Your database is not configured for session failover. Your tnsnames.ora file contains the following details: test.us.oracle.com= (DESCRIPTION= (ADDRESS_LIST= (LOAD_BALANCE=off) (FAILOVER=ON) (ADDRESS= (PROTOCOL=tcp)(HOST=test1-server)(PORT=1521)) (ADDRESS= (PROTOCOL=tcp)(HOST=test2-server)(PORT=1521))) (CONNECT_DATA= (SERVICE_NAME=test.us.oracle.com))) Which feature is enabled in this case?()
A:Load balancing
B:Instance failover
C:Database failover
D:Connect-time failover
E:Transparent Application Failover (TAF)
出自:Oracle认证