Are IBatis dynamic queries cached on the server side?

[Roberto Dorich]

I assume you use Preparedstatments querying the DB.  As I understand from my DBA, it is important to cache these prepared statments to make Oracle faster.  Could you let me know if IBatis caches these?
        1.  static (i.e. simple SQL queries)
        2.  dynamic (i.e. queries that get modified with isEqual, etc

If so, where is it documented?

Thank you,

- Roberto