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最近幫一個好哥們處理了一個數(shù)據(jù)庫系統(tǒng)性能問題,經(jīng)過分析awr報告查看官方文檔,發(fā)現(xiàn)一處12.1.0.2的bug,正好客戶有服務(wù),開了SR,官方回復(fù)郵件確認(rèn)此問題。
安裝此版本的生產(chǎn)系統(tǒng),可以把相關(guān)參數(shù)(_notify_crs=false)關(guān)閉掉。
部分awr截圖如下:
Oracle Database - Enterprise Edition - Version 11.2.0.3 and later
Information in this document applies to any platform.
o Grid Infrastructure home and rdbms home is running on 11.2.0.3.7.
o Database instance fail to start, with ORA-7445 [strstr()]
o The failing process is gen0, and the current Wait Stack shows waiting for 'CRS call completion'
o The call stack of the error is:
ORA-07445: exception encountered: core dump [strstr()] [SIGSEGV] [ADDR:0x0] [PC:0x3EC307A310] [SI_KERNEL(general_protection)]
Call stack:
[]skdstdst<-ksedst1<-ksedst<-dbkedDefDump<-ksedmp<-ssexhd<-__sighandler<-strstr<-clsrapii_rem_dep
Due to
BUG 22999793 - ORA-07445 [__STRSTR_SSE42()+10] - SIMILAR TO BUG 17230892 THAT CT IS HITTING
The bug fix is included in 12.2.0.2, request/apply the patch if there's an impact.
The workaround for successful startup of instance is by setting hidden parameter "_notify_crs"=false, which will prevent the database instance from notifying the CRS daemon process.
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