查询表报错表空间问题

SQL> select count(*) from test.tab;

select count(*) from test.tab

ERROR at line 1:

ORA-00376: file 415 cannot be read at this time

ORA-01110: data file 415: '/var/test/xxx_0154.dbf'

检查表空间状态recover

select file#,name,status from v$datafile where status!='ONLINE' and status!='SYSTEM';

  FILE# NAME                                               STATUS

---------- -------------------------------------------------- -------

       55 /var/test/tablesapce0.dbf       RECOVER

       56 /var/test/tablesapce1.dbf       RECOVER

       57 /var/test/tablesapce3.dbf       RECOVER

       58 /var/test/tablesapce4.dbf       RECOVER

查询数据库日志，发现drop表空间操作

DROP TABLESPACE "xxx"                              

ORA-1549 signalled during: DROP TABLESPACE "xxx"...

ALTER TABLESPACE "xxx" OFFLINE IMMEDIATE  

检查数据库归档情况

archive log list;

若恢复文件较多，拼接sql，进行恢复

 select file#||',' from v$datafile where status='RECOVER' ;

 recover datafile 1,2 ;

恢复后的数据文件会是offline状态，需要手动online，拼接sql将恢复后的数据文件online；

select 'alter  database datafile '||file#||' online ;' from v$datafile where status='OFFLINE' ;

查询报错数据文件状态，发现enabled 状态为disabled，正常状态应为READ WRITE

select file#,name,status from v$datafile where ENABLED='DISABLED';

手动将表空间online后恢复

alter tablespace xxx online;