Installing Xvfb on Z/OS for SAP

[Former Member]

Hi,

Can anybody tell me the command to install and configure Xvfb for Z/os on SAP.

Actually we are trying to develop some java application for which Xvfb need to be installed on Linux box and we have Z/Os linux mainfram.

I have already downloaded the RPM and extraced under /usr/bin

now whn i say "install Xvfb" it gives error like cannot execute binary file.

Can anybody give me details, how can i go for this ???

Regards

[markus_doehr2 · Accepted solution]

> I have already downloaded the RPM and extraced under /usr/bin

> now whn i say "install Xvfb" it gives error like cannot execute binary file.

rpm files are usually installed using "rpm -i <filename>.rpm".

Markus

[Former Member · Accepted solution]

Hi,

Even after RPM -i i was not able to start Xvfb.

Then I downloaded it from site, unziped and got Xvfb. As per the nites I need to type command like ./extract -C Xvfb but it says no file or folder ./extract then I tried to install Xvfb or simple Xvfb it says unable to ececute binary.

[markus_doehr2 · Accepted solution]

> Then I downloaded it from site, unziped and got Xvfb. As per the nites I need to type command like ./extract -C Xvfb but it says no file or folder ./extract then I tried to install Xvfb or simple Xvfb it says unable to ececute binary

are you sure you downloaded the binary for the correct platform?

What's the output of

file `which Xvfb`

Markus

[Former Member · Accepted solution]

the output is as -

/usr/X11R6/bin # file which Xvfb

which: cannot open `which' (No such file or directory)

Xvfb: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.2.5, dynamically linked (uses shared libs), for GNU/Linux 2.2.5, not stripped

[markus_doehr2 · Accepted solution]

> /usr/X11R6/bin # file which Xvfb

> which: cannot open `which' (No such file or directory)

> Xvfb: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.2.5, dynamically linked (uses shared libs), for GNU/Linux 2.2.5, not stripped

This explains the problem clearly.

You're trying to execute an Intel 32bit binary on a zLinux (S390x) host. This can't work.

The RPM must be build for the platform that you see when you execute

uname -i

Markus

[Former Member · Accepted solution]

Plz chk this -

:/usr/X11R6/bin # file Xvfb

Xvfb: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.2.5, dynamically linked (uses shared libs), for GNU/Linux 2.2.5, not stripped

:/usr/X11R6/bin # ls -l

total 3475

-rwxrwxrwx 1 root root 3507872 Jan 20 2002 Xvfb

lrwxrwxrwx 1 root root 7 Aug 14 2009 sux -> /bin/su

-rwxr-xr-x 1 root root 41784 Apr 22 2008 xauth

/usr/X11R6/bin # echo $shell

:/usr/X11R6/bin # id

uid=0(root) gid=0(root) groups=0(root),1000(sapinst)

/usr/X11R6/bin # uname -a

Linux sp1as1 2.6.16.60-0.21-default #1 SMP Tue May 6 12:41:02 UTC 2008 s390x s390x s390x GNU/Linu

[markus_doehr2 · Accepted solution]

You see the difference between:

Xvfb: ELF 32-bit LSB executable, Intel 80386

and

Linux sp1as1 2.6.16.60-0.21-default #1 SMP Tue May 6 12:41:02 UTC 2008 *s390x s390x s390x* GNU/Linux

?

You need to download Xvfb for the proper architecture/processor which is in your case s390x - not for Intel.

Markus

[Former Member · Accepted solution]

can i download it frm this site -

http://www.linuxbase.org/download/

[markus_doehr2 · Accepted solution]

Any reason why you don't use the official packages provided by your vendor (Novell/suse)?

Markus

[Former Member · Accepted solution]

Im trying onthis site -

http://en.opensuse.org/

is it right or is ther any other site fr this ???

plz guide

[markus_doehr2 · Accepted solution]

Do the following:

- open yast2 (as user 'root')

- Select Software - *Online Update Configuration *

- register your system @ Novell

- after the use in yast2 "Software management" to download the correct package

Markus

[Former Member · Accepted solution]

its giving belwo result -

YaST @ sp1as1 Press F1 for Help

[Filterv] [Actionsv] [Informationv] [Etc.v]

┌───────────────────────────────────────────────────────────────────────────────────────────────┐

│ │Name │Summary│Kind│Version │

│ │No patches available │

│ │

│ │

│ │

│ │

│ │

│ │

└───────────────────────────────────────────────────────────────────────────────────────────────┘

Filter: Installable Patches Total Download Size: 0 B

┌───────────────────────────────────────────────────────────────────────────────────────────────┐

│ │

│ │

│ │

│ │

│ │

│ │

└───────────────────────────────────────────────────────────────────────────────────────────────┘

[Help] [Cancel] [OK]

[markus_doehr2 · Accepted solution]

> its giving belwo result -

Seems your system is not properly registered @ novell. Did you enter an activation number?

Markus

[Former Member · Accepted solution]

I thinkk yes its registed properly.

Is there any other site where i can download it from and install without any problem ???

Regards

[markus_doehr2 · Accepted solution]

> Is there any other site where i can download it from and install without any problem ???

According to what I found on the Novell site, the Xvfb is part of the Xfree/Xorg package and is available on the first installation DVD.

(For SLES 10 SP2 it's https://secure-www.novell.com/products/linuxpackages/server10/sp2/s390x/xorg-x11-xvfb.html, you seem to run SLES11.)

Check your DVDs.

Markus

[Former Member · Accepted solution]

Hi ,

some how i installed xvfb. plz see belwo -

:/var/lib/rpm # rpm -qa | grep xvf

lsb-xvfb-1.2.0-2

now whn i run ps -ef | grep xvb

i dont get any service runnning

[markus_doehr2 · Accepted solution]

> lsb-xvfb-1.2.0-2

You seem to have

- install an ancient version (lsb-xvfb is from 2005) on a brand new operating system (SuSE SLES 11 for z/OS)

--> it's clear that it doesn't work

I can just again suggest to check the source DVDs from where you installed, the file you need is there on the DVDs - or contact Novell if you don't find it.

Avoid installing random packages that are found by google. They are not going to work.

Markus

[Former Member · Accepted solution]

how do we start and stop Xvfb on linux box ???

and chk Xvfb status ???

[Former Member · Accepted solution]

Now whn i say

ps -ef | grep X11

it shows the X11 is running .

but whn I say

ps -ef | grep Xvfb

it shows no process running.

Will it be ok or Xvbf also need to be running too ????

[markus_doehr2 · Accepted solution]

> Will it be ok or Xvbf also need to be running too ????

Xvfb is used to emulate a framebuffer/screen. If X can be started there's not need to use Xvfb.

Markus

[Former Member · Accepted solution]

Full marks to you Markus.....I hope to giv you point more thn 10 if possible !!!

Many Thanks & Regards