management app for oracle

Hi all, this is my first post in this list and I'm a completely newbie with oracle. I have a little experience with php/mysql, but now my university has asked to me to port a database created with mysql in oracle.
So, the question: i'm looking for a tool like phpmyadmin for mysql to manage in a simple way the databases I need to create with oracle. Exists something similar?
Ah, I've installed oracle 10g express version for linux (my server runs Fedora Core 4), so I need something for this system.

Thanks in advance for any reply.

Simone Saravalli

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