Suppose you want to populate a non-database data block with records manually in Oracle forms. This task can be done using a cursor.   Below is the example given for hr.job_history table, where user input the employee id in upper block and click on th…

Example is given below to validate a Text Item in Oracle Forms with specific rules condition which can be define at run time with the use of T-List item and When-Validate-Item trigger.   Below is the screen shot of this example form which can be down…

SYSTEM.CURSOR_BLOCK Determining current block in Oracle Forms Using SYSTEM.CURSOR_BLOCK system variable. The value that the SYSTEM.CURSOR_BLOCK system variable represents depends on the current navigation unit:If the current navigation unit is the bl…

Highlight a Text Item in Oracle Forms With Visual Attribute It is very necessary to highlight the current cursor text item in data entry forms so that a user can easily notice the current item. Steps to highlight current item 1.   Create a visual att…

Suppose you have two T-List items in form and you want  to shift element values from one list to another in Oracle Forms, here is the example given below for the same. Create two buttons also between list items as shown in picture in the bottom of th…

Example is given below to Populate a List Item in Oracle Forms using Create_Group_From_Query , Populate_List and Populate_Group command. In this example you can specify the query at run time to populate the list item with that query result.   Followi…

You want to connect multiple databases in oracle forms to perform certain tasks, for example you need to execute ddl or dml statements against databases but when you try to use dblink it gives you error or suddenly quits from the oracle forms.  Solut…

You want to add a value in Combo List item in Oracle Forms, by typing it in combo list box text area. Here is the example is given for the same, you can write following block in When-Validate-Item trigger for the combo box item: Write the following c…

Check the following 8 Links for best Oracle Forms examples with source code (Fmb files), which will work in any version of Oracle Forms. The examples are given for "Oracle Form's Triggers", "Hierarchical Trees", "Stacked Canvases&…

一．RAC 全局等待事件说明 在RAC环境中,和全局调整缓存相关的最常见的等待事件是global cache cr request,global cache busy和equeue. 当一个进程访问需要一个或者多个块时,Oracle会首先检查自己的Cache是否存在该块,如果发现没有,就会先通过global cache赋予这些块共享访问的权限,然后再访问.假如,通过global cache发现这些块已经在另一个实例的Cache里面,那么这些块就会通过Cache Fusion,在节点之间直接传递,…

错误: 10/12/08 20:10:31 INFO hdfs.DFSClient: Could not obtain block blk_XXXXXXXXXXXXXXXXXXXXXX_YYYYYYYY from any node: java.io.IOException: No live nodes contain current block. Will get new block locations from namenode and retry 原因: Datanode 有一个同时处理文件…

Oracle Form & Reports developer jobs are always in demand, candidates who have Oracle D2k, Oracle Forms & Reports, PLSQL set of skills can find the job through the following links:   http://jobsearch.naukri.com/oracle-forms-and-reports-jobs   http…

In this tutorial you will learn to copy the records from one data block to another data block on same form and on a same canvas in Oracle Forms. Below is the screen shot of the form and you can download this form for your reference from the following…

Example is given below to create a data block based on From Clause query in Oracle Forms. The following are the steps: Create a data block manually and set the following properties: You can specify different query as per your need. Then create the it…

Add combo list / drop down list item element at runtime in Oracle forms.SyntaxPROCEDURE ADD_LIST_ELEMENT(list_name VARCHAR2,list_index, NUMBERlist_label VARCHAR2,list_value NUMBER);ExampleDeclare  nElmntCount Number;Begin   -- First count the total l…

The below plsql program unit could be used in a WHEN-NEW-FORM-INSTANCE trigger to initially populate the hierarchical tree with data in Oracle forms.DECLAREhtree ITEM;v_ignore NUMBER;rg_emps RECORDGROUP;BEGIN-- Find the tree itself.htree := Find_Item…

Suppose you want to scan a tabular grid block (loop through all records in detail block) from top to bottom in Oracle forms. You can do this task by using :system.last_record system variable to determine whether it is last record in a block and then…

The example given below for writing text file or CSV using Text_IO package from a tabular block in Oracle Forms.   Suppose there is a tabular grid data block "Job_History" in your forms and you want to write a CSV on click of a button by reading…

Set_Item_Property is used to change an object's settings at run time. Note that in some cases you can get but not set certain object properties. The following are Syntax of Set_Item_property command:SET_ITEM_PROPERTY(item_id ITEM,property NUMBER,valu…

title author date CreateTime categories win10 uwp Window.Current.Dispatcher中Current为null lindexi 2018-08-10 19:16:53 +0800 2018-2-13 17:23:3 +0800 Win10 UWP 本文说的是进行网络中异步界面出现的错误,可能带有一定的主观性和局限性,说的东西可能不对或者不符合每个人的预期.如果觉得我有讲的不对的,就多多包含,或者直接关掉这篇文章,但是请勿生气或者发…

Oracle Forms is having its default records filter, which we can use through Enter Query mode to specify some search criteria or to filter records before display, but you can also create your own filter, which can be more user friendly and easy to use…

See also: Why And When To Use Pre-Update and Pre-Insert Triggers In Oracle FormsPre-Update Fires during the Post and CommitTransactions process, before a row is updated in Oracle Forms. It fires once for each record that is marked for update.The foll…

Pre-Query trigger in Oracle D2k / Oracle Forms DescriptionFires during Execute Query or Count Query processing, just before Form Builder constructs and issuesthe SELECT statement to identify rows that match the query criteria.Definition Level form or…

Pre-Form trigger in Oracle Forms fires during the form start-up, before forms navigates to the first navigable data block of that form. Use a Pre-Form trigger to perform the tasks such as maximize the forms_mdi_window, initialize some Global variable…

Clear_Block built-in clears all records from the current data block and if the user had made some changes in records which have not been committed, then Oracle Forms processes the records depending on the argument passed to the Clear_Block procedure.…

Execute_Query command is used to fetch all the records for current database data block in Oracle Forms, actually its executes query in current data block. Syntax EXECUTE_QUERY; Clears the current block, opens a query, and fetches a number of selected…

Suppose you want to give the data backup option in Oracle Forms application to some client users, where you have installed Oracle 11g client or direct from server.The following procedure executes a batch file placed in current working directory of th…

When a query is open in the block, the Post-Query trigger fires each time Form Builder fetches a record into a block. The trigger fires once for each record placed on the block's list of records. Usage NotesUse a Post-Query trigger to perform the fol…

Example is given for Pre-Query and Post-Query triggers in Oracle Forms, with using Display_Itembuilt-in in Post-Query triggers to highlight fields dynamically.   This is the screen shot below for this example:   You can also download this form from t…

Example is given below to fetch any Oracle objects DDL script using DBMS_Metadata.Get_DDL command in Oracle Forms using Forms_DDL command.   You can download this form for free including source code with following link from Google Drive Dbms_Utility.…