On Tue, Jun 7, 2011 at 7:18 PM, Shastry(DBA) <shastry17@xxxxxxxxx> wrote: > Hi Oracle-l team, > > We faced the below issue on May mid 2011 and DB was up and running and we > thought there is an issue in server itself post SA firmware maintenance. > > Description: SQL> startup > ORACLE instance started. > > Total System Global Area 4731174912 bytes > Fixed Size 2090304 bytes > Variable Size 1140853440 bytes > Database Buffers 3573547008 bytes > Redo Buffers 14684160 bytes > Database mounted. > ORA-01122: database file 550 failed verification check > ORA-01110: data file 50: '/dev/mapper/oraSMSTG_data_010_8600Mp6' > ORA-01251: Unknown File Header Version read for file number 50 > > Database version = 10.2.0.4 > Platform = Linux x86_64 Hi, Looks like your database is using raw devices. Did you check if this block device exist '/dev/mapper/oraSMSTG_data_010_8600Mp6' and if user oracle has full access to it ? Do you have a backup of this file ? You can restore this database from backup using RMAN and then open db. Is this DB running in archive log mode ? regards, -- Marcin Przepiorowski http://oracleprof.blogspot.com -- //www.freelists.org/webpage/oracle-l