We are having standby(DRS) server for our production.
We have switch over to standby server. After running check DB we have faced the follwoing error :
BR0301E SQL error -1187 at location BrTspListGet-21
ORA-01187: cannot read from file 255 because it failed verification tests
ORA-01110: data file 255: '/oracle/R3P/sapdata1/temp_3/temp.data3'.
Our oracle version is 126.96.36.199 on AIX.
The data file 255 is existing with proper permissions.