3.创建KEYSTORE文件
sql>nister key management
create keystore '/u01/app/oracle/admin/orcl/wallet' identified by oracle_4U;
4.打开KEYSTORE文件
sql>nister key management
set keystore open identified by oracle_4U;
5.创建master 加密key
sql>administer key management
set key identified by oracle_4U
with backup using 'for_sztech';
6.打开加密备份
rman>configure encryption for database on;
7.执行透明加密备份
rman>backup tablespace users;