ORA-64752：storage unavailable for new redo or backups for database string

错误原因：There was a failure while backing up redo or copying backups from a polling location. This condition may be due to one of the following reasons:* An individual backup piece exceeded the database protection policy DISK_RESERVE_SPACE value. * Guaranteed_copy is enabled but not enough data has been spooled to tape. * Misconfiguration of the storage location size.