数据库：19.3.0.0
系统：CentOS 7.9
节点1：
SQL> show parameter control
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
control_file_record_keep_time integer 7
control_files string +DATA/ORCL/CONTROLFILE/current
.261.1099351569
control_management_pack_access string DIAGNOSTIC+TUNING
SQL> alter system set control_files='+DATA/ORCL/CONTROLFILE/current.261.1099351569','+OCR/ORCL/CONTROLFILE/control01.ctl' scope=spfile;
System altered.
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 3640654064 bytes
Fixed Size 8902896 bytes
Variable Size 771751936 bytes
Database Buffers 2852126720 bytes
Redo Buffers 7872512 bytes
SQL> show parameter control
NAME TYPE VALUE
------------------------------------ --------------------------------- ------------------------------
control_file_record_keep_time integer 7
control_files string +DATA/ORCL/CONTROLFILE/current
.261.1099351569, +OCR/ORCL/CON
TROLFILE/control01.ctl
control_management_pack_access string DIAGNOSTIC+TUNING
此时关闭节点2数据库，节点1再执行：
[oracle@hisdb1:/home/oracle]$ rman target /
Recovery Manager: Release 19.0.0.0.0 - Production on Tue Mar 15 22:24:35 2022
Version 19.3.0.0.0
Copyright (c) 1982, 2019, Oracle and/or its affiliates. All rights reserved.
connected to target database: ORCL (not mounted)
RMAN> restore controlfile from '+DATA/ORCL/CONTROLFILE/current.261.1099351569';
Starting restore at 15-MAR-22
using channel ORA_DISK_1
channel ORA_DISK_1: copied control file copy
output file name=+DATA/ORCL/CONTROLFILE/current.261.1099351569
output file name=+OCR/ORCL/CONTROLFILE/control01.ctl
Finished restore at 15-MAR-22
RMAN> alter database mount;
released channel: ORA_DISK_1
Statement processed
RMAN> alter database open;
Statement processed
RMAN> select name from v$controlfile;
NAME
--------------------------------------------------------------------------------
+DATA/ORCL/CONTROLFILE/current.261.1099351569
+OCR/ORCL/CONTROLFILE/control01.ctl
