"disk %s contains a valid RDBMS file"
*Cause: A disk specified in a CREATE DISKGROUP or ALTER DISKGROUP ...
ADD DISK command appeared to contain a file from an existing
database. By default, ASM will not allow a diskgroup to be
created using this disk, as a safeguard against damaging an
*Action: Check that the ASM disk specification is correct. Otherwise,
when storage from a defunct database is reused as part of an
ASM diskgroup, specify the FORCE option to the ASM SQL command.