LGWR - Functions - Oracle Transaction
Q. When a transaction is committed, what does the LGWR do?- Published on 13 Aug 15
a. Writes redo log entries in the SGA's redo log buffers to the online redo log file
b. Writes the transaction's SCN to the online redo log file
c. Both a and b
d. Writes the unique system change number (SCN) to redo log file.
ANSWER: Both a and b