ORA-15201：disk string contains a valid RDBMS file or foreign volume
错误码
错误描述：disk string contains a valid RDBMS file or foreign volume
错误原因：A disk specified in a CREATE DISKGROUP or ALTER DISKGROUP ... ADD DISK command appeared to contain a file from an existing database or a foreign volume. By default, as a safeguard against damaging an existing database or foreign volume, ASM does not allow a disk group to be created using this disk.
解决方法：Check that the ASM disk specification is correct. Otherwise, when storage from a defunct database or unmounted foreign volume is reused as part of an ASM disk group, specify the FORCE option to the ASM SQL command. See the alert log for more information.
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