql works, and how sql actually executes the statement.
    Here is the sql:
    UPDATE TABLE_A a
    SET a.COLUMN_1 =
    (SELECT DISTINCT b1.COLUMN_1
    FROM TABLE_B b1
    WHERE b1.RELATED_CASE_ID =
    a.COLUMN_1 AND
    b1.RELATED_COLUMN_TYPE_CD = 'NEPHI'),
    a.COLUMN_2=
    (SELECT DISTINCT b2.COLUMN_2
    FROM TABLE_B b2
    WHERE b2.RELATED_COLUMN_1=
    a.COLUMN_1 AND
    b2.RELATED_COLUMN_TYPE_CD = 'NEPHI' AND
    b2.RELATED_COLUMN_2= a.COLUMN_2)
    WHERE a.COLUMN_1 = 100
    The table structure is as follows:
    TABLE_A: (primary keys are bolded) This is an associative table.
    Column_1 and Column_2 comprise the pk of one table; Column_3 and Column_4
    comprise the pk of another table. Assume that the Column_1 and Column_2
    values replacing the original values already exist in the parent table of
    which they form the pk).
    COLUMN_1
    COLUMN_2
    COLUMN_3
    COLUMN_4
    COLUMN_5
    TABLE_B: (primary keys are bolded) This is a reference table.
    COLUMN_1
    COLUMN_2
    RELATED_COLUMN_1
    RELATED_COLUMN_2
    RELATED_COLUMN_TYPE_CD
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  • What are the best books for PL/SQL and Forms for BEGINNERS?

    I asked about learning Oracle Forms in an earlier thread. Some suggested Oracle training at official Oracle Training centers like Koenig. I just went to the Koenig site. The OCA & OCP Forms Developer Training Boot Camp is a whopping 2,610 USD. That’s like 1/4 Million LKR. It’s more that the yearly salary of both the 2 new developers we got and want to train. That’s out of the question.
    Some have suggested shadowing experiences programmers and team coding. Both options are out, since those things don't work here.
    Learning from sites such as Francois Degrelle's blog is no good for new people since they will get confused.
    I have come to the conclusion that the only way to do is to buy 2 books, one for PL/SQL and another for Oracle Forms, give it to them and ask them to follow the book and learn it and also give a time period like 2 or 3 months.
    What are the good books out there for BEGINNERS to learn PL/SQL and Forms?
    Edited by: Channa on Aug 8, 2010 10:08 PM
    Edited by: Channa on Aug 8, 2010 10:12 PM

    In addition to the books the chapter Application Developer's Guide - Fundamentals in the documentation is also worth giving a shot:
    http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14251/toc.htm
    Just for the record: I believe leaving them alone with the books won't do it. I'd at least define objectives (e.g. $chapters of the books in a week) and after they achieved them I'd test their knowledge of the individual objectives (like it was back in school :p ). By that you have control over how they are proceeding, you can focus on the things they didn't understand and you are able to eradicate some bad habits they might adopt during their studies.
    If you don't take your time to train them proper you won't get good developers anyway and you will loose much more time and money...
    cheers

  • Can i run all the SQL And PL/SQL in Oracle SQL Developer?

    hi all
    I have heard that Oracle Sql Developer is a free editor for Oracle DB from Oracle.
    Is it possible to run all the the procedres and functions in that editor
    is there any limitation for that ,can i run all the things that we can run on the SQL Plus
    if anybody knows please let me know
    thanks & regards

    Interesting way of putting it.
    When it comes to SQL and PL/SQL, SQLPlus and SQL Developer do not really 'run' very much.
    Most of the time, these things are just shells that pass the SQL and PL/SQL requests to the appropriate engine (database) which will run the command.
    The challenges are:
    - will the shell interpret the request as something to pass to an engine?
    - will the shell display the response from the engine appropriately?
    For answers to those questions, TongucY provided approriate links.

  • 10g doing VIEW type join even when no view in SQL - and performing poorly

    Using 10.2.0.2.0
    Every once in a while I see CBO deciding to use VIEW type join even when there is no view in the SQL and whenever it does that the performance just sucks.
    Example –
    SQL-
    SELECT a.emplid, a.empl_rcd, TO_CHAR (((a.dur) + (:"SYS_B_00")), :"SYS_B_01"),
    a.seqnum
    FROM ps_wrk_adhoc_tao5 a, ps_tl_prof_wrk5 b, ps_tl_empl_data c
    WHERE a.dur =
    (SELECT MAX (a1.dur)
    FROM ps_wrk_adhoc_tao5 a1
    WHERE a1.process_instance = :"SYS_B_02"
    AND a1.emplid = a.emplid
    AND a1.empl_rcd = a.empl_rcd)
    AND a.dur < TO_DATE (:"SYS_B_03", :"SYS_B_04")
    AND NOT EXISTS (
    SELECT :"SYS_B_05"
    FROM ps_tl_ta_exceptn5 q
    WHERE q.process_instance = :"SYS_B_06"
    AND q.exception_id = :"SYS_B_07"
    AND q.emplid = a.emplid
    AND q.empl_rcd = a.empl_rcd
    AND q.dur = a.dur)
    AND :"SYS_B_08" = :"SYS_B_09"
    AND c.emplid = a.emplid
    AND b.emplid = a.emplid
    AND c.empl_rcd = a.empl_rcd
    AND b.empl_rcd = a.empl_rcd
    AND c.effdt =
    (SELECT MAX (c1.effdt)
    FROM ps_tl_empl_data c1
    WHERE c1.emplid = c.emplid
    AND c1.empl_rcd = c.empl_rcd
    AND c1.effdt <= ((a.dur) + (:"SYS_B_10")))
    AND b.effdt =
    (SELECT MAX (b1.effdt)
    FROM ps_tl_prof_wrk5 b1
    WHERE b1.process_instance = :"SYS_B_11"
    AND b1.emplid = b.emplid
    AND b1.empl_rcd = b.empl_rcd
    AND b1.effdt <= ((a.dur) + (:"SYS_B_12")))
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    AND b.empl_status IN (:"SYS_B_14", :"SYS_B_15", :"SYS_B_16", :"SYS_B_17")
    AND a.process_instance = :"SYS_B_18"
    AND b.process_instance = :"SYS_B_19"
    Plan –
    Operation Object Name Rows Bytes Cost Object Node In/Out PStart PStop
    SELECT STATEMENT Optimizer Mode=CHOOSE 1 18
    NESTED LOOPS ANTI 1 153 13
    NESTED LOOPS 1 125 12
    NESTED LOOPS 1 103 10
    HASH JOIN 1 76 9
    INDEX RANGE SCAN SYSADM.PS0WRK_ADHOC_TAO5 7 245 2
    SORT AGGREGATE 1 21
    TABLE ACCESS BY INDEX ROWID SYSADM.PS_WRK_ADHOC_TAO5 6 126 3
    INDEX RANGE SCAN SYSADM.PS_WRK_ADHOC_TAO5 6 2
    VIEW SYS.VW_SQ_1 524 20 K 6
    HASH GROUP BY 524 40 K 6
    FILTER
    MERGE JOIN 1 K 124 K 5
    SORT JOIN 151 5 K 2
    INDEX RANGE SCAN SYSADM.PS_TL_PROF_WRK5 151 5 K 1
    SORT JOIN 214 8 K 3
    INDEX RANGE SCAN SYSADM.PS0WRK_ADHOC_TAO5 214 8 K 2
    TABLE ACCESS BY INDEX ROWID SYSADM.PS_TL_PROF_WRK5 1 27 1
    INDEX UNIQUE SCAN SYSADM.PS_TL_PROF_WRK5 1 0
    TABLE ACCESS BY INDEX ROWID SYSADM.PS_TL_EMPL_DATA 1 22 2
    INDEX RANGE SCAN SYSADM.PS_TL_EMPL_DATA 1 1
    SORT AGGREGATE 1 20
    FIRST ROW 1 20 2
    INDEX RANGE SCAN (MIN/MAX) SYSADM.PS_TL_EMPL_DATA 1 20 2
    INDEX RANGE SCAN SYSADM.PS_TL_TA_EXCEPTN5 1 28 1
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    Operation Object Name Rows Bytes Cost Object Node In/Out PStart PStop
    SELECT STATEMENT Optimizer Mode=HINT: RULE
    FILTER
    FILTER
    TABLE ACCESS BY INDEX ROWID SYSADM.PS_TL_EMPL_DATA
    NESTED LOOPS
    NESTED LOOPS
    TABLE ACCESS BY INDEX ROWID SYSADM.PS_TL_PROF_WRK5
    INDEX RANGE SCAN SYSADM.PS_TL_PROF_WRK5
    TABLE ACCESS BY INDEX ROWID SYSADM.PS_WRK_ADHOC_TAO5
    INDEX RANGE SCAN SYSADM.PS_WRK_ADHOC_TAO5
    INDEX RANGE SCAN SYSADM.PS_TL_EMPL_DATA
    SORT AGGREGATE
    TABLE ACCESS BY INDEX ROWID SYSADM.PS_WRK_ADHOC_TAO5
    INDEX RANGE SCAN SYSADM.PS_WRK_ADHOC_TAO5
    INDEX RANGE SCAN SYSADM.PS_TL_TA_EXCEPTN5
    SORT AGGREGATE
    INDEX RANGE SCAN SYSADM.PS_TL_EMPL_DATA
    SORT AGGREGATE
    INDEX RANGE SCAN SYSADM.PS_TL_PROF_WRK5
    The whole schema was analyzed using dbms.stats only yesterday. My question is why is Oracle doing VIEW, and how can I stop it from doing that. Hint is not an option.

    I understand that SQL Developer takes it's NLS settings from Preferences - Database - NLS Parameters. What I was not aware of is that when SQL Developer is run for the first time the NLS Parameters seem to be populated from the settings on the OS of the PC it is running on. To test that this was the case I did the following
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    I unzipped two clean SQL Developer instances (both Version 1.2.1). The first instance I first ran under my current PC set up without importing settings from a previous installation. The Preferences - Database - NLS Parameters - Language and Preferences - Database - NLS Parameters - Territory had been populated with English and United Kingdom.
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    When the first instance of SQL Developer was the checked under these OS settings the NLS Parameters were still English and United Kingdom.
    I was not aware this was the case and, if my test is correct, it seems to contradict the SQL Developer user guide http://download.oracle.com/docs/cd/E10405_01/doc/appdev.120/e10406/intro.htm#CHDBHCAG
    James
    Message was edited by: Jampat to include SQL Developer version number.

  • Uses for the Action Property with SQL and Oracle DB Adapters

    This thread is a complement to the Wiki Article
    BizTalk: Streamlining WCF SQL and Oracle Messaging-Only and Other Patterns
    The question.  In what circumstances is explicitly setting the Action value with the WCF SQL and Oracle DB bindings useful or beneficial. 
    A complimentary question.  Is it even possible to set the Action value to anything other than exactly what is required by the Message.
    I ask because of three very specific behaviors of the bindings themselves:
    The binding enforces a match between the Action and the Message, therefore...
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    The binding is able to correctly derive and perform the requested operation with the unspecific CompositeOperation.
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    Thoughts?

    Do you have any good suggestion to learn how to use action property with SQL and Oracle DB adapters?  I learn a lot from your replies for years in BizTalk forum. :)

  • Need a function name for Sql and Oracle

    Retrieving value of next line by doing opteration in previous row.

    Can you rephrase the question? Or better yet, provide an example? I'm not sure I understand what you are asking.
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    Justin

  • More and more questions don't provide any details. Is anyone going to address this?

    I notice that with the advent of the new forum software apparently asking a question has been made easier.
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    I was wondering whether anything can be done about addressing this.
    I'm not holding my breath, but I wonder why people here continue to spoon feed 'DBAs'  who are clearly too lazy to do anything (except using these forums as a chat room) to resolve their issues.
    Regards,
    Sybrand Bakker
    Senior Oracle DBA

    Yes, the "Announcements" are badly shown and don't stand out, meaning the SQL and PL/SQL FAQ is only visible by chance as the announcements switch automatically every 30 seconds (or whatever the timing is).
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    As to sybrand's question... I really don't know what we can do about it apart from just pointing people to the FAQ if they don't ask properly.
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