ORA-15132: block string of file string in diskgroup

admin

ORA-15132: block string offile string indiskgroup string couldnot be written
Cause: A block could not be written because the diskcontaining the block is
either offline or an I/O error occured while writing the block. If this ismirrored
file, then insufficient disks which contain a copy of the block are eitheroffline or
received errors.
Action: Repairthe affected disk and bring it back online. Refer to accompanying
error messages to determine which disk has failed.