1: catalog 数据库上创建表空间：
export Oracle_SID=ORCL

create tablespace rmants datafile '/home/oracle/rman/rmants.ora' size 20M;

注意：这里面表空间名一定不要叫rman，如果叫rman，接下来操作会报错，因为rman是关键字；

2. catalog 数据库上创建用户：

SQL>Create user rman identified by rman default tablespace rmants

????? 2temporary ?tablespace temp quota unlimited on rmants;

SQL>grant recovery_catalog_owner to rman;

本次举例子2个数据库在同一台服务器上。

接下来进入target数据库

1、 [oracle@aoracle admin]$ vi tnsnames.ora

catalog =
????????????? (DESCRIPTION =
????????????????????? (ADDRESS_LIST =
????????????????????? (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.190.140)(PORT = 1521))
?????????????????)
????????????????? (CONNECT_DATA =
?????????????????????????(SID = ORCL)
?????????????????????)
???????????????? )

2、[oracle@aoracle ~]$ tnsping catalog

看是否能连上。

3、在主数据库上：
export ORACLE_SID=niutest
[oracle@aoracle ~]$ rman target / catalog rman/rman@catalog