How To Export-Import Database in Oracle 11g(Application Express Edition)? I am beginner in Oracle 11g. I have created a database in oracle 11g(Application Express).

I want to export this database with all data(whole workspace) and import this to another computer where I already have installed Oracle.Is there any way to export-import the whole workspace in oracle 11g application express?
You have lots of different options for doing this:

http://docs.oracle.com/cd/B25329_01/doc/admin.102/b25107/impexp.htm

I would recommend using Oracle Datapump as this is the most powerful solution, and would represent the best opportunity for instruction on how this is done in an enterprise environment.