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前不久有个朋友从遇到了个问题，在数据库启动过程种出现ora-7445, 然后数据库CRASH, 环境11.1.0.7 windows 版本， 临时禁用了smon tx recovery打开数据库, 没有再继续跟踪，这里记录一下.
ORA-07445: exception encountered: core dump [intel_fast_memcpy.A()+18] [ACCESS_VIOLATION] [ADDR:0x19DC0000] [PC:0x52B428E] [UNABLE_TO_WRITE] []
ORA-07445: exception encountered: core dump [LpxFSMSaxSE()+449] [SIGSEGV] [ADDR:0xFD26CFB5] [PC:0x400000001117F881] [Address not mapped to object] []
—– Current SQL Statement for this session (sql_id=6qt1f1pg1dkzs) —–
SELECT UPPER(XMLType(CHR(60) || CHR(58) || CHR(113) || CHR(120) ||
ORA-00600: 内部错误代码, 参数: [kgh_heap_sizes:ds], [0x700000E82B30018], [], [], [], [], [], [], [], [], [], []
ORA-07445: 出现异常错误: 核心转储 [opiaba()+788] [SIGSEGV] [ADDR:0xF00000E161B7CD2] [PC:0x10662AFD4] [Address not mapped to object] []
Exception [type: SIGSEGV, Invalid permissions for mapped object] [ADDR:0x63] [PC:0x107C00D30, kkqteParseSqlForPG()+1840] [flags: 0x0, count: 1]
Errors in file /u01/app/oracle/diag/rdbms/anbob/anbob1/trace/anbob1_ora_22283288.trc (incident=253347):
ORA-07445: 出现异常错误: 核心转储 [kkqteParseSqlForPG()+1840] [SIGSEGV] [ADDR:0x63] [PC:0x107C00D30] [Invalid permissions for mapped object] []
Exception [type: SIGIOT, unknown code] [ADDR:0x6CA9] [PC:0xC0000000003125F0, __lwp_kill()+48] [exception issued by pid: 27817, uid: 1024] [flags: 0x0, count: 1]
Errors in file /oracle/app/oracle/diag/rdbms/anbob/anbob1/trace/anbob1_lms3_27817.trc (incident=704134):
ORA-07445: exception encountered: core dump [__lwp_kill()+48] [SIGIOT] [ADDR:0x6CA9] [PC:0xC0000000003125F0] [unknown code] []