Posting Code Blocks with your free WordPress Blog

February 27, 2015

Please visit for detailed information about how to post source code blocks with your free 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:


Will produce the below, syntax highlighted code block for you

your code here


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
        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.



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.


Windows 10 | Install Oracle Products

August 10, 2015

I’m sure you guys didn’t hear much from us for a long time. Actually we were been too busy testing Windows 10 to make sure that we can safely migrate our existing domain joined computers. Almost everything works as they were working on Windows 8.x and we confirm the following to you:

  1. You can install Oracle developer Suite 10g in Windows 10 Professional edition, following the same hacks provided as provided with the following post
  2. You can install Toad 10.x without any issues over Windows 10 without any specific hacks
  3. You can install 11g client 32Bit without any issues, by ignoring the only one warning at the installation startup
  4. You can get over with the Oracle VirtualBox NIC related issues by installing the test build 5.0 (download from VirtualBox test builds)


We are yet to test the developer suite 6i, once completed we will update this thread.

So, we hope you would be more than happy to know that, almost all legacy Oracle products are installable over Microsoft’s latest OS!!



for Windows7bugs


Windows 7/8.x/10 Missing Volume Control Icon

July 23, 2015

A many times a silly something that could annoy a user while using Windows 7/8.x is missing tray icon(s) for volume control, network connection (rarely), which allow the users to toggle the volume on off and here is the quick fix to bring those tray icons back without restarting the computer

Start Task manager (CTRL+SHIFT+ESC altogether)

Scroll down and locate “Windows Explorer” , right click the process and restart!


Once the process restarted, you MUST able to see the tray icons relaunched.

Cheers guys & enjoy

VirtualBox | SATA vs SCSI

July 14, 2015

Recently I tried to build a cloned instance of our production instance over VirtualBox for some emergency issues faced by our inventory module. As this instance was supposed to be only accessed by me, I opted to use my desktop machine for the same. Throughout the last many years I built my own machines, choosing the best available hardware at the time of building them. My current desktop configuration is like following

i7 processor, 16GB memory, 2x1TB 7200 RPM HDD, 2x2TB 5200 RPM HDD, 1x500GB HDD for the OS (Windows 8.1 64Bit)

and throughout the years I built dozens of Virtual Machines using Oracle VirtualBox, mainly for testing un-certified Oracle & other products in a sand-boxed environment, against the crippled VMplayer, VirtualBox’s unrestricted interface supported almost everything I needed from a virtual environment.

So I built my R12 instance, that is around 600GB roughly in size with almost 4.5-5 years of business data, media etc. The following resources were dedicated for the fresh VM

  • 4 processors
  • 10GB memory
  • 40GB fixed size SATA VDI for the Operating System (I used both OEL 5 & OEL 7 64bit)
  • 1.2TB fixed size SATA VDI for the instance files
  • A dedicated D-Link 10/100MB NIC

Once the instance came online, I removed, cancelled all the scheduled concurrent programs, changed the database level parameters like job_queue_processes etc, however the lag experienced throughout the access attempts remained the same. Sometimes the HTML pages took 5-6 minutes to open, forms based modules took 8-10 minutes to open and timeouts were happening, frustrating me to the most possible levels

That is when I decided to give VMPlayer a try, I converted the existing VDI for the OS as vmdk and created a fresh 850 fixed size vmdk for the instance files and attached the same as SCSI to the VM. Did the complete clone process and to my utter surprise, the login page loaded within a minutes once after the instance was started!

This lead me to do various attempts with the fresh instance, I was able to shutdown the instance much faster, forms were opening faster, though LOVs having more than thousands of items were taking more time than anticipated

Once again, I created another fresh VM with VirtualBox and attached the disks created for VMplayer with it and repeated the tests. Well, I got the same performances from the new VM and somehow I came to a conclusion that, both VirtualBox and VMPlayer provide better I/O for SCSI interfaces compared to plain SATA emulators, ironically, the disks were created over SATA drives!

This difference you may not experience with VMs those are not hosting resource hungry applications like Oracle E-Business Suite. So, if you are attempting what I had described above and notice the differences, please update me with comments section.







VirtualBox | CentOS/Oracle 7.x Linux| Memory cannot be read/write error

July 7, 2015

Hi guys

Many times I pointed out the importance of testing technical previews, latest releases of other OS using VirtualBox as the early releases are prone to have frustrating bugs, which are many time specific to a particular hardware or distro. I was playing around with Oracle linux 7, which is a forked version of Red Hat Linux 7, named Unbrekable Linux by Oracle. Relatively I hardly had many issues with guest OS in recent times while tested over VirtualBox  and with OEL 7 guest, all of a sudden I started getting memory read errors like the one you can find with below image,

7-vb-memory error

once after the guest addons were installed. Although the change log of VirtualBox for 4.3.28 states the 3D bugs fix,  3D acceleration is the main culprit for the guest crashing once after a login attempt.

VirtualBox change log:

So, all you need to do is to disable the 3D acceleration for the guest using the settings panel. Well, unless you are going to use your VM for some “gaming” ;) I think this temporary fix should get you online with your CentOS/OEL 7.1 VM box!

Additional reading:



Oracle EBS R12 | Inventory | Receipts stuck in pending status

June 30, 2015

Sometimes the receipts against internal requests could get into trouble with the status pending. While the requester tries to receive the transaction, receipts get created with zero quantities and the internal sales order yet in open status and the quantities are seen in staging location. Please follow the below to delete such pending lines to receive the quantities once again to the targeted sub-inventory

As inventory super user

Transactions -> Receiving -> Transactions Status Summary


Under the tab “Supplier and Internal”

Select the “Destination” tab

Enter the name of the requester name (the name of the user who has created the internal material request to limit the lines fetched) & find the transactions

Delete the lines matching the transaction & save


Go back to receipts and enter the request number once again to receive the materials


for Windows7bugs


Oracle EBS R12, Install/Clone over Oracle/Red Hat Linux 7.x

June 30, 2015

Hi guys


(and dozens of EBS R12 related blogs and oracle community posts)


As far I could recollect, Oracle EBS R12.0.x & R12 12.1.x are not certified yet for Linux 7, let it be Red Hat Linux or Oracle enterprise Linux. Does the certification path really make guys like us trying to clone, install EBS R12 over yet to be certified platforms? Well, my case, I always did attempt & succeeded to a certain levels. Starting with Oracle 10g over Windows 7, 8 etc.

This time, my attempt was to clone our existing EBS R12 12.0.6 instance from Red Hat linux Enterprise 5 64Bit to Oracle Enterprise linux 7 64Bit.

I can’t say whether it is a rightful thing for you or for your environment. For me it was a fun project, that I achieved to a maximum satisfactory level.

Environment: Source System

Red Hat Linux 5.11 64Bit, 48GB physical memory, HBA interfaced external storage, single node EBS R12 12.0.6 with Oracle database database

Environment: Target System

1. Oracle VirtualBox VM with 4 processors, 10GB memory, Oracle Enterprise linux 7.1 with GUI on demand

VDI fixed size of 1.3T holding both application tier & database tier files copied from source system

2. A Desktop machine with i7 Processor, 4.5 TB Storage, 16GB physical RAM for real hardware performance testing


How to?

Oracle Enterprise Linux 7 is not certified for EBS R12.0.x , hence I was unable to find the pre-requisites install for EBS R12 for the OS. The hacks started from this point onward

(Please make sure that you fully updated your OEL 7.1 box prior the attempts listed below)

As root switch the directory to

cd /etc/yum.repos.d

Go to

and install the ol6 repo following instructions provided

Open the ol6 repo file using gedit/vim and enable the add-on repo

install pre-requisites for EBS R12 by issuing the following command

yum install oracle-ebs-server-R12-preinstall -y

Once the installation completed, you will notice that you have two new users created



If your cloned instance was having different user names for both application and database, create same usernames and add them to relevant groups

for example applprod to oinstall group and oraprod to dba, oinstall groups (mandatory)

Special note: If you are attempting these hacks for Production instances, sorry buddy, YOU will never be supported by Oracle as they have recently confirmed to me through a private message that they don’t have any plans to certify 12.0.x versions on OEL 6 or 7

Prior you attempt to clone or install the 12.0.6 instance over OEL 6, 7 make sure that you have taken care of few things prior the attempt. There are few OS level files formatting mandatory for Oracle applications, those caused me almost 3 weeks of reading various blog posts, and NOT a single solution to address a weird error associated with “Error: Missing ormi[s]://<host>:<port>” error while shutting down the application services using script file! And the reason was default formatting of /etc/hosts file by OEL 7 installation!


The /etc/hosts file must be formatted like below with your OEL/RHEL 7.x installation localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6 erp-prodbak #Your box erp-prod #Your production server, if at all required

Rest of the network related mandatory elements specified in the reference documents could be ignored, or you may format them as well. If you are going to touch your /etc/resolv.conf file at all, make sure that after changing the content of the resolv.conf, you make it read-only by issuing the following command

chattr +i resolv.conf

else after a reboot, this file be rewritten by the networking admin services

Now let us refer to the /etc/sysctl.conf & /etc/security/limits.conf files, which are setting system level parameters for the application. While I noticed that the previously configured parameters were causing performance degradation once after the clone, I just copied these elements from a 12.1.3 vision instance and replaced to find that, my cloned instance started flying, giving me much better performance than our Production instance that has the latest hardware and 48GB physical memory!

Once again, thoroughly check the below parameters, if something looks not appropriate for your environment, refrain from updating

as a precaution, do a backup for both the above mentioned files

cp /etc/sysctl.conf /etc/sysctl.conf.original
cp /etc/security/limits.conf /etc/security/limits.conf.original

Now using your favorite editor, replace the content of you sysctl.conf file with following

# Kernel sysctl configuration file for Red Hat Linux
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
# sysctl.conf(5) for more details.

# Disabled IPV6 on all interfaces for JAVA 1.5

# net.ipv6.conf.all.disable_ipv6 = 1

net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.all.disable_ipv6 = 1
# Controls IP packet forwarding
net.ipv4.ip_forward = 0

# Controls source route verification
net.ipv4.conf.default.rp_filter = 1

# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0

# Controls the System Request debugging functionality of the kernel

# Controls whether core dumps will append the PID to the core filename
# Useful for debugging multi-threaded applications
kernel.core_uses_pid = 1

# Controls the use of TCP syncookies
net.ipv4.tcp_syncookies = 1

# Controls the maximum size of a message, in bytes

# Controls the default maxmimum size of a mesage queue

# Controls the maximum shared segment size, in bytes

# Controls the maximum number of shared memory segments, in pages

# For 11g, Oracle-Validated setting for fs.file-max is 6815744
# For 10g, uncomment 'fs.file-max = 327679', and comment 'fs.file-max = 6553600' entry and re-run sysctl -p
# fs.file-max = 327679
fs.file-max = 6815744

# Oracle-Validated setting for kernel.msgmni is 2878
kernel.msgmni = 2878

# Oracle-Validated setting for kernel.msgmax is 8192
kernel.msgmax = 8192

# Oracle-Validated setting for kernel.msgmnb is 65536
kernel.msgmnb = 65536

# Oracle-Validated setting for kernel.sem is '250 32000 100 142'
kernel.sem = 250 32000 100 142

# Oracle-Validated setting for kernel.shmmni is 4096
kernel.shmmni = 4096

# Oracle-Validated setting for kernel.shmall is 1073741824
kernel.shmall = 1073741824

# Oracle-Validated setting for kernel.shmmax is 4398046511104 on x86_64 and 4294967295 on i386 architecture. Refer Note id 567506.1
kernel.shmmax = 4398046511104

# Oracle-Validated setting for kernel.sysrq is 1
kernel.sysrq = 1

# Oracle-Validated setting for net.core.rmem_default is 262144
net.core.rmem_default = 262144

# For 11g, Oracle-Validated setting for net.core.rmem_max is 4194304
# For 10g, uncomment 'net.core.rmem_max = 2097152', comment 'net.core.rmem_max = 4194304' entry and re-run sysctl -p
# net.core.rmem_max = 2097152
net.core.rmem_max = 4194304

# Oracle-Validated setting for net.core.wmem_default is 262144
net.core.wmem_default = 262144

# For 11g, Oracle-Validated setting for net.core.wmem_max is 1048576
# For 10g, uncomment 'net.core.wmem_max = 262144', comment 'net.core.wmem_max = 1048576' entry for this parameter and re-run sysctl -p
# net.core.wmem_max = 262144
net.core.wmem_max = 1048576

# Oracle-Validated setting for fs.aio-max-nr is 3145728
fs.aio-max-nr = 3145728

# For 11g, Oracle-Validated setting for net.ipv4.ip_local_port_range is 9000 65500
# For 10g, uncomment 'net.ipv4.ip_local_port_range = 1024 65000', comment 'net.ipv4.ip_local_port_range = 9000 65500' entry and re-run sysctl -p
# net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.ip_local_port_range = 9000 65500

# Oracle-Validated setting for vm.min_free_kbytes is 51200 to avoid OOM killer
vm.min_free_kbytes = 51200

Save the file and issue the following command

sysctl -p

Now, change the limits.conf file with following content

# /etc/security/limits.conf
#Each line describes a limit for a user in the form:
#&lt;domain&gt; &lt;type&gt; &lt;item&gt; &lt;value&gt;
#&lt;domain&gt; can be:
# - an user name
# - a group name, with @group syntax
# - the wildcard *, for default entry
# - the wildcard %, can be also used with %group syntax,
# for maxlogin limit
#&lt;type&gt; can have the two values:
# - "soft" for enforcing the soft limits
# - "hard" for enforcing hard limits
#&lt;item&gt; can be one of the following:
# - core - limits the core file size (KB)
# - data - max data size (KB)
# - fsize - maximum filesize (KB)
# - memlock - max locked-in-memory address space (KB)
# - nofile - max number of open files
# - rss - max resident set size (KB)
# - stack - max stack size (KB)
# - cpu - max CPU time (MIN)
# - nproc - max number of processes
# - as - address space limit
# - maxlogins - max number of logins for this user
# - maxsyslogins - max number of logins on the system
# - priority - the priority to run user process with
# - locks - max number of file locks the user can hold
# - sigpending - max number of pending signals
# - msgqueue - max memory used by POSIX message queues (bytes)
# - nice - max nice priority allowed to raise to
# - rtprio - max realtime priority
#&lt;domain&gt; &lt;type&gt; &lt;item&gt; &lt;value&gt;

#* soft core 0
#* hard rss 10000
#@student hard nproc 20
#@faculty soft nproc 20
#@faculty hard nproc 50
#ftp hard nproc 0
#@student - maxlogins 4
# End of file

#oraprod #Oracle user

#applprod #Application user

# Oracle-Validated setting for nofile soft limit is 131072
oraprod soft nofile 131072

applprod soft nofile 131072

# Oracle-Validated setting for nofile hard limit is 131072
oraprod hard nofile 131072

applprod soft nofile 131072

# Oracle-Validated setting for nproc soft limit is 131072
oraprod soft nproc 131072

applprod soft nproc 131072

# Oracle-Validated setting for nproc hard limit is 131072
oraprod hard nproc 131072

applprod hard nproc 131072

# Oracle-Validated setting for core soft limit is unlimited
oraprod soft core unlimited

applprod soft core unlimited

# Oracle-Validated setting for core hard limit is unlimited
oraprod hard core unlimited

applprod hard core unlimited

# Oracle-Validated setting for memlock soft limit is 50000000
oraprod soft memlock 50000000

applprod soft memlock 50000000

# Oracle-Validated setting for memlock hard limit is 50000000
oraprod hard memlock 50000000

applprod hard memlock 50000000


Install unzip version 5 from

(This is mandatory as 12.0.x doesn’t support unzip version above 5, and your cloning will fail with error notifying unzip is not supported)

Source the library file to /usr/lib from your source system, as the soft link hack will not work. If the is already a soft link in your source system, move the source file “” from source to target box and create the soft link.

Now go ahead and enjoy the cloning/installation of your R12 12.0.x, or R12.1.x releases over OEL/RHEL 7.x (CENTOS is GNU release of RHEL, so you may experiment with that distro as well, nothing guaranteed though)

Please be warned, I have read many places that, many modules do not work with Linux 6,7 releases. Hence, the entire exercises you painfully executed may turn futile at later stages, and once again, if you have a live Oracle support, do not attempt such with your Production instance!

Enjoy guys :)


for Windows7bugs






AutoConfig could not successfully instantiate the following files INSTE8

June 27, 2015

windows7bugs: INSTE8 error while cloning Oracle EBS R12


DB autoconfig Error:
[AutoConfig Error Report]
The following report lists errors AutoConfig encountered during each
phase of its execution. Errors are grouped by directory and phase.
The report format is:

AutoConfig could not successfully instantiate the following files:
Directory: /d01/UAT/db/tech_st/ INSTE8

AutoConfig is exiting with status 1

Due to missing of in Target DB.

Check is found in $ORACLE_HOME/appsutil/template Target DB, if not found copy from source DB and run

Anand Kumar V
Oracle Apps DBA

View original


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