VNC server configuration -sri

VNC server configuration: steps : from racsinfotech $vncserver Edit /home/username/.vnc/xstartup script as #!/bin/sh # Uncomment the following two lines for normal desktop: unset SESSION_MANAGER exec /etc/X11/xinit/xinitrc [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources xsetroot -solid grey vncconfig -iconic & xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" & twm & to kill the vnc vncserver -kill :1 vncserver By executing vncserver for the second time or execute the vncserver :2 command, this will startup VNC server that bind and listen to port 5802, 5902, and 6002 respectively. To connect to Linux VNC server over HTTP protocol, just type walkernews.net:5801 (replace walkernews.net with your VNC server IP/hostname) at any javascripts-enabled web browser, such as Mozilla Firefox, Opera, or Internet Explorer. To connect to Linux VNC server over RFB protocol, just type walkernews.net:5901 at the VNC client. Concurrent users in a instance Calculate number of concurrent users of an existing instance The view v$license keeps track of concurrent sessions and users. SQL> desc v$license Name Null? Type ----------------------------------------- -------- ---------------- SESSIONS_MAX NUMBER SESSIONS_WARNING NUMBER SESSIONS_CURRENT NUMBER SESSIONS_HIGHWATER NUMBER USERS_MAX NUMBER CPU_COUNT_CURRENT NUMBER CPU_CORE_COUNT_CURRENT NUMBER CPU_SOCKET_COUNT_CURRENT NUMBER CPU_COUNT_HIGHWATER NUMBER CPU_CORE_COUNT_HIGHWATER NUMBER CPU_SOCKET_COUNT_HIGHWATER NUMBER select sessions_current from v$license; The above query will give you the number of concurrent users right now. You can write a small job which will capture this information every hour for a week. Once you have this data, you can take an average of this data to get the number of concurrent users. select SESSIONS_CURRENT,SESSIONS_HIGHWATER,CPU_COUNT_CURRENT,CPU_COUNT_HIGHWATER from v$license; ================= Useful Command for VNC Below are some useful command for VNC server 1. Start a vncserver Command : vncserver You will prompted to provided the password. 2. Changing the password for VNC Command: vncpasswd : n (e.g. vncpasswd : 1) n- The port on which the vnc is running. 3. Killing a VNC server Command: vncserver -kill :n (e.g. vncserver -kill :n) n- The port on which the vnc is running. As a good practice we should use above command to clear vnc server. Killing a OS level process will not release the lock on the vnc port which was used previously for running vnc . So next time we will not be able to start on that locked vnc port. Thanks Srini