在使用RMAN恢复数据库的时候，报了如下错误：
RMAN> run
2> {allocate channel c1 type disk;
3> allocate channel c2 type disk;
4> allocate channel c3 type disk;
5> allocate channel c4 type disk;
6> restore database;
7> release channel c1;
8> release channel c2;
9> release channel c3;
10> release channel c4;}
released channel: ORA_DISK_1
allocated channel: c1
channel c1: SID=137 device type=DISK
allocated channel: c2
channel c2: SID=12 device type=DISK
allocated channel: c3
channel c3: SID=138 device type=DISK
allocated channel: c4
channel c4: SID=15 device type=DISK
Starting restore at 2019/12/26 09:06:18
Starting implicit crosscheck backup at 2019/12/26 09:06:18
Crosschecked 6 objects
Finished implicit crosscheck backup at 2019/12/26 09:06:51
Starting implicit crosscheck copy at 2019/12/26 09:06:51
Finished implicit crosscheck copy at 2019/12/26 09:06:53
searching for all files in the recovery area
cataloging files...
no files cataloged
released channel: c1
released channel: c2
released channel: c3
released channel: c4
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 12/26/2019 09:07:18
RMAN-06026: some targets not found - aborting restore
RMAN-06023: no backup or copy of datafile 4 found to restore
RMAN-06023: no backup or copy of datafile 3 found to restore
RMAN-06023: no backup or copy of datafile 2 found to restore
RMAN-06023: no backup or copy of datafile 1 found to restore
查看了下1到4的数据文件备份，其实都存在。
RMAN> list backup of datafile 1;
List of Backup Sets
===================
BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ -------------------
5 Full 585.28M DISK 00:01:47 2019/12/23 16:55:57
BP Key: 5 Status: EXPIRED Compressed: NO Tag: TAG20191223T165408
Piece Name: /rman_backup/Full_05uk5k1i_1_1.bak
List of Datafiles in backup set 5
File LV Type Ckp SCN Ckp Time Name
---- -- ---- ---------- ------------------- ----
1 Full 1047397 2019/12/23 16:54:11 +DATA/phydb/datafile/system.256.1027260085
RMAN> list backup of datafile 2;
List of Backup Sets
===================
BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ -------------------
4 Full 376.65M DISK 00:01:33 2019/12/23 16:55:44
BP Key: 4 Status: EXPIRED Compressed: NO Tag: TAG20191223T165408
Piece Name: /rman_backup/Full_06uk5k1j_1_1.bak
List of Datafiles in backup set 4
File LV Type Ckp SCN Ckp Time Name
---- -- ---- ---------- ------------------- ----
2 Full 1047409 2019/12/23 16:54:12 +DATA/phydb/datafile/sysaux.257.1027260091
RMAN> list backup of datafile 3;
List of Backup Sets
===================
BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ -------------------
2 Full 6.55M DISK 00:00:37 2019/12/23 16:54:49
BP Key: 2 Status: EXPIRED Compressed: NO Tag: TAG20191223T165408
Piece Name: /rman_backup/Full_07uk5k1k_1_1.bak
List of Datafiles in backup set 2
File LV Type Ckp SCN Ckp Time Name
---- -- ---- ---------- ------------------- ----
3 Full 1047428 2019/12/23 16:54:14 +DATA/phydb/datafile/undotbs1.258.1027260095
RMAN> list backup of datafile 4;
List of Backup Sets
===================
BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ -------------------
4 Full 376.65M DISK 00:01:33 2019/12/23 16:55:44
BP Key: 4 Status: EXPIRED Compressed: NO Tag: TAG20191223T165408
Piece Name: /rman_backup/Full_06uk5k1j_1_1.bak
List of Datafiles in backup set 4
File LV Type Ckp SCN Ckp Time Name
---- -- ---- ---------- ------------------- ----
4 Full 1047409 2019/12/23 16:54:12 +DATA/phydb/datafile/users.259.1027260095
后面发现是权限问题，把/rman_backup目录下的备份修改成oracle:oinstall用户组就好了。
