A transaction commits as soon as its commit log record is written to stable storage at the primary site. This is
A. One Safe
B. Two Safe
C. Two-very Safe
D. Very Safe
Answer:A
A transaction commits as soon as its commit log record is written to stable storage at the primary site. This is
A. One Safe B. Two Safe C. Two-very Safe D. Very Safe
Explanation: The problem with this scheme is that the updates of a committed transaction may not have made it to the backup site, when the backup site takes over processing.