MRP0: Background Media Recovery terminated with error 1274 | ORA-01274: cannot add data file

I got ” MRP0: Background Media Recovery terminated with error 1274 after adding a Datafile ” error in Oracle dataguard ( Standby Site ).


MRP0: Background Media Recovery terminated with error 1274


Details of error are as follows.


File #692 added to control file as 'UNNAMED00692' because
the parameter STANDBY_FILE_MANAGEMENT is set to MANUAL
The file should be manually created to continue.
Errors with log +ARCH_MSDB/MSDBDR/ARCHIVELOG/2020_12_02/thread_4_seq_336447.1795.1058125471
PR00 (PID:94177): MRP0: Background Media Recovery terminated with error 1274
Errors in file /u01/app/oracle/diag/rdbms/MSDBdr/MSDBDR1/trace/MSDBDR1_pr00_94177.trc:
ORA-01274: cannot add data file that was originally created as '+DATA/MSDB/DATAFILE/bigdatatbs.184399.1058113529'
Recovery interrupted!
rfs (PID:322307): Archived Log entry 4725 added for B-977575671.T-8.S-359459 ID 0x7a7af737 LAD:2



ORA-01274: cannot add data file

The ORA-01274 error is related with the new added datafile to the Production and  standby_file_management parameter is set to MANUAL in standby database.

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.


SQL> show parameter standby_file

------------------------------------ ----------- ------------------------------
standby_file_management string MANUAL


To solve this error, Find the unnamed file in Standby. You can find out This unnamed filename both in alertlog and with the following script.

SQL> select file#,name from v$datafile where name like '%UNNAMED%';



Now create it again as follows, it will solve this error.


SQL> alter database create datafile '/u01/app/oracle/product/' as '+DATAC1';

Database altered.



And set the standby_file_management  to the auto as follows.

SQL>alter database set standby_file_management = 'auto' scope=both sid='*';

Now Start the MRP Process and start dataguard again as follows.


Database altered.




You can read the following post to see dataguard related errors.

ORA-01111: name for data file | ORA-01110: data file | MRP0: Background Media Recovery terminated with error 1111





If you want to learn how to install Dataguard ( Standby ), read the following post.

Oracle DataGuard Physical Standby Installation Step by Step Using RMAN -1


Do you want to learn Oracle Database for Beginners, then Click and read the following articles.

Oracle Database Tutorials for Beginners ( Junior Oracle DBA )

About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress [email protected].-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  [email protected] a mail atabilirsiniz.

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