Today, I has added a datafile of an tablespace with 'alter tablespace tbs_name add datafile '+DATA' 8g'. I received a critical warning that the data guard standby machine done which could not synchronous the data after a period time.
I viewed the alert log and found that the DG machine's asm disk group has a little space which less then 8g, and can not synchronous the 'create datafile ...'.
So, I added the space of the asm disk group. When I startup the DG instance, encountered the error
MRP0: Background Media Recovery terminated with error 1111 Errors in file /u01/app/oracle/diag/rdbms/db4dg/cedb/trace/cedb_pr00_25766.trc: ORA-01111: name for data file 69 is unknown - rename to correct file ORA-01110: data file 69: '/u01/app/oracle/product/11.2.0/db_1/dbs/UNNAMED00069' ORA-01157: cannot identify/lock data file 69 - see DBWR trace file ORA-01111: name for data file 69 is unknown - rename to correct file ORA-01110: data file 69: '/u01/app/oracle/product/11.2.0/db_1/dbs/UNNAMED00069' Managed Standby Recovery not using Real Time Apply Slave exiting with ORA-1111 exception
In order to deal with the erro , I done as the following:
alter system set standby_file_management=manual; alter database create datafile '/u01/app/oracle/product/11.2.0/db_1/dbs/UNNAMED00069' as '+DATA/db4dg/datafile/tbs_name'; alter system set standby_file_management=auto; alter database recover managed standby database disconnect from session using current logfile; (11g) alter database recover managed standby database disconnect from session;(10g)