You administer an online transaction processing (OLTP) system whose database is stored in Automatic
Storage Management (ASM) and whose disk group use normal redundancy.
One of the ASM disks goes offline, and is then dropped because it was not brought online before DISK_REPAIR_TIME elapsed.
When the disk is replaced and added back to the disk group, the ensuing rebalance operation is too slow.
Which two recommendations should you make to speed up the rebalance operation if this type of failure
happens again?（）

A. ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from the root
B. ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from a pdb
C. ALTER PLUGGABLE DATABASE PDB OPEN issued from the seed
D. ALTER DATABASE PDB OPEN issued from the root
E. ALTER DATABASE OPEN issued from that pdb 
F. ALTER PLUGGABLE DATABASE PDB OPEN issued from another pdb
G. ALTER PLUGGABLE DATABASE OPEN issued from that pdb

A. It will permit the use of uppercase passwords for database users who have been granted the SYSOPER role.
B. It contains username and passwords of database users who are members of the OSOPER operating system group.
C. It contains usernames and passwords of database users who are members of the OSDBA operating system group.
D. It will permit the use of lowercase passwords for database users who have granted the SYSDBA role.
E. It will not permit the use of mixed case passwords for the database users who have been granted the SYSDBA role.

A. It results in an error because these parameter settings are invalid.
B. One 64G flash cache file will be used.
C. Two 64G flash cache files will be used.
D. Two 32G flash cache files will be used.