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标签归档:Buffer I/0 error on dev恢复
Buffer I/O error on dev故障数据库恢复
客户对虚拟化环境进行物理机加内存,结果发现数据库服务器无法正常启动,报Buffer I/O error on dev错误
通过对底层虚拟化磁盘进行分析,确定vg为centos,数据所在的磁盘组为root
![20230313213019](https://www.xifenfei.com/wp-content/uploads/2023/03/20230313213019.jpg)
进一步恢复其中数据
![20230313233918](https://www.xifenfei.com/wp-content/uploads/2023/03/20230313233918.jpg)
然后顺利打开数据库,数据0丢失
[oracle@xifenfei u01]$ sqlplus / as sysdba SQL*Plus: Release 19.0.0.0.0 - Production on Mon Mar 13 23:27:42 2023 Version 19.13.0.0.0 Copyright (c) 1982, 2021, Oracle. All rights reserved. Connected to an idle instance. SQL> startup ORACLE instance started. Total System Global Area 1.0100E+10 bytes Fixed Size 13625520 bytes Variable Size 6241124352 bytes Database Buffers 3825205248 bytes Redo Buffers 19927040 bytes Database mounted. Database opened. SQL> select status,count(1) from v$datafile group by status; STATUS COUNT(1) ------- ---------- SYSTEM 1 ONLINE 21