Resolving RMAN-06023 or RMAN-06025 (Doc ID 2038119.1)

Posted 2020-11-24 zylong-sys

Resolving RMAN-06023 or RMAN-06025 (Doc ID 2038119.1)

APPLIES TO:

Oracle Database - Enterprise Edition - Version 9.0.1.0 to 12.1.0.2 [Release 9.0.1 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.

SYMPTOMS

You are receiving error:

RMAN-06025: no backup of archived log for thread 1 with sequence 19684 and starting SCN of 1483914453 found to restore

OR

RMAN-06023: no backup or copy of datafile 4 found to restore

CAUSE

These errors are returned by RMAN when it is unable to identify a backup of either an archivelog file (RMAN-06025) or datafile (RMAN-06023)

当RMAN无法识别归档日志文件(RMAN-06025) 或数据文件 (RMAN-06023) 的备份时，这些错误将由RMAN返回

SOLUTION

1.  Connected with RMAN to the instance in which you are running the restore (or the target when running an RMAN duplicate) and issue:

    使用RMAN连接到您正在其中运行还原的实例（或运行 RMAN duplicate 时的 target ）并发出：

For RMAN-06025: no backup of archived log....... 

RMAN>  list backup of archivelog sequence <sequence# returned by error>;

For example:

RMAN>  list backup of archivelog sequence 19684;

For RMAN-06023: no backup or copy of datafile ......

RMAN>  list backup of datafile <number returned by the error>;

For example:

RMAN>  list backup of datafile 4;

2.  If no backups are returned:  如果没有返回备份

a.  Check if the you should be connecting to a catalog.  检查您是否应该连接到catalog

b.  If no catalog is used, you may need to catalog the backups contining the file (archivelog or datafile).  To do this, execute:

    如果未使用 catalog，则可能需要对备份文件(archivelog or datafile)的备份进行 catalog。为此，执行

RMAN>  catalog start with ‘/location of backup/‘ noprompt;

If backups are on tape, see:  如果备份在磁带上，请参阅

Note 550082.1 How to Catalog Tape Backup Pieces

c.  Consider restoring a controlfile which contains the backup information. 考虑还原包含备份信息的控制文件

3.  If RMAN returns backup information:  如果RMAN返回备份信息

a.  Check that the backup‘s status is available.    检查备份状态是否可用

For example:

RMAN> list backup of datafile 4;

List of Backup Sets
===================

BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
291 Full 1.06G DISK 00:00:15 27-JUL-15
BP Key: 292 Status: AVAILABLE Compressed: NO Tag: TAG20150727T144532
Piece Name: <backuppiece path</<backuppiece name>

b.  for datafiles, check that the datafile‘s Ckp SCN/Ckp Time in the backup is before the until specified by the restore/duplicate:

    对于数据文件，请检查备份中数据文件的 Ckp SCN/Ckp Time 是否早于 restore/duplicate 指定的时间

For example:

RMAN> list backup of datafile 4;

List of Backup Sets
===================

BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------------
291 Full 1.06G DISK 00:00:15 27-JUL-2015 14:45:47
BP Key: 292 Status: AVAILABLE Compressed: NO Tag: TAG20150727T144532
Piece Name: <backuppiece path</<backuppiece name>
List of Datafiles in backup set 291


File LV Type Ckp SCN Ckp Time Name
---- -- ---- ---------- -------------------- ----
4 Full 59195530 27-JUL-2015 14:45:32 <db file path>/<db file name>

c.  check that the backup you expect to be used is within the CURRENT incarnation.

    检查您希望使用的备份是否在当前版本中

For example:

RMAN> list incarnation;

using target database control file instead of recovery catalog

List of Database Incarnations
DB Key Inc Key DB Name DB ID STATUS Reset SCN Reset Time
------- ------- -------- ---------------- --- ---------- ----------
1 1 <db name> 82280094 PARENT 1 19-JUN-2015 10:31:58
2 2 <db name> 82280094 CURRENT 59448598 29-JUL-2015 12:45:27

In this case, we clearly see that the backup from 27-JUL-2015 was not taken in the CURRENT incarnation, Reset Time=29-JUL-2015.  To restore the backup of datafile 4, the incarnation must be reset.

在这种情况下，我们清楚地看到从2015年7月27日开始的备份未包含在当前版本中，重置时间 = 2015年7月29日。要恢复数据文件4的备份，必须重置 incarnation

For example:

RMAN> reset database to incarnation 1;

database reset to incarnation 1

RMAN> list incarnation;

List of Database Incarnations
DB Key Inc Key DB Name DB ID STATUS Reset SCN Reset Time
------- ------- -------- ---------------- --- ---------- ----------
1 1 <db name> 82280094 CURRENT 1 19-JUN-2015 10:31:58
2 2 <db name> 82280094 ORPHAN 59448598 29-JUL-2015 12:45:27

NOTE:  If you are getting ‘specification does not match any archive log..‘ for archivelog files, this is a bit different.  This error indicates that the controlfile doesn‘t know of an existing archivelog file vs backup.  See Note 869671.1 RMAN List / Delete error with "specification does not match any archive log..."

注意：如果对于存档日志文件，您得到的“规范与任何存档日志都不匹配..”，则有所不同。此错误表明控制文件不知道现有的存档日志文件与备份。请参见 Note 869671.1 RMAN List / Delete error with "specification does not match any archive log..."

REFERENCES

NOTE:869671.1 - RMAN List / Delete error with "specification does not match any archive log..."