---

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.

---

出自：Oracle认证

显示答案