Hi
I have gone through the link. also through the oracle certification program candidate guide. in that they have mentioned the track like this

Exam#1Z0-001 OR Exam#1Z0-007-->Exam#1Z0-031--> OCA -->Exam# 1Z0-032-->Exam# 1Z0-033--> OCP

or you could follow the link http://www.oracle.com/education/downloads/dba9i_cg.pdf

what does this OR means.