Monday, May 29, 2017

Oracle 12c DBA Training

DBA University is excited to announce Oracle DBA Training course in the latest Oracle 12c R1 and 12c R2 versions Each training schedule runs for a period of 64 hours spread over 8 weekends. The live online training sessions are held from 8:00 am to 12:30 pm central time (with a 30 minute break) every Saturday and Sunday. We also have an on demand training (recorded training) offering for this course.

This course will help students prepare for majority of the topics required to pass the Oracle Database 12c Administration 1Z0-062 examination towards Oracle OCA certification (Oracle Certified Associate). It contains various other topics with practical exercises that are required for real world success.

Course Highlights

1) 64 hours course duration.
2) Training will be on the latest Oracle 12c R2 and 12c R1 versions.
3) Saturday, Sunday - 8:00 am to 12:30 pm central time (with a 30 minute break).
4) 500+ pages training material available for email download through Dropbox link.

Lab work

1) Each student will get a remote lab computer to practice the course work.  
2) The training will be on both Oracle 12c R2 and 12c R1 versions with Linux 7 64-bit as the operating system.
3) 16 hours Remote LAB access on Saturday, Sunday
4) 6 hours Remote LAB access on weekday evenings.
5) Students can use the Windows Remote Desktop Connection program to connect to the remote lab server.

Links and Resources

2) Click here for a FREE DEMO session  (Name and Email only)
3) Click here to register for the live online training course
4) Students who are interested in the on demand training (recorded training) should click here to purchase.

Saturday, May 27, 2017

How to configure and start vncserver on Linux 7


The procedure to enable vncserver and startup automatically upon server reboot has been changed in Red Hat compatible linux operating systems such as Red Hat Linux 7.x, Oracle Enterprise Linux 7.x and CentOS etc. If your operating system has version 6.x, then please follow this article instead.


1) Login as root operating system user.
2) rm -rf  /tmp/.X11-unix/
3) cd  /lib/systemd/system
4) Make a copy of vncserver@.service
5) Edit vncserver@.service and replace <USER>  with the actual operating system user name that owns the vnc service. Leave the remaining lines of the file unmodified.
6) systemctl  daemon-reload
7) systemctl  enable  vncserver@:1.service
8) systemctl  start  vncserver@:1.service
9) Edit /etc/rc.d/rc.local and add the line service iptables restart
10) chmod  +x  /etc/rc.d/rc.local
11) Optionally, sudo su - <USER>  and then execute the vncpasswd command to change the vncserver password.
12) Reboot the server.

If the vncserver program is still not getting started automatically, then add the below lines directly in the /etc/rc.d/rc.local file.

rm -rf  /tmp/.X11-unix/
systemctl  daemon-reload
systemctl  enable  vncserver@:1.service
systemctl  start  vncserver@:1.service
service iptables restart


1) Launch TigerVNC Viewer
2) IP address:5901 

It should prompt for Password and then it should connect successfully

Related Posts Plugin for WordPress, Blogger...