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
****此处如果出现有关连TNS错误，则将listener.ora加上一个连接串
SID_LIST_LISTENER =
? (SID_LIST =
??? (SID_DESC =
????? (SID_NAME = PLSExtProc)
????? (ORACLE_HOME = /home/lc_orauser/app)
????? (PROGRAM = extproc)
??? )
??? (SID_DESC =
????? (GLOBAL_DBNAME = ORCL)
????? (ORACLE_HOME = /home/lc_orauser/app)
????? (SID_NAME = ORCL)
??? )
?? )
4、如果3成功后，则：
RMAN> create catalog tablespace? rmants;
?
recovery catalog created
5、在target库中注册catalog库
RMAN> register database;
database registered in recovery catalog
starting full resync of recovery catalog
full resync complete
?