If I understand you rightly you can't run gen.bat. (Is that right?)
I install clearly SP20 (without any liters as SP20_?).
Theese example of my gen.bat . My generator isn't JAS server.
I install Websphere 3.5 on oracle.
I Install Websphere (custom setup: nothing except JDK) on generator. (I know later that can only copy directory with JDK to generator machine).
I do all steps as described in JDE documentation (september release) for new installation SP20 JAS.
A simpe path is generation via direct connection to database.
check that all files enumerated in GEN_CLASSPATH must exist on its paths (by example OWResource.jar ahs path "\." , but exits on the path WEB-INF\lib\OWResource.jar).
I use generation via JAS server - it needs less memory.
For Generation memory (RAM) needs:
direct connect 700 and more
via JAS server 500 and more
Bu process of generation is unstable. I do generation firstly Core objects, then All Objects --> Applications, then All Objects --> Reports etc.
====================================================
@echo off
lease change to your Java SDK1.2.2 (IBM or SUN only) location on your machine
:set JDK122=C:\jdk1.2.2
set JDK122=E:\WebSphere\AppServer\jdk
lease change for your 'local jas.ini' directory on your machine ( ONLY REQUIRED FOR >>Direct Generation<<)
:set JAS_INI=C:\B7\internet\dist\jas
:set JAS_INI=E:\b7\Generator\WEB-INF
lease choose the appropriate Database Drivers ( ONLY REQUIRED FOR >>Direct Generation<<)
:AS400 jt400.jar
:SQLServer7 weblogic.zip
:Oracle classes12.jar
:UDB db2java.zip
:SQLServer2000 msbase.jar;msutil.jar;mssqlserver.jar
:set DBDRIVERS=jt400.jar;weblogic.zip;classes12.zip;db2java.zip;msbase.jar;msutil.jar;mssqlserver.jar
set DBDRIVERS=E:\b7\Generator\WEB-INF\lib\classes12.zip
lease DO NOT modify GEN_CLASSPATH section!!!
lease set classpath to the required Files
set GEN_CLASSPATH=WEB-INF\classes;WEB-INF\lib\images.jar;WEB-INF\lib\xalan.jar;WEB-INF\lib\xerces.jar;WEB-INF\lib\OWResource.jar;%DBDRIVERS%
echo Starting Generator with :
%JDK122%\bin\java -version
%JDK122%\bin\java -ms128m -mx512m -Ddefault_path=%JAS_INI% -classpath %GEN_CLASSPATH% com.jdedwards.runtime.generator.Generator
goto check
:check
if errorlevel 1 goto error
goto end
:error
Echo Error!!!
pause
:end