Linux系统下表空间数据文件最大为32G,当超过32G时,表空间自动扩增失败,此时则需要手动增加表空间,具体如下:
1、查询表空间使用率;
select a.tablespace_name, total, free, total-free as used, substr(free/total * 100, 1, 5) as "FREE%", substr((total - free)/total * 100, 1, 5) as "USED%" from
(select tablespace_name, sum(bytes)/1024/1024 as total from dba_data_files group by tablespace_name) a,
(select tablespace_name, sum(bytes)/1024/1024 as free from dba_free_space group by tablespace_name) b
where a.tablespace_name = b.tablespace_name
order by a.tablespace_name;
2、表空间数据文件物理存储位置;
select file_name, tablespace_name, bytes/1024/1024 AS MB from dba_data_files;
3、指定表空间,扩容数据文件;
ALTER TABLESPACE NNC_DATA01 ADD DATAFILE '/data/app/oracle/oradata/ORCL/nnc_data01_ex01.dbf' SIZE 16G AUTOEXTEND ON NEXT 1G ;
4、扩容完成;