多选题Which three attributes of the LOG_ARCHIVE_DEST_n initialization parameter control the data availability mode of a Data Guard standby database？ （）ASYNC or ASYNC to identify the network transmission mode.BLGWR or ARCH to identify the primary database pro
题目
多选题
Which three attributes of the LOG_ARCHIVE_DEST_n initialization parameter control the data availability mode of a Data Guard standby database？ （）
A
SYNC or ASYNC to identify the network transmission mode.
B
LGWR or ARCH to identify the primary database process responsible for sending redo information to the standby.
C
AFFIRM or NOAFFIRM to control whether log archiving disk write operations are to be performed synchronously or asynchronously.
D
PROTECTED or UNPROTECTED to control the degree of divergence and data loss at the standby database.