Which background process does Automatic Shared Memory Management use to coordinate the sizing of memory components？（）

A.You performed rollback after commit.
B.If a log switch occurs in your database.
C.Thearchiverfails to generate an archived log file.
D.Instance recovery fails to find one of the redo log files.
E.A long-running query is unable to get read-consistent image.
F.If you perform manual undo management operations in auto mode.

A.Start the instance and open the database, instance recovery automatically recovers control files 
B.Create a file based on the contents of the trace file and save it to the control file locations and start the database 
C.Re-create the database (The recovery of the control file is not possible because you have lost all the control files.) 
D.Start the instance, in the NOMOUNTstate,re-create the control file using the CREATE CONTROLFILE command stored in the trace file. 
E.Start the instance and MOUNT the database, then re-create the control file using the CREATE CONTROLFILE command stored in the trace file.

A.Enable instance failover
B.Configure shared server
C.Enable database failover
D.Enable connect-time failover
E.Enable Transparent Application Failover （TAF）