12c rman 出现ORA-00245/RMAN-08132

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BANNER                                                                               CON_ID
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Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production              0
PL/SQL Release 12.1.0.1.0 - Production                                                    0
CORE    12.1.0.1.0      Production                                                                0
TNS for Linux: Version 12.1.0.1.0 - Production                                            0
NLSRTL Version 12.1.0.1.0 - Production                                                    0

12c rac(2 instance on rhel6.1)

12c rman 出现ORA-00245/RMAN-08132

archived log file name=+CRSFRA/TESTDB/ARCHIVELOG/2013_12_25/thread_3_seq_3676.296.835088425 RECID=13 STAMP=835088428
deleted archived log
archived log file name=+CRSFRA/TESTDB/ARCHIVELOG/2013_12_25/thread_3_seq_3677.299.835092695 RECID=15 STAMP=835092697
deleted archived log
archived log file name=+CRSFRA/TESTDB/ARCHIVELOG/2013_12_25/thread_3_seq_3678.300.835092721 RECID=16 STAMP=835092723
Deleted 17 objects

ORA-00245: control file backup failed; target is likely on a local file system

RMAN-08132: WARNING: cannot update recovery area reclaimable file list

####################################################################################
ORA-00245: control file backup failed; target is likely on a local file system
Cause: Failed to create a control file backup because some process signaled an error during backup creation. This is likely caused by the backup target being on a local file system so it could not be accessed by other instances. It can also be caused by other I/O errors to the backup target. Any process of any instance that starts a read/write control file transaction must have access to the backup control file during backup creation.

Action: Check alert files of all instances for further information.
####################################################################################

[oracle@oratest1 ~]$ rman target /

Recovery Manager: Release 12.1.0.1.0 - Production on Thu Dec 26 12:09:52 2013

connected to target database: TESTDB (DBID=2609949231)

RMAN> show all;

using target database control file instead of recovery catalog
RMAN configuration parameters for database with db_unique_name TESTDB are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP ON; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
CONFIGURE RMAN OUTPUT TO KEEP FOR 7 DAYS; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/oracle/db_base/product/12.1.0/dbhome_1/dbs/snapcf_testdb_1.f'; # default

RMAN> CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+CRSFRA/snapcf_testdb.f';

new RMAN configuration parameters:
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+CRSFRA/snapcf_testdb.f';
new RMAN configuration parameters are successfully stored

RMAN> show all;

RMAN configuration parameters for database with db_unique_name TESTDB are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP ON; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
CONFIGURE RMAN OUTPUT TO KEEP FOR 7 DAYS; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+CRSFRA/snapcf_testdb.f';

RMAN> SHOW SNAPSHOT CONTROLFILE NAME;

RMAN configuration parameters for database with db_unique_name TESTDB are:
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+CRSFRA/snapcf_testdb.f';

reference:

1 The snapshot control file is a copy of a database control file created in an operating system-specific location by RMAN. RMAN creates the snapshot control file so that it has a consistent version of a control file to use when either resynchronizing the recovery catalog or backing up the control file.

You can specify a cluster file system or a raw device destination for the location of your snapshot control file. This file is shared across all nodes in the cluster and must be accessible by all nodes in the cluster.

2 ORA-245: In RAC environment from 11.2 onwards Backup Or Snapshot controlfile needs to be in shared location (文档 ID 1472171.1)

Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.1.0 and later
Information in this document applies to any platform.
This issue is only applicable to RAC database.

From 11gR2 onwards, the controlfile backup happens without holding the controlfile enqueue. For non-RAC database, this doesn't change anything. But for RAC database, due to the changes made to the controlfile backup mechanism in 11gR2, any instance in the cluster may write to the snapshot controlfile. Due to this snapshot controlfile need to be visible to all instances.

The snapshot controlfile MUST be accessible by all nodes of a RAC database, if the snapshot controlfile does not reside on a shared device error will be raised at the time of RMAN backup while taking snapshot of controlfile.

This applies to backing up controlfile using sqlplus / having autobackup of controlfile configured on non
shared location.

ORA-245 error message description
----------------------------------------
00245, 00000, "control file backup operation failed"
*Cause: Failed to create a control file backup because some process
signaled an error during backup creation.
*Action: Check alert files for further information. This usually happens
because some process could not access the backup file during
backup creation. Any process of any instance that starts a
read/write control file transaction must have an access to the
backup control file during backup creation.

Description
1. In RAC environment controlfile autobackup fails with ora-0245

Autobackup of controlfile in RMAN is failing with error:
RMAN-571: ===========================================================
RMAN-569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-571: ===========================================================
RMAN-3009: failure of Control File and SPFILE Autobackup command on
ORA_DISK_1 channel at 10/27/2010 12:13:31
ORA-245: control file backup operation failed

2. In RAC environment, backup controlfile to non shared location fails

SQL> ALTER DATABASE BACKUP CONTROLFILE TO '/home/rac1122/test/control.bk' REUSE
*
ERROR at line 1:
ORA-245: control file backup operation failed

3. In RAC environment backing up standby controlfile to non shared location fails

SQL> alter database create standby controlfile as '/home/oracle/renostdbycntrl.ctl';

alter database create standby controlfile as
'/home/oracle/renostdbycntrl.ctl'
*
ERROR at line 1:
ORA-245: control file backup operation failed

4. In RAC environment copy current controlfile to '${DB_BACKUP_DIR}/rac_tnctv_control.bak';

channel ch1: starting datafile copy
copying current control file
RMAN-571: ===========================================================
RMAN-569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-571: ===========================================================
RMAN-3009: failure of backup command on 10/07/2011 11:36:42 channel at ch1
ORA-245: control file backup operation failed

5. In RAC environment, Rman backup fails if snapshot controlfile is not in shared location.

RMAN-00571: ========================================================
RMAN-00569: ============ ERROR MESSAGE STACK FOLLOWS =============
RMAN-00571: =========================================================
RMAN-03009: failure of resync command on default channel at 03/13/2012 10:19:41
ORA-00245: control file backup operation failed

Occurrence
Only affect Real application Cluster (RAC ), 11.2 specific.

Symptoms
In RAC environment any form of controlfile backup may fail with ORA-0245 if the location of the Snapshot Controlfile is not a shared location.

The backup of the controlfile actualy makes a backup of the SNAPSHOT controlfile. The Snapshot controlfile is created when the controlfile is about to be backed up.

The Snapshot controlfile is a read-consistent copy of the controlfile.

Workaround
SOLUTION:

This is a RAC specific 'configuration' issue and the correct configuration is as described below

It is changed behaviour which requires that the snapshot controlfile in a RAC environment, is on a shared location.

1. Check the snapshot controlfile location:

RMAN> show snapshot controlfile name;

2. Configure the snapshot controlfile to a shared disk:

RMAN> CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/snapcf_.f';
Or in case of ASM use

RMAN> CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+/snapcf_.f';
Patches
NA

History
02-07-2012 created and Published alert