目前总结了以下几种

首先删除备库的数据文件、控制文件、redo和standby log。

1.传统方式

主库rman全备+备份出备库控制文件 --> 传到备库
备库启动到nomount状态，restore 备份的备库控制文件，启动到mount状态
RMAN> restore database;
RMAN> recover database;

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;
SQL> alter database recover managed standby database cancel;
SQL> alter database open;
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;

2.在线复制 (适合于同机房)

备库启动到nomount状态
# rman target sys/oracle@ocrl auxiliary sys/oracle@dgorcl      (主库在前，备库再后)
RMAN> DUPLICATE TARGET DATABASE FOR STANDBY FROM ACTIVE DATABASE DORECOVER NOFILENAMECHECK;

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;
SQL> alter database recover managed standby database cancel;
SQL> alter database open;
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;

3.备份复制

主库rman全备 --> 传到备库
备库启动到nomount状态
# rman target sys/oracle@ocrl auxiliary sys/oracle@dgorcl (主库在前，备库再后)
RMAN> duplicate target database for standby;
注：主库和备库的备份路径需要一致

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;
SQL> alter database recover managed standby database cancel;
SQL> alter database open;
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;

4.无主库(target)连接和catalog连接

主库rman全备 --> 传到备库
备库启动到nomount状态
# rman auxiliary /
RMAN> duplicate target database for standby nofilenamecheck backup location '/oradata/backup';
注：备份集路径可以与主库不同

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;
SQL> alter database recover managed standby database cancel;
SQL> alter database open;
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;