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…

Sharing a form to generate Excel file report from SQL query in Oracle Forms. This form can be used in Oracle Forms 6i and 10g / 11g.   Below is the screen shot of this form and could be download from the following link: Excel_Rep.Fmb     A procedure…

An example is given below to how to create a modal dialog window in Oracle Forms for asking user input and return the value to any text item.   The following is the screen shot of this demo and this form could be downloaded from the following link: C…

Write Post-Query trigger for the block you want to fetch the field value for display item.ExampleBegin   Select Ename into :datablock.dspname      from emp      where ecode = :datablock.ecode;   -- Field dspname in datablock will be populated with th…

I have written many posts related to triggers in Oracle Forms, I have given examples for Form Level triggers, Data Block Level triggers and Item Level Triggers. And in this tutorial I am just giving the simple tutorial to how to create a trigger in O…

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…

How to Create a Perl Based Custom Monitor on NetScaler https://support.citrix.com/article/CTX227727   Article | Configuration  | Created: 14 Sep 2017 | Modified: 27 Apr 2018   Applicable Products NetScaler Objective This article describes how to crea…

In this tutorial you will learn to create horizontal scrollable tabular or detail data block by using stacked canvas in Oracle Forms. As shown in below picture the first column Empno is fixed and middle columns Ename, Job, Mgr and Hiredate are scroll…

The database can use table compression to eliminate duplicate values in a data block. This section describes the format of data blocks that use compression. The format of a data block that uses basic and advanced row compression is essentially the sa…

Overview of Data Blocks Oracle Database manages the logical storage space in the data files of a database in units called data blocks, also called Oracle blocks or pages. A data block is the minimum unit of database I/O. Data Blocks and Operating Sys…

我们知道通过设置nologging选项.能够加快oracle的某些操作的运行速度,这在运行某些维护任务时是非常实用的,可是该选项也非常危急,假设使用不当,就可能导致数据库发生ORA-26040错误. 首先.构造使用环境. SQL> select tablespace_name,logging,force_logging from dba_tablespaces; TABLESPACE_NAME LOGGING FOR ------------------------------ --------…

基本关系:数据库---表空间---数据段---分区---数据块 数据块(data Block)一.数据块Block是Oracle存储数据信息的最小单位.这里说的是Oracle环境下的最小单位.Oracle也就是通过数据块来屏蔽不同操作系统存储结构的差异.无论是Windows环境,还是Unix/Linux环境,他们的操作系统存储结构和方式.甚至字符排列的方式都是不同的.Oracle利用数据块将这些差异加以屏蔽,全部数据操作采用对Oracle块的操作,相当于是一个层次的抽象. 二.Oracle所有对…

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…

An example given below for Oracle Forms, when a value exists then execute query for that value to display the correspondent record else allow user to create a new record for that value. The following is the example given for HR schema employee table,…

警告日志中发现如下报错信息: ORA-01578: ORACLE data block corrupted (file # 3, block # 1675)ORA-01110: data file 3: '/u01/app/oracle/oradata/PROD1/undotbs01.dbf' 报错提示为:undo表空间第1675个数据块出现损坏. 解决方法: 1.创建新的undo表空间undotbs2 SQL> create undo tablespace UNDOTBS2 datafile…

好吧,先说说造成崩溃的原因: 使用redhat 5.9 Linux 作为数据库服务器, 周五数据库正在使用中,硬关机造成数据库文件部分损坏(周一上班时,应用程序启动不起来,查看日志文件时,发现一个数据表映射失败) 使用pl/sql 查询数据文件时,发现 查询表正常,但是使用 where限制条件的时候,会造成崩溃      (只是为了说明命令,未保留当时警告截图) 然后出现 ORA-01578 data block corrupted , 因此 问题排查为当前数据表索引存在问题, 因此使用备份数据…

环境:hadoop-3.0.2 + 11 机集群 + RS-6-3-1024K 的EC策略 状况:某天,往 HDFS 上日常 put 业务数据时,发现传输速率严重下降 分析: 检查集群发现,在之前的传输中,发生过个别 datanode 临时不可用的状况. 而由于 hadoop EC 机制,当失效 datanode 小于容忍值 (这里是3),put 等传输任务仍然成功.但 hadoop 当时会报错,用于提示程序员,这个报错不会影响当此传输任务,故 put 等传输请求会返回成功.然后,缺失的 dat…

公众号:SAP Technical 本文作者:matinal 原文出处:http://www.cnblogs.com/SAPmatinal/ 原文地址:SAP ABAP7.5x系列之CREATE DATA&INTERFACE 前言部分 这一篇介绍两个知识点: 一个是在ABAP7.50以上版本中,使用CREATE DATA. 另一个是介绍ABAP7.50的INTERFACE. 希望读者看完这篇文章之后,对这两个概念不再陌生,知道如何使用及其使用原理. 创建数据对象 创建内部表和类型i的数据对象.…

BW数据库后台报错如下:F:\oracle\SBP\saptrace\diag\rdbms\sbp\sbp\trace ORA-01578: ORACLE data block corrupted (file # 29, block # 2889087)ORA-01110: data file 29: 'G:\ORACLE\SBP\SAPDATA2\SR3_18\SR3.DATA18'ORA-26040: Data block was loaded using the NOLOGGING opt…

本文转载自:https://blog.csdn.net/jhndiuowehu/article/details/50788287 一.基本概念:      1.block:文件系统中存储数据的最小单元,ext3文件系统中,创建时默认4k,分为存储文件数据的data block和存储目录数据的directory block      2.inode:又称“索引节点”,每一个inode对应一个文件或目录,记录了文件的大小.所占用的block以及目录的directory block信息.     3.…

Example is given below to sort detail data block data (toggle asc or desc) with push buttons used as header of grid, by setting ORDER_BY property of data block using SET_BLOCK_PROPERTY command.   The following is the screen shot of this example and t…

You have an Oracle Form in which you have multiple data blocks and requirement is to commit just one data block changes and not to effect any other data blocks. But suppose you have a commit_form button also in form which will commit all the data blo…

<Deep web data extraction based on visual information processing>作者 J Liu 上海海事大学 2017 AIHC会议登载引用 Liu J, Lin L, Cai Z, et al. Deep web data extraction based on visual information processing[J]. Journal of Ambient Intelligence & Humanized Computin…

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…

Obtaining Query Count Without executing a Query in Oracle D2k Obtaining a count of records that will be retrieved by EXECUTE_QUERY before actually performing it in a database block is especially useful when the requirement is to prevent navigation to…

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…

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…

Suppose you want to change multiple images after a specified time in home screen of your oracle forms application. Follow these simple steps to create image presentation with create_timer: (1) Place an image item on canvas and set the appropriate siz…

Download Source Code Providing an example form for creating hierarchical trees in Oracle Forms to control data block records. In this form whenever user selects any node in tree menu then corresponding record is displayed at right side.   This form i…

In this post you will learn how to specify any condition in enter query mode of Oracle Forms. Whenever Enter_Query command executes Oracle Forms comes into enter query mode and in that mode you can specify some criteria to filter the records and afte…