Setup for Discoverer to have multiple sessions opening in different browser

What is the setup for Discoverer or Windows 6 browser to have multiple discoverer sessions opening in different browser windows at the same time in Discoverer 10g Plus?
We have implemented Discoverer 10g Plus just to be used as an extract tool. We have some workbooks retrieving 200,000 or more rows from an Oracle database. It is taking 30 to 45 minutes to download. Some users are able to open multiple sessions in different browsers to download more then one worksheet at the time, but we have other users who get an error message that they can only open one session at the time. What is the setup to allow users to open more than one Discoverer session?

Additional research in Metalink found the following:
Hdr: 7261918 10.2 USER_JAV 10.1.2.54.25 PRODID-964 PORTID-46
Abstract: ALLOW ABILITY TO LAUNCH TWO DISCOPLUS SESSIONS FROM SAME BROWSER CONNECTION PAGE
*** 07/17/08 07:31 am REQUEST TEXT ***
Please refer to bug 6656139. Need to get Discoverer Plus certified to
support launching two plus sessions from same browser connections page when
using SUN JRE 1.5/1.6 or higher.
As per bug 6656139 it appears to be JVM 1.5.x limitation, because same
actions work fine when using SUN JRE 1.4.2_xx.
*** 07/17/08 07:31 am BUSINESS NEED ***
Impossible to run reports against two different databases simultaniously
using same Discoverer instace, or just several reports at the same time,
which would save much time instead of running reports one by one.
*** 07/19/09 11:57 pm *** (CHG: Sta->97)
*** 07/19/09 11:57 pm RESPONSE ***
ALSO SEE THIS FROM SUPPORT
Error 'Unable To Connect Discoverer Server: Null' When Opening A Second Plus Session From The Same Browser [ID 790187.1]
Cause
Bug 6656139, JVM 1.5 : RUNNING TWO PLUS SESSIONS ERRORS WITH UNABLE TO CONNECT: NULL
The Java Console reports the following error:
Error: java.lang.StackOverflowError
java.lang.StackOverflowError
at java.awt.DefaultFocusTraversalPolicy.accept(Unknown Source)
at java.awt.ContainerOrderFocusTraversalPolicy.getFirstComponent(Unknown Source)
at java.awt.ContainerOrderFocusTraversalPolicy.getFirstComponent(Unknown Source)
at javax.swing.DefaultFocusManager.getFirstComponent(Unknown Source)
Per Bug 6656139 this problem is a limitation/bug with current Sun JRE 1.5
and higher and needs to be addressed by Sun.
Solution
Currently launching two Discoverer Plus sessions from the same browser connection page is not supported/certified.
Enhancement Request :
Bug 7261918, ALLOW ABILITY TO LAUNCH TWO DISCOPLUS SESSIONS FROM SAME BROWSER CONNECTION PAGE
has been logged for this issue but is still waiting on a Sun Java fix.
Use the following workaround:
Use JRE 1.4.2_xx until the ER is implemented and the SUN JRE bug is fixed.

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