I've been meaning to take my OCP exams for ages, but unfortunately I'm a bit lazy, and don't really feel like studying about Oracle after I get home each evening (usually sick of it after a days work!!).

I've got the Certified DBA Exam guide, and the exam cram books and about 3 1/2 yrs experience. I was going to book the exams myself at my own pace (a very slow one!) - but now, my company has offered to pay for them, but only if I book them all at once (so they only have to raise one purchase order!).

So from your experiences, roughly how long should I give between exams to study for the next?