Background Media Recovery terminated with ORA-1274 after adding a Datafile (Doc ID 739618.1)

2022-09-05 22:31:40

APPLIES TO:

Oracle Database - Enterprise Edition - Version 9.2.0.1 to 12.1.0.2 [Release 9.2 to 12.1]
Information in this document applies to any platform.
***Checked for relevance on 26-Sep-2012***
***Checked for relevance on 8-Jul-2015***

SYMPTOMS

Adding a Tablespace / Datafile in Primary Database causes the MRP in Physical Standby Database to terminate with the Error below. STANDBY_FILE_MANAGEMENT = MANUAL is set on the Standby Database.

MRP0: Background Media Recovery terminated with error 1274
ORA-01274: cannot add datafile '...dbf' - file could not be created

In Unix Environment you will get the below Message when try to restart the MRP

ORA-01111: name for data file 163 is unknown - rename to correct file

BEST Practice,

Keep the STANDBY_FILE_MANAGEMENT in AUTO.

CAUSE

This Error occurs if we add a Datafile OR Tablespace in PRIMARY Database and that could not be translated to the Standby Database due to these Reasons:

Standby_file_management is set to MANUAL
Primary & Physical Standby are having different file structures and DB_FILE_NAME_CONVERT is not set according to the Directory Structures in Primary and Standby
Insufficient Space or wrong Permissions on the Standby Database to create the Datafile
If standby_file_management is set to Auto ,but directory path of Primary and standby are different , db_file_name_convert is not set ,but db_create_file_dest has been set to wrong value on standby.

The Redo Log generated from Primary will have Information about the Tablespace / Datafile added however it could not be created successfully in Physical Standby Database due to the standby_file_management = MANUAL
or is not able to find the specified Folder due to a missing / incorrect Filename Conversion.
The File Entry is added to Standby Controlfile as "UNNAMED0000n" in /dbs or /database
folder depends on the Operating System and eventually the MRP terminates.

Alert Log in Standby Shows MRP is terminated with below error
=================================================================
File #5 added to control file as 'UNNAMED00005' because
the parameter STANDBY_FILE_MANAGEMENT is set to MANUAL
The file should be manually created to continue.
MRP0: Background Media Recovery terminated with error 1274
Thu Sep 25 19:02:35 2008
Errors in file c:\oracle\product\10.2.0\admin\mystd\bdump\mystd_mrp0_3436.trc:
ORA-01274: cannot add datafile 'D:\ORADATA\PRIM\SALES01.DBF' - file could not be created

By default it is AUTO by broker.

SOLUTION

Perform all mentioned Steps on the Standby Database:

For version < 12c

Step 1: Ensure the standby_file_management = 'MANUAL.

NOTE : For the parameter db_file_name_convert change if the Data Guard Broker is enabled then edit the Parameters using the Broker

DGMGRL>edit database '<standby>' set property DbFileNameConvert='<>','<>';
DGMGRL>edit database '<standby>' set property StandbyFileManagement=manual;

By default StandbyFileManagement is AUTO by broker.

Step 2: Identify the File which is "unnamedn"

SQL> select name from v$datafile;

NAME
--------------------------------------------------------------------------------
D:\ORADATA\MYSTD\SYSTEM.DBF
D:\ORADATA\MYSTD\UNDO.DBF
D:\ORADATA\MYSTD\SYSAUX.DBF
D:\ORADATA\MYSTD\SERVICE01.DBF
C:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00005

Step 3: Rename/create the Datafile to the correct Filename

SQL> alter database create datafile 'C:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\UNNAMED00005' as 'D:\oradata\mystd\sales01.dbf';

If the standby is in ASM + OMF then use the below command,

SQL> alter database create datafile '/oracle/product/GSIPRDGB/dbs/UNNAMED00210' as <'+ASMDISKGROUPNAME'> size <specify the size of datafile>;

SQL>alter database create datafile '/oracle/product/GSIPRDGB/dbs/UNNAMED00210' as new;

Step 4: Verify the Filename is correct

SQL> select name from v$datafile;

Step 5: Change the STANDBY_FILE_MANAGMENT to AUTO

SQL> ALTER SYSTEM SET STANDBY_FILE_MANAGEMENT=AUTO scope=both;

Step 6: Start the MRP (this is using Real Time Apply)

SQL> alter database recover managed standby database using current logfile disconnect;

Database altered.

Step 7: Verify the MRP is running as expected

SQL> select process, status , sequence# from v$managed_standby;

PROCESS STATUS SEQUENCE#
--------- ------------ ----------
ARCH CLOSING 99
ARCH CLOSING 103
MRP0 APPLYING_LOG 104
RFS IDLE 0
RFS IDLE 0
RFS IDLE 104

For 12c Database with PDBs :-

Step 1: Ensure the standby_file_management = 'MANUAL'

NOTE : For the parameter db_file_name_convert change if the Data Guard Broker is enabled then edit the Parameters using the Broker,
DGMGRL>edit database '<standby>' set property DbFileNameConvert='<>','<>';
DGMGRL>edit database '<standby>' set property StandbyFileManagement=manual;

Step 2:- Identify the Pdb with datafile name UNNAMED

column name format a50

column pdb_name format a8

select a.file#,a.name,a.con_id,b.pdb_id,b.pdb_name from v$datafile a,dba_pdbs b where a.con_id=b.con_id and a.name like '%UNNAM%';

Step 3:- Set the container to that pdb

In Below example assuming pdb1 is the container

SQL> alter session set container = pdb1;

Session altered.

FILE# NAME CON_ID PDB_ID PDB_NAME
--------- -------------------------------------------------- ---------- ---------- --------
5 D:\ORADATA\MYSTD\UNNAMED00005 3 3 PDB1

SQL> alter pluggable database pdb1 CREATE DATAFILE 'D:\ORADATA\MYSTD\UNNAMED00005' as 'D:\ORADATA\MYSTD\SP385343393_ess.dbf';

Pluggable database altered.

Step 4-7 are same as listed for version < 12c