alert发现如下错误ORA-07445[dbgrmqmqpk_query_pick_key()+0f88]

Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0xB38F0000000049]
[PC:0x100213C08, dbgrmqmqpk_query_pick_key()+0f88]
Errors in file /oracle/diag/rdbms/sgerp5/sgerp5/trace/sgerp5_m000_7602504.trc  (incident=579300):
ORA-07445: exception encountered: core dump [dbgrmqmqpk_query_pick_key()+0f88] [SIGSEGV] [ADDR:0xB38F0000000049]
[PC:0x100213C08] [Address not mapped to object] []
Incident details in: /oracle/diag/rdbms/sgerp5/sgerp5/incident/incdir_579300/sgerp5_m000_7602504_i579300.trc

trace文件部分信息

Dump file /oracle/diag/rdbms/sgerp5/sgerp5/incident/incdir_579300/sgerp5_m000_7602504_i579300.trc
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORACLE_HOME = /oracle/product/11.1.0/db_1
System name:	AIX
Node name:	sgerp5
Release:	1
Version:	6
Machine:	00C8F0564C00
Instance name: sgerp5
Redo thread mounted by this instance: 1
Oracle process number: 138
Unix process pid: 7602504, image: oracle@sgerp5 (m000)
--确定是m000进程出现异常,而该进程是awr收集统计信息进程MMON的子进程
*** 2012-05-11 03:52:35.200
*** SESSION ID:(752.5029) 2012-05-11 03:52:35.200
*** CLIENT ID:() 2012-05-11 03:52:35.200
*** SERVICE NAME:(SYS$BACKGROUND) 2012-05-11 03:52:35.200
*** MODULE NAME:(MMON_SLAVE) 2012-05-11 03:52:35.200
*** ACTION NAME:(Auto-Purge Slave Action) 2012-05-11 03:52:35.200
Dump continued from file: /oracle/diag/rdbms/sgerp5/sgerp5/trace/sgerp5_m000_7602504.trc
ORA-07445: exception encountered: core dump [dbgrmqmqpk_query_pick_key()+0f88] [SIGSEGV] [ADDR:0xB38F0000000049]
[PC:0x100213C08] [Address not mapped to object] []
----- Incident Context Dump -----
Address: 0x1104bdb68
Incident ID: 579300
Problem Key: ORA 7445 [dbgrmqmqpk_query_pick_key()+0f88]
Error: ORA-7445 [dbgrmqmqpk_query_pick_key()+0f88] [SIGSEGV] [ADDR:0xB38F0000000049] [PC:0x100213C08]
[Address not mapped to object] [] [] []
[00]: dbgexExplicitEndInc [diag_dde]
[01]: dbgeEndDDEInvocationImpl [diag_dde]
[02]: dbgeEndDDEInvocation [diag_dde]
[03]: ssexhd []
[04]: 47dc []<-- Signaling
[05]: dbgrmqmfs_fetch_setup [ams_comp]
[06]: dbgrmqmf_fetch_real [ams_comp]
[07]: dbgrmqmf_fetch [ams_comp]
[08]: dbgrip_fetch_record [ami_comp]
[09]: dbgrip_relation_iterator [ami_comp]
[10]: dbgripricm_rltniter_wcbf_mt [ami_comp]
[11]: dbgripdrm_dmldrv_mt [ami_comp]
[12]: dbghmm_delete_info_records []
[13]: dbghmo_purge_hm_schema []
[14]: dbgrupipscb_hm_pgsvc_cbf [diag_adr]
[15]: dbgruppm_purge_main [diag_adr]
[16]: dbkrapg_auto_purge [rdbms_adr]
[17]: kewraps_auto_purge_slave []
[18]: kebm_slave_main []
[19]: ksvrdp [ksv_trace]
[20]: opirip []
[21]: opidrv []
[22]: sou2o []
[23]: opimai_real []
[24]: main []
[25]: __start []
MD [00]: 'SID'='752.5029' (0x3)
MD [01]: 'ProcId'='138.46' (0x3)
MD [02]: 'PQ'='(0, 1336679546)' (0x7)
MD [03]: 'Client ProcId'='oracle@sgerp5.7602504_1' (0x0)

MOS关于该问题记录
问题原因

This is due to Bug 9390347 fixed in 12.1 & 11.2.0.2, where a core dump can occur
in module dbgrmqmqpk_query_pick_key() whilst purging HM contents from ADR.

解决方案

- Either install our 11.2.0.2 patchset
- Or download and apply Patch 9390347 if available for your version/platform.
- On Windows, you can also install Bundle Patch 11.1.0.7.31 or above.
There is no workaround to this error, however the error is not serious and does not cause any harm to your database.