Problem on installing Oracle product in Linux through GUI

When installing Oracle Database/JDE/Server Manager in Linux GUI mode using Oracle account, the following error occur.

To rectify the issue:

1. login to the Linux console with root account
2. type in DISPLAY=:0.0
3. type in export DISPLAY
4. type in xhost +
5. login to oracle account su - oracle
6. type in DISPLAY=:0.0
7. type in export DISPLAY
8. type xclock and see if the previous said error still appears or not. 
9. if a clock appears that means configuration is done. 
10. You may proceed to install using oracle account in Linux. 

Install GUI in Oracle JD Edwards 9.1.4.4 VM Templates Servers

1.   Issue following command to install the GNOME and X system.

      [root@E1SVR ~]# yum -y groupinstall "X Window System"
      [root@E1SVR ~]# yum -y groupinstall "GONE Desktop Environment"

2.   Reboot server.

3.   Start GUI with the following command

      [root@E1SVR ~]# init 5

Orphan Shared Drives Removal

Problem :

When accessing Windows network drive, it did not ask for login and straight away display a pop out stating that you do not have permission to access the drive. Please contact administrator.

Solutions :

1. Navigate to the HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices section of the Windows registry.
2. Locate the mapped network drive that you want to clear. Each drive will have a registry entry labeled as "\DosDevices\" followed by the letter assigned to it.
3. Right-click on the drive entry and select the "Delete" option from the contextual menu, then confirm your decision to remove the mapped drive letter assignment.
4. Restart your Computer to reread the Registry.

Configuring Test mail in Microsoft Windows Powershell

By Modifying the script to your preferences, a test mail can be send from Windows PowerShell

$EmailFrom = “esmondeyong@gmail.com”
$EmailTo = “admin@titanfour.com.my”
$Subject = “Sent from PC PowerShell”
$Body = “What do you want your email to say”
$SMTPServer = “smtp.gmail.com”
$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 587)
$SMTPClient.EnableSsl = $true
$SMTPClient.Credentials = New-Object System.Net.NetworkCredential(“username”, “password”);
$SMTPClient.Send($EmailFrom, $EmailTo, $Subject, $Body)

• $EmailFrom = Sender's Email address.
• $EmailTo = Recipient’s Email address.
• $Subject = The subject for the Email that you want to send.
• $Body = Content for the Email.
• $SMTPServer = Your email SMTP Server

Change the following under $SMTPCleint.Credentials

• username = Email username
• password = Email password

Add RSA authentication for Oracle VM JDE Template Servers

Tools needed:
PuTTY (Download)
PuTTY Key Generator (Download)

1. Open PuTTY Key Generator, click on the Generate button.

2. Move the mouse cursor around until the Key generation bar is filled up.

3. After finished generating the key, you should be able to see something as follow:

4. Save both Public Key and Private Key in a location that you are familiar with. 

5. Copy the Public key phrase. Make sure it is in a line.

Example: 

ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAQEAghxBZAfgU277+6H0qo95siux76T3CTP+25LOzxQdYRl8X+DsaPf8F8pMNM0CCjF4wBIFGmVBzFCwANtIpmkt2G7fib9ckjHT9FfQhydQeMQQZ+SmQeD2imOj4S+FRLzQg5Et/wixr7WXAybJzpBa1UrJ+u7izC3y7+/20RtlzIrEf5MmEOqvYIFpQn0n+pCweCHo1haYPeXMOYpda7Xwd2CAEUk/sq/dqGLJwHVtuB4sr3mTv/7wXvhAMgJxgId6vFh2G8sw6x+f+cuLd/oJxLILilugw1QxhrbtsDtENhM1AP9ms26LHkAmczFM9/JdMV0pobeLXNLULxlO1SPwlw== rsa-key-20150211

6. Open PuTTY.exe and login to target server which you want to use RSA Authentication.

7. Once login, make sure you are on the root home folder (/root). Enter the following command line by line:

# mkdir .ssh   

# chmod 700 .ssh

# cd .ssh

# vi authorized_keys

Paste the public-key copied from step 5 and save the file by click on esc key from the keyboard and then type :wq

8. Open PuTTY.exe again. 

For Host Name, type in the root@[server IP address]. Put a name of your preference in the Saved Sessions text box. 

9. From the left panel, Click on Connection -> SSH -> Auth. Click Browse, navigate to the location where the private key is saved from Step 4.

10. Once the private key is added, go back to Session, make sure the hostname and saved sessions is correct. Then click on the Button Save.

11. To test that the configuration is correct, select TESTSERVER and click the Open button. 

12. You should see the screen similar like below if it is successful.