Wow! Do you really think DBA work is the easy option? I've been doing this stuff for 12 years and there is still so much to learn!
The term DBA means something different in every company. In some places, all the DBA does is create tables and indexes and process change requests. If that's the type of DBA you mean, then yes, it's really simple.
In other companies, the term DBA is used to describe someone who is an Oracle expert, with great DBA, design and development skills. This is what you should be aiming for.
If you do want to become a DBA, the OCP stuff will help, but as I said before, passing the OCP will not make you a good DBA. It's just the start of a lot of hard work.
Logical thinking... DBA work requires just as much logical thinking as development. I've done and still do both. Problem solving is just as big a thing in DBA work as it is in development work. Also, good DBAs invariably do some programming.
Pressure. Do you honestly believe that DBA work is low pressure? When you are trying to recover your production system from a backup and failure will result in millions of pounds of loss to the company, that's pressure.
If your goal is to have a job with no logical thinking, I think you need to move out of IT completely. I can't think of a single IT job that doesn't require logical thought and problem solving.