When installting SAP NetWeaver 7.0 on HP-UX 11.23, the sapinst comes to an halt. A java process "/opt/java1.4/bin/java -classpath /tmp/sapinst_instdir/NW04S/SYSTEMORA/CENTRAL/ASinstall/sharedlib/launcher.jar... uses 100% CPU not not doing anything)
Your JDK is 1.4.2_10
there is a problem in the Java VM 1.4.2_10 that will cause the installation to hang at this stage. It has been reported on Sun Solaris, but not on HP-UX yet. Apparently it affects HP-UX (IA64) too.
So, upgrade to 1.4.2_13 (patch 14,15,16 has know issue with Kerbose authentication). 1.4.2_17 should work too. But don't forget the installation guide tells you Java 5.0 is NOT supported.
OK Good luck.