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本帖最后由 jiawang 于 2020-11-12 13:42 编辑
RMAN> report schema;
using target database control file instead of recovery catalog
Report of database schema for database with db_unique_name ORAL
List of Permanent Datafiles
===========================
File Size(MB) Tablespace RB segs Datafile Name
---- -------- -------------------- ------- ------------------------
1 710 SYSTEM *** +DATA/oral/datafile/system.287.890652577
2 570 SYSAUX *** +DATA/oral/datafile/sysaux.286.890652577
3 110 UNDOTBS1 *** +DATA/oral/datafile/undotbs1.289.890652609
4 5 USERS *** +DATA/oral/datafile/users.291.890652625
5 313 EXAMPLE *** +DATA/oral/datafile/example.285.890652577
6 1000 TBS_EPORT *** +DATA/oral/datafile/tbs_eport.288.890652577
List of Temporary Files
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File Size(MB) Tablespace Maxsize(MB) Tempfile Name
---- -------- -------------------- ----------- --------------------
1 100 TEMP 32767 +DATA/oral/tempfile/temp.295.890661063
RMAN> backup as copy datafile 4 format '+FRA';
Starting backup at 17-SEP-20
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=68 device type=DISK
channel ORA_DISK_1: starting datafile copy
input datafile file number=00004 name=+DATA/oral/datafile/users.291.890652625
output file name=+FRA/oral/datafile/users.1353.890664349 tag=TAG20150917T144548 RECID=15 STAMP=890664348
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
Finished backup at 17-SEP-20
RMAN> sql "alter database datafile 4 offline";
sql statement: alter database datafile 4 offline
RMAN> switch datafile 4 to copy;
datafile 4 switched to datafile copy "+FRA/oral/datafile/users.1353.890664349"
RMAN> recover datafile '+FRA/oral/datafile/users.1353.890664349';
Starting recover at 17-SEP-20
using channel ORA_DISK_1
starting media recovery
media recovery complete, elapsed time: 00:00:00
Finished recover at 17-SEP-20
RMAN> sql "alter database datafile ''+FRA/oral/datafile/users.1353.890664349'' online";
sql statement: alter database datafile ''+FRA/oral/datafile/users.1353.890664349'' online
RMAN> delete datafilecopy '+DATA/oral/datafile/users.1353.890664349';
released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=68 device type=DISK
List of Datafile Copies
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Key File S Completion Time Ckp SCN Ckp Time
------- ---- - --------------- ---------- ---------------
17 4 A 17-SEP-15 1109393 17-SEP-20
Name: +DATA/oral/datafile/users.1353.890664349
Tag: TAG20150917T144548
Do you really want to delete the above objects (enter YES or NO)? yes
deleted datafile copy
datafile copy file name=+DATA/oral/datafile/users.1353.890664349 RECID=17 STAMP=890666534
Deleted 1 objects
RMAN>
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