ORA-15196: invalid ASM block header----惜分飞

客户反馈,数据库无法正常启动，通过分析asm的alert日志发现,data磁盘组mount成功之后,没有一会儿自动dismount掉

Mon Sep 26 16:40:14 2022 SQL> /* ASMCMD */ALTER DISKGROUP data MOUNT  NOTE: cache registered group DATA number=2 incarn=0x9dfa705f NOTE: cache began mount (first) of group DATA number=2 incarn=0x9dfa705f NOTE: Assigning number (2,1) to disk (/dev/oracleasm/disks/DATA02) NOTE: Assigning number (2,0) to disk (/dev/oracleasm/disks/DATA01) Mon Sep 26 16:40:20 2022 NOTE: GMON heartbeating for grp 2 GMON querying group 2 at 68 for pid 25, osid 14650 NOTE: cache opening disk 0 of grp 2: DATA_0000 path:/dev/oracleasm/disks/DATA01 NOTE: F1X0 found on disk 0 au 2 fcn 0.0 NOTE: cache opening disk 1 of grp 2: DATA_0001 path:/dev/oracleasm/disks/DATA02 NOTE: cache mounting (first) external redundancy group 2/0x9DFA705F (DATA) Mon Sep 26 16:40:20 2022 * allocate domain 2, invalid = TRUE kjbdomatt send to inst 2 Mon Sep 26 16:40:20 2022 NOTE: attached to recovery domain 2 NOTE: cache recovered group 2 to fcn 0.321845 NOTE: redo buffer size is 256 blocks (1053184 bytes) Mon Sep 26 16:40:20 2022 NOTE: LGWR attempting to mount thread 1 for diskgroup 2 (DATA) NOTE: LGWR found thread 1 closed at ABA 20.3546 NOTE: LGWR mounted thread 1 for diskgroup 2 (DATA) NOTE: LGWR opening thread 1 at fcn 0.321845 ABA 21.3547 NOTE: cache mounting group 2/0x9DFA705F (DATA) succeeded NOTE: cache ending mount (success) of group DATA number=2 incarn=0x9dfa705f Mon Sep 26 16:40:20 2022 NOTE: Instance updated compatible.asm to 11.2.0.0.0 for grp 2 SUCCESS: diskgroup DATA was mounted SUCCESS: /* ASMCMD */ALTER DISKGROUP data MOUNT Mon Sep 26 16:40:22 2022 WARNING: failed to online diskgroup resource ora.DATA.dg (unable to communicate with CRSD/OHASD) Mon Sep 26 16:40:47 2022 NOTE: client xff1:xff registered, osid 14742, mbr 0x0 Mon Sep 26 16:40:57 2022 WARNING: cache read  a corrupt block: group=2(DATA) dsk=1 blk=257 disk=1 (DATA_0001) incarn=3916071178 au=113792 blk=1 count=1 Errors in file /opt/grid/diag/asm/+asm/+ASM1/trace/+ASM1_ora_14778.trc: ORA-15196: invalid ASM block header [kfc.c:26368] [endian_kfbh] [2147483649] [257] [0 != 1] NOTE: a corrupted block from group DATA was dumped to /opt/grid/diag/asm/+asm