Concurrent Requests is getting failed

After installing Application EBS R12 on OS AIX 6.1 and  where Display is  localhost:1.0.Unfortunately,all the concurrent requests are getting failed with error:

REP-0004: Warning: Unable to open user preference file.

REP-3000: Internal error starting Oracle Toolkit.

REP-3000: Internal error starting Oracle Toolkit.

REP-0069: Internal error

REP-57054: In-process job terminated:Terminated with error:

REP-3000: Internal error starting Oracle Toolkit.

Solution:

On Application Node Check the filesets which we had installed

lslpp -l OpenGL.OpenGL_X.dev.vfb

lslpp -l X11.vfb

lslpp -l X11.samples.apps.clients

If one of the above filesets is missing then,

Install the following filesets:

•                 OpenGL.OpenGL_X.dev.vfb

•                 X11.vfb

•                 X11.samples.apps.clients

Take a backup of inittab file & add following lines to it

xserver:2:respawn:/usr/bin/X11/X -force -vfb :1 > /dev/null

startX:2:once:/etc/rc.startX > /dev/console 2>&1

create rc.startX file in /etc if it is not there,change its permission to

774 & add these two line to this file

#!/usr/bin/ksh

/usr/bin/X11/mwm -display :1

Restart the server

Ask the application administrator to add following lines in his application

profile

export DISPLAY=localhost:1.0

xhost +