【Oracle Asm数据恢复】ORA-00600 [kfdAuDealloc2]错误解析

某用户asm实例遇到ora-00600 [kfdaudealloc2]错误，详细日志如下： Errors in file /opt/oracle/diag/asm/+asm/+ASM1/trace/+ASM1_arb6_15539.trc:ORA-00600: internal error code, arguments: [kfdAuDealloc2], [35], [272], [748], [], [], [], [], [], []

某用户asm实例遇到ora-00600 [kfdaudealloc2]错误，详细日志如下：

Errors in file /opt/oracle/diag/asm/+asm/+ASM1/trace/+ASM1_arb6_15539.trc:
ORA-00600: internal error code, arguments: [kfdAuDealloc2], [35], [272], [748], [], [], [], [], [], [], [], []
NOTE: stopping process ARB6
ERROR: ORA-600 thrown in ARB2 for group number 1
Errors in file /opt/oracle/diag/asm/+asm/+ASM1/trace/+ASM1_arb2_15523.trc:
ORA-00600: internal error code, arguments: [kfdAuDealloc2], [148], [270], [720], [], [], [], [], [], [], [], []
NOTE: stopping process ARB2
ERROR: ORA-600 thrown in ARB3 for group number 1
Errors in file /opt/oracle/diag/asm/+asm/+ASM1/trace/+ASM1_arb3_15527.trc:
ORA-00600: internal error code, arguments: [kfdAuDealloc2], [196], [271], [0], [], [], [], [], [], [], [], []
NOTE: stopping process ARB3
ERROR: ORA-600 thrown in ARB5 for group number 1
Errors in file /opt/oracle/diag/asm/+asm/+ASM1/trace/+ASM1_arb5_15535.trc:
ORA-00600: internal error code, arguments: [kfdAuDealloc2], [363], [272], [1], [], [], [], [], [], [], [], []
NOTE: stopping process ARB5
Errors in file /u02/oracle/ASM/diag/asm/+asm/+ASM/trace/+ASM_rbal_27162.trc (incident=674120):
ORA-00600: internal error code, arguments: [kfdAuDealloc2], [101], [335], [300], [], [], [], [], [], [], [], []
Incident details in: /u02/oracle/ASM/diag/asm/+asm/+ASM/incident/incdir_674120/+ASM_rbal_27162_i674120.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
ERROR: An unrecoverable error has been identified in ASM metadata. The instance will be taken down.
Sun Nov 25 20:51:11 2012
NOTE: AMDU dump of disk group DWHCTL1 created at /u02/oracle/ASM/diag/asm/+asm/+ASM/incident/incdir_674120
NOTE: starting check of diskgroup DWHCTL1
ERROR: file +dwhctl1.330.797592669: F330 PX11 => D0 A7650 => F385 PX135: fnum mismatch
ERROR: file +dwhctl1.330.797592669: F330 PX12 => D0 A7651 => F385 PX136: fnum mismatch

kfdAuDealloc2意味着Kernel Files Disk AU DEALLOCate ，其负责回收ASM DISK上的AU 。发生该错误一般说明 ASM metadata中的allocation table可能存在逻辑上的数据不一致。

相关bug :

Bug 5682184 OERI[kfdAuDealloc2] from resize/drop more than 16TB ASM?file

Bug 10621169 I/O errors during RAC ASM recovery may drop redo and cause metadata?corruptions / ORA-600

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BUG 10017130 – ORA-600 [KFDAUDEALLOC2] DURING?REBALANCE AFTER ADDING DISKS

出现该问题情况下可能需要手动patch asm metadata，建议联系Oracle Support原厂 或诗檀软件 ?400-690-3643。

如果自己搞不定可以找诗檀软件专业ORACLE数据库修复团队成员帮您恢复!

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原文地址：【Oracle Asm数据恢复】ORA-00600 [kfdAuDealloc2]错误解析, 感谢原作者分享。