Today I took the 1Z0-060 test and passed it finally.
I did feel great pressure before the test, as I still had so many things to learn until last night. I spent the whole last night to confirm some answers. Some topics were very difficult to find, so I had to read lots of material to get the correct answers.
I should do more exercises about the test, also to master some knowledge deeply.
Anyway, next to the test 1Z0-068: Oracle Database 12c: RAC and Grid Infrastructure Administration, and I will continue to read related documents about the Oracle12c administration.
I hope to complete the 1Z0-068 within 3-4 weeks.