查看版本号
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sqlplus / as sysdba
>select * from v$version;
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备份orcl数据库
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export ORACLE_SID=orcl
rman targer /
>backup full database plus archivelog;
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升级
./runInstall 安装升级包
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sqlplus / as sysdba
>startup upgrade
>@$ORACLE_HOME/rdbms/admin/catupgrd.sql
>shutdown immediate
>startup
>@$ORACLE_HOME/rdbms/admin/utlrp.sql
>select * from utl_recomp_errors; ----------> 无选定行说明无错误
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检查
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>select name from v$database ------->确认ORACLE_SID正确，为oral
>show user ------->确认当前使用者为SYS
>select tablespace_name,bytes from dba_data_files ------>确认表空间大小
>@$ORACLE_HOME/rdbms/admin/catalog.sql
>shutdown immediate
>startup
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手工卸载oracle：
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/etc/ora*
/usr/local/bin/oraenv
/usr/local/bin/dbhome
/usr/local/bin/coraenv
$ORACLE_BASE/*
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