Oracle Database Discussions

Hi guys, am a developer but needs some help on oracle 10g database. In microsoft sql server, there is tool called database profiler that enable you view all commands that are run on the database. this tool is very useful cos it enables u view your sql statements, variables and values. Is there such tool in oracle?

2. Is there a tool I can use to check or confirm whether my oracle 10g database is being replicated on another server?

Guys, prompt response to my questions will be of great help to me

Thanks
Jideofor