Asking questions, following them up

November 8, 2016

Hello Guys

Not all situations, however for certain interesting cases, I spend loads of time out of my professional and personal life to nail down the concerns, situations you highlight through the comments and I feel neglected and insulted when YOU don’t respond to my queries on timely manner. No, it doesn’t mean I am not going to respond to your specific questions, however I may not follow up the progresses you have made unless I see a keen involvement.

Further, many instances I contact you through the emails provided with your comments and other than 1-2 instances, I have never received replies. I send you emails to insure that your private information are not being visible through the comments area. Hence, please make sure that you will be using regularly used email accounts while commenting or asking questions.

Please follow the below guidelines if you are keen about getting answered

  • Provide me an email address that you are frequently checking
  • Regularly check for the comment replies (You get a notification on email when I reply to your comment)

If I am not supported by YOU as the initiator, please be informed that, I do have better things to do :)

Sorry for the “Attitude”, however, that is going to save me some precious time!

regards,

 

 

Advertisements

Posting Code Blocks with your free WordPress Blog

February 27, 2015

Please visit https://en.support.wordpress.com/code/posting-source-code/ for detailed information about how to post source code blocks with your free wordpress.com blog.
A tip from me: Have a look at the source code of wordpress support page opened ;) you “MAY” get more ideas. Okay I didn’t say that!
Let us look at some samples:

1

Will produce the below, syntax highlighted code block for you

your code here

2

Refer the above image, the usage of additional tags within the code tag will syntax highlight a short VB script, avoiding the gutter (line numbers)

Public Class Form1
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        Dim xmlFile As XmlReader
        xmlFile = XmlReader.Create("MyVMS.xml", New XmlReaderSettings())
        Dim ds As New DataSet
        ds.ReadXml(xmlFile)
        DataGridView1.DataSource = ds.Tables(0)
        DataGridView1.Columns(0).HeaderText = "Id"
        DataGridView1.Columns(1).HeaderText = "VM Name"
        DataGridView1.Columns(2).HeaderText = "Shutoff Mode"
  
    End Sub
End Class

Avoid leaving spaces between tags inside “code” tag, as doing so could totally mess-up the code blocks. Just put everything tightly spaced like following

language=”VB” gutter=”false”, there are no spaces between language & = or = & the opening ”

The language (or lang) parameter controls how the code is syntax highlighted. The following languages are supported:

  • actionscript3
  • bash
  • clojure
  • coldfusion
  • cpp
  • csharp
  • css
  • delphi
  • erlang
  • fsharp
  • diff
  • groovy
  • html
  • javascript
  • java
  • javafx
  • matlab (keywords only)
  • objc
  • perl
  • php
  • text
  • powershell
  • python
  • r
  • ruby
  • scala
  • sql
  • vb
  • xml

If the language parameter is not set, it will default to “text” (no syntax highlighting).

Code in between the source code tags will automatically be encoded for display, you don’t need to worry about HTML entities or anything.

Configuration Parameters

The shortcodes also accept a variety of configuration parameters that you may use to customize the output. All are completely optional.

  • autolinks (true/false) — Makes all URLs in your posted code clickable. Defaults to true.
  • collapse (true/false) — If true, the code box will be collapsed when the page loads, requiring the visitor to click to expand it. Good for large code posts. Defaults to false.
  • firstline (number) — Use this to change what number the line numbering starts at. It defaults to 1.
  • gutter (true/false) — If false, the line numbering on the left side will be hidden. Defaults to true.
  • highlight (comma-seperated list of numbers) — You can list the line numbers you want to be highlighted. For example “4,7,19”.
  • htmlscript (true/false) — If true, any HTML/XML in your code will be highlighted. This is useful when you are mixing code into HTML, such as PHP inside of HTML. Defaults to false and will only work with certain code languages.
  • light (true/false) — If true, the gutter (line numbering) and toolbar (see below) will be hidden. This is helpful when posting only one or two lines of code. Defaults to false.
  • padlinenumbers (true/false/integer) — Allows you to control the line number padding. true will result in automatic padding, false will result in no padding, and entering a number will force a specific amount of padding.
  • title (string) — Set a label for your code block. Can be useful when combined with the collapse parameter.

regards,

rajesh


Windows7bugs | Script Copying Instructions

November 9, 2014

Hello guys

Once in a while we receive complaints about scripts copied from our blog causing issues. We regret those issues and apologizing to everyone who suffered due to. Our blog is totally free until date and unfortunately, different browsers behave differently while parsing the code tags.

We were using

 [ code ] [ /code ]

tag for long time, found that few scripts getting totally messed up with double quotes being showsn and &quote etc. This has forced us to start using

[ sourcecode ] [ /sourcecode ] 

and realized if we have more than one block of scripts, the 2nd and consecutive scripts blocks being totally garbled.

With reference to above said, we request you to kindly make sure that the scripts those you copy from our posts are thoroughly checked for special characters prior applied. Especially registry related scripts as such attempts could completely wreck your Windows registry databases.

We hope you read us clearly and continue supporting us.

Regards,


ORA-00837: Specified value of MEMORY_TARGET greater than MEMORY_MAX_TARGET

January 7, 2018

Hi guys

Recently I was trying to understand the AUTOMATIC MEMORY MANAGEMENT feature of 11g onwards database & ended up in a drastic situation where I changed MEMORY_TARGET parameter with a value higher than MEMORY_MAX_TARGET

This has blocked the database from starting & a quick googling brought me to correct solution

As sys, connect to idle database

#sqlplus / as sysdba

SQL> create pfile from spfile;

–Applies to where spfile is used instead of pfile

Edit the pfile & comment/delete the MEMORY_MAX_TARGET parameter, get back to SQL>

SQL>create spfile from pfile;

SQL>startup;

This should resolve the error ORA-00837: Specified value of MEMORY_TARGET greater than MEMORY_MAX_TARGET

Hope this helps few folks out there!

regards,

rajesh


Oracle Application R12 | HTML Page load issues with Internet Explorer 11 | Windows 10

January 7, 2018

Hi guys

Our Oracle application R12 (12.0.6) instance has JDK 6 environment & We don’t have any plans to migrate to any recent versions of Oracle Application those are supported by later Java environments.

Almost all users those use Oracle applications are using JRE for many other engineering programs (Calculations programs by Vendors) & frequent updates of the JRE happens automatically at the user ends. We have a significant crowd that is still using JRE 1.6_20 as base JRE, who seldom have the following issue(s) discussed below.

Over Windows 10, Internet Explorer 11 fails to load HTML pages properly & many times after the logon to the application, the HTML menu page is loaded in the explorer, leaving a 4-5 white space lines. Refer the image below

halfpage

Basically this issue is observed with boxes those have latest JRE (x86) installed and used with parameter -Djava.vendor=”Sun Microsystems Inc.”

image

Oracle blogs strictly says, Compatibility view for Oracle applications R12 shouldn’t be enabled for Internet Explorer 11. I have tried enabling the Compatibility view for the Oracle applications, without any positive changes.

As a last resort, I reset the Internet Explorer 11

image

and after restarting the computer, Oracle Application HTML pages started loading correctly, without leaving white spaces between the IE Window and application top frame.

Hope this helps few folks out there!

rajesh


Windows 10 | WSUS Common Issues

January 7, 2018

 

Hi guys

After long interval I am doing a Windows OS related topic, for which actually I started this blog. Once after ironing out most of the dreaded issues with Windows 7, I needed to continue blogging & whole attention was shifted to Oracle. Alas! Long years!

WSUS is Microsoft’s solution for enterprises those need to update their Windows boxes without consuming Internet bandwidth. Ie, the updates are downloaded to a centralized repository & clients receive the updates periodically without going to INTERNET. Rest you can read about WSUS from knowledge bases.

Now, we have a problem. We are a super hybrid environment where many machines are still running Windows XP, few laptops held by management running Windows 7, 8.x & rest running Windows 10. We spent months before going online with WSUS. We had lost count of times we made everything from scratches. Thank GOD, today we have a very balanced WSUS environment that does the intended job for us!

Our issues are mostly related to the updates not being installed, failing throughout the attempts & blocking new updates being distributed to the client machine that has an already failed update in the pipe.

The solution to this awkward situation is simple.

  1. As Administrator go to Windows Services, stop and Windows Update service & disable it. By default Windows Update service has a startup mode “Manual”.
  2. Go go C:\Windows (or to the Windows installation folder), located the “SoftwareDistribution” folder & rename/delete it. Don’t worry about the list of updates those appear from your regular “View Installed update history” page. You can still see the list of updates previous installed by going to “Control Panel\All Control Panel Items\Programs and Features” & click on  “View installed updates” menu

 

image

Once the “SoftwareDistribution” folder is renamed or deleted, get back to the Services MMC & change the start mode back to “Manual” and start the Windows Update Service.

Normal conditions, this should initiate the Windows Update service afresh without any residues from the previous failed attempts & pending updates should get installed successfully.

 

Hope this helps few folks out there!

regards,

rajesh


Weblogic 12c | Admin Server will not start | ORA-28001 | ORA-28000

January 4, 2018

Hi guys

During 2016-2017 I have done few Weblogic 12c setups for my lab & my setup was accessed for some assignments after a long idle time which was exceeding many months…

I had Windows Services created for both Node Manager & Weblogic Admin servers using NSSM & realized there were something wrong once after many attempts to access the admin console turned out to be futile. So I tried to start the services manually using the scripts & the startWeblogic.cmd terminated with the following error:

Caused by: java.sql.SQLException: ORA-28001: the password has expired

As I always said, I am not a Weblogic guru, just another folk who tries to install and configure new Oracle stuffs. Hence I started searching google using the error that was provided to me during the previous run.

Unfortunately, nothing that could solve my issues were found and I opted to leave it as it is.

All I knew that passwords for few schemas related to Admin Server Repository have been expired. I did a QUERY to find out which schema were having expired passwords and all the repository related schemas were showing expired passwords

  1. DEV_IAU_VIEWER
  2. DEV_IAU_APPEND
  3. DEV_IAU
  4. DEV_OPSS
  5. DEV_STB

These are the schemas created when the repository is created & if the 12c database instance is NOT altered to allowing never expiring passwords, it was obvious the schema passwords expire on the expected dates.

I tried to reset the passwords for all the schema those were having expired password and altered the database instance to allow never expiring passwords. Tried to start the admin server, again ending up with the same error…

Recently I changed my work laptop with a new Dell 5480 & started setting up Weblogic 12c environment & as I had enough experiences with the configurations, was able to complete the entire setup within few hours time. This time I wanted to make sure that, due to password expiry I shouldn’t have the same troubles I had with my previous setup(s). So once everything was setup, I altered the database instance

ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED;

and confirmed that none of repository related schema has an expiry date associated with it.

So, for a lab setup this is more than enough to insure that I will not go through the troubles with expired passwords, causing Weblogic admin server to fail while started. What about a real situation where a DBA is facing this crisis?

So my fresh rounds of google searching started and I landed on a page https://linecode-notes.com/2017/09/08/unable-to-start-the-admin-server-in-forms-12c-due-to-ora-28001/ while using Google search term “oracle weblogic 12c dev_stb password expired”

I had gone through the post minutely and replicated the same scenarios at my end to insure that the instructions provided by the author is generic. Everything worked as expected, most probably because I altered the DEV_OPSS schema password with the same password I initially assigned to it. Hence there were no errors while I tried to start the Admin Server after running the wlst command.

The Only confusing part in the original post should be about the wlst command which says

modifyBootStrapCredential(jpsConfigFile='<Oracle_Home>/user_projects/domains/base_domain/config/fmwconfig/jps-config.xml’,username=’DEV_OPSS’,password=’xxx_n_pass’)

Where <Oracle_Home> should be replaced with actual path. For example, this is what I did. If you have given another name for the domain instead of suggested “base_domain”, replace the base_domain portion with correct name.

(In short, change the path according to your installation parameters!)

modifyBootStrapCredential(jpsConfigFile=’D:/Weblogic/Middleware/Oracle_Home/user_projects/domains/base_domain/config/fmwconfig/jps-config.xml’,username=’DEV_OPSS’,password=’PassWord123′)

Notice the “/” in the path, regardless whether you are on Windows or Unix environments, you must use forward slash “/”

& Most important, do not forget to alter the user with the new password

ALTER USER DEV_OPSS IDENTIFIED BY PassWord123;

Follow rest of the instructions available with the original post. The same author has another post dealing with ORA-28000 (Account locked) for Weblogic as well.

So guys, I hope, for a beginner with Weblogic like me, this is a tremendous information that could save another fresh install and configurations!

Hope this post helps few out there!

regards,

rajesh


Installing PHP on Windows 10 and IIS

December 26, 2017

One of the best tutorials explaining how to setup PHP with IIS 10 (Windows 10)

Warning! If you are using this setup for hosting WordPress/Joomla like CMS systems & themes, please insure the stacks are completely compatible with PHP 7.x

 

James D. McCaffrey

I’ve always liked PHP for creating dynamic Web pages. I find PHP to be much simpler than ASP.NET for some kinds of Web sites.

However, installing PHP on a Windows machine has always been kind of a pain in the patooty. It is possible install PHP using the Microsoft Web Platform Installer, but I prefer to manually install PHP because if something goes wrong using the Web Installer, it’s very, very difficult to fix, but errors in a manual install are easier to track down.

There are five basic steps to install PHP on a Windows 10 machine:

1. Enable (if necessary) IIS on the machine, and IIS-CGI on the machine.
2. Download and extract PHP to C:PHP
3. Configure the php.ini configuration file
4. Configure IIS to handle PHP page requests
5. Test everything

So, here we go. My instructions are highly abbreviated and are intended for someone who…

View original post 318 more words


Temporary Post Used For Theme Detection (4636cfb2-046f-4f76-85ed-6f1239334aad – 3bfe001a-32de-4114-a6b4-4005b770f6d7)

December 24, 2017

This is a temporary post that was not deleted. Please delete this manually. (0ce6c00d-f716-416b-80a2-122c8d316495 – 3bfe001a-32de-4114-a6b4-4005b770f6d7)


Learning WPF, CSharp(C#) with me | Part #2

December 6, 2017

Part #2

Subject: Why each trainer stick to console based development when my intention is to learn how to make “real” applications?

Hi guys,

Have you taken a training for development recently? If you are an established developer in any technology stack, the most frustrating thing could be the “basics”, you would groan and stir loads in the seat when a junior trainer goes through the concepts, basic commands set etc & would try to make the logic behind the approach

For example, if you want to learn C#, that you could use Web applications or desktop applications, you have a preset mind that wants to develop the applications those a user could interact with visibly. Not something that open a console and shows you few outputs and closes down.

I have asked the same question to many junior trainers during the courses and none was ever able to give me satisfactory answer. During my last attempt to refresh my C# skills I came to a conclusion towards this irritating question and it is simple like this

A console application when you want to print something on the screen, you just write a code snippet like this

static void Main(){

Console.WriteLine(“Hello World”);

}

And if you want to do the same with a Desktop application, the efforts are like this

You design a form (I will not use the real technical terms here, not at this stage)

You will add textboxes or labels to show “Hello World” (and you don’t really know how to make them at the first level)

Then you will develop the code part that should show the “Hello World” finally when the application starts

So for a trainer it becomes easy to deal with code part, which is the most important element of an application, rather than trying to teach a student the GUI development.

I will try to explain what I have assumed using real examples

Hellow World console application

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace HellowWorldConsole

{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hellow World");
}
}

}

Running the application will open a console window and show you the following

image

Now let us develop the same Hello World application using WPF

My GUI part has the following XAML Code

<Window x:Class="HelloWorldWPF.MainWindow"
xmlns="<a href="http://schemas.microsoft.com/winfx/2006/xaml/presentation"">http://schemas.microsoft.com/winfx/2006/xaml/presentation"</a>
xmlns:x="<a href="http://schemas.microsoft.com/winfx/2006/xaml"">http://schemas.microsoft.com/winfx/2006/xaml"</a>
Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded">
<Grid>
<TextBox x:Name="HWorld" Margin="95,150,117,124"/>
</Grid>

</Window>

and the code behind is


using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

namespace HelloWorldWPF

{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}

private void Window_Loaded(object sender, RoutedEventArgs e)
{
this.HWorld.Text = "Hello World";
}
}

}

and the output of both portion is seen as below

image

Now, it’s a common tendency of a seasoned programmer to perfect the GUI, because it creates the initial appeal. As you could see my textbox and the text appearing is not in sync, the height of the textbox is much bigger than the text that it looks somewhat mismatch…the time spent to perfect the GUI could become a real hurdle to progress with the training which must be limited certain hours per course!

Instead the trainers would approach the course, trying to teach the student the maximum coding part, then once the students are familiar with the technology, letting them explore the GUI development (Unless the course has the GUI development exclusively listed under the curriculum)

Once the above idea settled within me comfortably, I managed to sit patiently and learn the “basics” better than ever & was able to map what I learned to GUI much easily. Interested? However, my approach with this series will be developing GUI elements along with the basic coding. Do you have a different approach? do let me know through comments.

with the 1st part of this series I have posted a complete WPF solution to demonstrate what C# with WPF could do. That solution has many issues, like I am not handling folder/file access permissions or threading which is a must requirement when a program is going to run for unprecedented periods.

Be with me and we will be looking at much of them in coming parts.

regards,

rajesh