This is an OCP test question
A checkpoint will do the following:
A. Write data buffers to disk; update the control file and data file headers with new SCN
B. Write data buffers to disk only
C. Update the controlfile and write data buffers to disk
D. Update the controlfile and file headers with new SCN information
Please take time to answer the above question. one of the 4 choices from the above, is right. Which one?
The answer should be (D) Update the controlfile and file headers with new SCN information.
Writing of data buffer to disk is done by DBWn.
The checkpoint background process only updates the controlfile and data file headers.
though write buffer cached data to disk is done by DBWn, it will be done every checkpoint.
So I do not know what the 'checkpoint do ' means.
Hi eastking & oracbase,
I agree with you guys!!
Follow the above thread. you will see this as 20-25 question
from the top. And it says that the answer is A!!
I had my own doubts.. hence i wanted to check with you guys.
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