Oracle數據庫還原恢復后，執(zhí)行alter database open resetlogs時遇到下面錯誤。如下所示：

SQL>?alter?database?open?resetlogs;alter?database?open?resetlogs*ERROR?at?line?1:ORA-00603:?ORACLE?server?session?terminated?by?fatal?errorORA-01092:?ORACLE?instance?terminated.?Disconnection?forcedORA-00704:?bootstrap?process?failureORA-00604:?error?occurred?at?recursive?SQL?level?1ORA-00904:?"I"."UNUSABLEBEGINNING#":?invalid?identifierProcess?ID:?19288Session?ID:?2?Serial?number:?4441

剛開始有點懵的，第一次遇到這種情形。不過搜索了一下metalink相關資料后，大致了解到是因為環(huán)境變量設置有誤導致這些錯誤出現的。這里先介紹一下這個案例的復雜背景：

當前機器為一個測試服務器（UAT環(huán)境），操作系統版本為HP-UX，數據庫版本Oracle 19c，然后因為Support人員要查找歷史數據，需要還原一個2020年時間點的數據庫備份。但是生產環(huán)境（PROD）在2020年是Oracle 11g，然后在2021年升級為了Oracle 19c，現在測試服務器（UAT環(huán)境）的數據庫版本也是Oracle 19c，于是從其它測試服務器拷貝了一個Oracle 11g版本的掛載帶點/opt/oracle11g到當前測試服務器（為了方便省事，如果重新安裝搭建Oracle 11g環(huán)境還麻煩一些），然后設置了一下/etc/oratab,如下所示：（xxx表示ORACLE_SID）

#xxx:/opt/oracle19c/product/19.3.0/db_1:Nxxx:/opt/oracle11g/product/11.2:N

退出當前SecureCRT窗口，重新登陸，提示修改成功，如下所示

ORACLE_SID?=?[xxx]???xxxOracle?SID??=?xxxOracle?BASE?=?/opt/oracle11gOracle?HOME?=?/opt/oracle11g/product/11.2SQL*Net?TNS?=?/etcORA_NLS10???=?/opt/oracle11g/product/11.2/nls/data

由于忙著檢查/修改pfile文件中的參數，當時沒有仔細檢查環(huán)境變量，匆匆忙忙就開始了數據庫實例的還原恢復，但是當前的和ORACLE_HOME環(huán)境變量確實還是Oracle 19c的環(huán)境變量

>echo?$ORACLE_BASE/opt/oracle19c>echo?$ORACLE_HOME/opt/oracle19c/product/19.3.0/db_1

修改環(huán)境變量~/.profile后，執(zhí)行. ~/.profile設置生效。然后重新登陸SecureCRT后，重新還原數據庫就不會遇到這個問題。另外，如果不重新還原，關閉數據庫后，重新OPEN數據庫亦可以，測試沒有什么問題。

官方文檔Database Startup Failure After RMAN Restore with ORA-00704, ORA-00604, ORA-00904 (Doc ID 2540757.1)的具體內容如下：

APPLIES?TO:Oracle?Database?-?Enterprise?Edition?-?Version?11.2.0.4?and?laterInformation?in?this?document?applies?to?any?platform.SYMPTOMS?SQL>?alter?database?open;alter?database?open*ERROR?at?line?1:ORA-01092:?ORACLE?instance?terminated.?Disconnection?forcedORA-00704:?bootstrap?process?failureORA-00604:?error?occurred?at?recursive?SQL?level?2ORA-00904:?"I"."UNUSABLEBEGINNING#":?invalid?identifierProcess?ID:?23346Session?ID:?680?Serial?number:?51933CHANGES?After?restoring?the?database?to?another?server?by?RMAN,?it?is?failed?to?startup.After?upgrade?or?post?upgradeCAUSE?>>>>>ORA-00904:?"I"."UNUSABLEBEGINNING#":?invalid?identifierThis?error?appears?due?to?using?the?incorrect?sqlplus?environment.?For?example.,?By?default?SQLPLUS?will?connect?to?the?default?ORACLE_HOME,?say?12C?Home?but?if?you?are?duplicating?the?11g?database?on?same?host?the?it?must?be?Oracle?11g?Environment?in?order?to?complete?the?process.1?-?This?issue?happens?when?we?have?installed?multiple?Oracle?Homes?in?a?single?system.2?-?We?need?to?make?sure?that?we?are?in?the?right?environment?when?we?are?restoring?it.SOLUTIONYou?need?to?set?all?the?required?Environment?Variables?first?as?per?your?need?like?ORACLE_SID,?ORACLE_BASE,?ORACLE_HOME,?TNS_ADMIN,?PATH?with?proper?values(OR)Simply?work?by?going?to?the?bin?directory?of?your?required?ORACLE_HOMESET?ORACLE_HOME=Your_Oracle_HomeCD?ORACLE_HOME\binEven?if?you?set?all?the?environment?parameter?properly,?then?need?to?investigate?further?to?verify?the?rman?backup?set?which?used?to?restore?or?verify?the?upgrade?logs,?component,?dba_registry?etc.Provide?the?details?requested?in?below?Notes?based?on?the?post?restore?or?post?upgradeNote?1905616.1??SRDC?-?Startup?Issues:?Checklist?of?Evidence?to?Supply?(Doc?ID?1905616.1)Note?1906468.1??SRDC?-?Startup?Shutdown?-?Oracle?Binary?and?OS?Resources:?Checklist?of?Evidence?to?Supply?(Doc?ID?1906468.1)Note:1672387.1??SRDC?-?Data?Collection?for?Upgrade?IssuesNote?753041.1?How?to?Diagnose?Components?with?NON?VALID?Status?in?DBA_REGISTRY?after?an?Upgrade?(Doc?ID?753041.1)Note?1965956.1??SRDC?-?Data?Collection?for?Datapatch?issues?(Doc?ID?1965956.1)Note?1671416.1??SRDC?-?Required?diagnostic?data?collection?for?RMAN?Restore?and?Recover?Using?TFA?Collector?(Recommended)?or?Manual?Steps?(Doc?ID?1671416.1)

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