Oracle 19c中连接RMAN客户端的连接方法

 rman客户端是用于执行backup，restore和recover命令的rman程序。本文介绍几种连接rman客户端的办法，sysbackup是12c开始引入的新的角色，目地在于分离权限，使数据库的权限管理更
加精准化，同时结合新的权限和角色，在日常运维中我们也可以将rman备份用户进行分离，不再像之前版本大多操作通过sys
用户完成。
1、本地连接方式
分别使用sysbakcup角色和操作系统认证方式
[oracle@db19do01 ~]$ export ORACLE_SID=cdb19c
 [oracle@db19do01 ~]$ rman target '"/as sysbackup"'
 Recovery Manager: Release 19.0.0.0.0 - Production on Sat Aug 21 11:46:29 2021
 Version 19.3.0.0.0
 Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.
 connected to target database: CDB19C (DBID=509743990)
 
 
[oracle@db19do01 ~]$ rman target /
 Recovery Manager: Release 19.0.0.0.0 - Production on Sat Aug 21 11:48:42 2021
 Version 19.3.0.0.0
 Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.
 connected to target database: CDB19C (DBID=509743990)
 RMAN>
通过创建一个用户授予sysbackup角色进行连接
创建备份用户，这里我们创建一个公共用户 c##backupuser 
SYS@cdb19c >create user c##backupuser identified by Oracle_123;
 User created.
 SYS@cdb19c >grant sysbackup to  c##backupuser;
 Grant succeeded.
 SYS@cdb19c >
 [oracle@db19do01 ~]$ rman target c##backupuser/Oracle_123
 Recovery Manager: Release 19.0.0.0.0 - Production on Sat Aug 21 11:51:30 2021
 Version 19.3.0.0.0
 Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.
 connected to target database: CDB19C (DBID=509743990)
 
[oracle@db19do01 ~]$ rman
 Recovery Manager: Release 19.0.0.0.0 - Production on Sat Aug 21 11:53:30 2021
 Version 19.3.0.0.0
 Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.
 RMAN> connect target c##backupuser/Oracle_123
 connected to target database: CDB19C (DBID=509743990)
 RMAN> exit
 Recovery Manager complete.
 
[oracle@db19do01 ~]$ rman
 Recovery Manager: Release 19.0.0.0.0 - Production on Sat Aug 21 11:53:54 2021
 Version 19.3.0.0.0
 Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.
 RMAN> connect target /
 connected to target database: CDB19C (DBID=509743990)
 RMAN> exit
 [oracle@db19do01 ~]$ rman
 Recovery Manager: Release 19.0.0.0.0 - Production on Sat Aug 21 11:55:28 2021
 Version 19.3.0.0.0
 Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.
 RMAN> connect target '"/ as sybackup"'
 target database Password:
 connected to target database: CDB19C (DBID=509743990)
 RMAN>
 2、远程连接
 通过配置tnsnames.ora文件连接rman客户端，cdb19c的别名是已经配置好的，这里也可以使用easy connect连接
 使用我们创建的c##backupuser备份用户连接
 [oracle@db19do01 ~]$ rman target '"c##backupuser/Oracle_123@cdb19c as sysbackup"'
 Recovery Manager: Release 19.0.0.0.0 - Production on Sat Aug 21 12:53:06 2021
 Version 19.3.0.0.0
 Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.
 connected to target database: CDB19C (DBID=509743990)
 RMAN>
 通过sys用户连接到CDB
 [oracle@db19do01 ~]$ rman target sys/Oracle_123@cdb19c
 Recovery Manager: Release 19.0.0.0.0 - Production on Sat Aug 21 12:53:49 2021
 Version 19.3.0.0.0
 Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.
 connected to target database: CDB19C (DBID=509743990)
 RMAN>
 通过sys用户连接到PDB
 [oracle@db19do01 ~]$ rman target sys/Oracle_123@hrpdb
 Recovery Manager: Release 19.0.0.0.0 - Production on Sat Aug 21 12:54:07 2021
 Version 19.3.0.0.0
 Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.
 connected to target database: CDB19C:HRPDB (DBID=3868540829)
 RMAN>
 -the end-