RMAN restore fails with ORA-01180: can not create datafile 1 (文档 ID 1265151.1)

发布时间：2020-08-10 22:23:04 来源：ITPUB博客阅读：228 作者：season0891 栏目：关系型数据库

In this Document

Symptoms

Cause

Solution

APPLIES TO:

Oracle Database - Enterprise Edition - Version 9.2.0.1 and later
Information in this document applies to any platform.
***Checked for relevance on 16-Apr-2014***

SYMPTOMS

RMAN restore fails with errors like the following:

creating datafile fno=1 name=/u01/system01.dbf
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 01/01/2010 00:00:01
ORA-01180: can not create datafile 1
ORA-01110: data file 1: '/u01/system01.dbf'

This error can happen for any datafiles. However, it is a major concern if it is datafile 1. Datafile 1 is the system datafile. It cannot be CREATED during an RMAN restore. It must RESTORED from a backup. Therefore we must look to see why it cannot be restored in the first place.

Often the error is not a problem with RMAN unable to write to the destination drive as one might think by looking at the error message "can not create datafile 1".

CAUSE

There are no backups available for use

The current incarnation is not set correctly

SOLUTION

Check the database's incarnation and observe the backup time. Do you have available backups to use? Is the incarnation set correctly?

Confirm that the incarnation and backup:

RMAN> list incarnation of database;
RMAN> list backup of datafile 1;
RMAN> list copy of datafile 1;
RMAN> list backup summary;

1) Are the backups available for use?

Instead the error is lack of backup (level 0, full or copy) of the datafile. If the backup is in status EXPIRED, then run crosscheck on the backup set key to see if it still exists:

RMAN> crosscheck backupset 138;

If found, the status will be updated to AVAILABLE.
If the status is still EXPIRED after running crosscheck then the backup you need no longer physically exists.

2) Check the CURRENT Incarnation

If a backup is Available for use, but the restore still fails, then check the incarnation. Has it been set correctly?

Consider the following:

RMAN> list backup of datafile 1;

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

BS Key Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------------
138     Full    531.25M    DISK        00:00:00     13 FEB 2015 14:31:35
        BP Key: 136   Status: AVAILABLE Compressed: NO Tag: TAG20150213T143135
        Piece Name: /opt/app/oracle/fra/ORA102/backupset/2015_02_13/o1_mf_nnndf_TAG20150213T143135_bftw0r14_.bkp
List of Datafiles in backup set 138
File LV Type Ckp SCN    Ckp Time             Name
---- -- ---- ---------- -------------------- ----
1       Full 25207062   13 FEB 2015 14:31:35 /opt/app/oracle/oradata/ORA102/system01.dbf

BS Key Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------------
139     Full    531.32M    DISK        00:00:00     13 FEB 2015 14:09:34
        BP Key: 137   Status: AVAILABLE Compressed: NO Tag: TAG20150213T140934
        Piece Name: /opt/app/oracle/fra/ORA102/backupset/2015_02_13/o1_mf_nnndf_TAG20150213T140934_bfttqhh7_.bkp
List of Datafiles in backup set 139
File LV Type Ckp SCN    Ckp Time             Name
---- -- ---- ---------- -------------------- ----
1       Full 25206825   13 FEB 2015 14:09:34 /opt/app/oracle/oradata/ORA102/system01.dbf

RMAN> list incarnation of database;

List of Database Incarnations
DB Key Inc Key DB Name DB ID            STATUS Reset SCN Reset Time
------- ------- -------- ---------------- --- ---------- ----------
1       1       ORA102   400119926        CURRENT 1          19 MAR 2012 15:29:58
2       2       ORA102   400119926        ORPHAN 5766931    04 OCT 2012 15:37:51
3       3       ORA102   400119926        ORPHAN 5768164    16 OCT 2012 15:33:09
...
9       9       ORA102   400119926        ORPHAN 25204629   13 FEB 2015 13:03:55
10      10      ORA102   400119926        ORPHAN 25205038   13 FEB 2015 13:35:57
11      11      ORA102   400119926        ORPHAN 25206695   13 FEB 2015 14:09:07
13      13      ORA102   400119926        ORPHAN 25206882   13 FEB 2015 14:16:24
14      14      ORA102   400119926        ORPHAN 25206882   13 FEB 2015 14:43:32
12      12      ORA102   400119926        ORPHAN 25206883   13 FEB 2015 14:30:54

To restore backup tag taken on 13 FEB 2015 14:09:34, (TAG20150213T140934), you must reset the incarnation to 11 before performing the the restore.

RMAN> reset database to incarnation 11;

向AI问一下细节

RMAN restore fails with ORA-01180: can not create datafile 1 (文档 ID 1265151.1)

APPLIES TO:

SYMPTOMS

CAUSE

SOLUTION

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