The Oracle 9i db installer fails when the DISPLAY host is a Solaris 9 box.
Here's the setup:
The Oracle software is on machine A (Solaris 8U5).
Set DISPLAY to machine B (Solaris 9, bld 44).
Start runInstaller on machine A (calls JRE 1.1.8, bundled with Oracle 9i).
Installer GUI is displayed on machine B.
Click on Exit button of GUI (enough to show the problem).
Installer goes into infinite loop (see trace file).
Stop the installer on machine A by killing the JRE process.

Setting DISPLAY to a Solaris 8 machine behaves normally, i.e., the GUI exits,
the install works.

I've generated two traces with truss, one for the S8 install and the other
for the S9.

To reproduce the problem log on to machine 'minya' as user oracle with
password oraminya. Set DISPLAY to a machine running S9 and run
/ora1/oradbsrc/oracle9/vol1/runInstaller. A truss output will be sent to
the screen. Let me know if you need any truss flags enabled or anything
else.

###@###.### 2001-09-04
More info. Oracle 9i bundles JRE 1.1.8.12.0 with its installer and uses it
to execute the installer classes. The jre gets copied over from the CD 1
stage area to /tmp/OraInstall/jre whereupon the jre executes the installer.
Attemptintg to install Oracle 9i on a Solaris 9 box will result on the splash
window and the welcome dialog to be displayed, but clicking on any of the GUI
buttons sends the installer into an endless wait (see att. s9_direct.trace).
The bottom line is that Oracle 9i cannot be installed on a Solaris 9 box
directly or if the S9 box is used to DISPLAY the installer. Installing on
an S9 box succeeds only if the installer is DISPLAYed on an S8 box.