恢复RAC数据库到异机单实例时，遇到UNDO表空间数据文件头损坏的情况，在RESTORE完成后，告警日志大量出现以下告警： Reading datafile '/data/uatdb/ivldb2_undo.dbf' for corruption at rdba: 0x00000001 (file 7, block 1) Reread (file 7, block 1) found same corrupt data (no logical check) Hex dump of (file ...