i am trying to install oracle 9i on an xp machine that already has 10g installed.
after starting autorun and selecting install the message 'can not find main class' is displayed and autorun closes down.
installing on a machine without 10g works fine.
Sounds like a problem with your CLASSPATH variable. There's a known issue with Oracle 9i Internet Developer Suite when installing on XP Pro systems that already have non-Oracle software. The earlier installation of non-Oracle products may have set CLASSPATH to a value that works for that other installation but is incompatible with 9iDS. Copy the current CLASSPATH variable to a safe place, then delete the env variable, reboot, and install 9iDS. It will re-create CLASSPATH with a supported value.