ORACLE表空间查看和扩展
1、查看表空间使用情况
SELECT a.tablespace_name "表空间名",
total "表空间大小",
free "表空间剩余大小",
(total - free) "表空间使用大小",
total / (1024 * 1024 * 1024) "表空间大小(G)",
free / (1024 * 1024 * 1024) "表空间剩余大小(G)",
(total - free) / (1024 * 1024 * 1024) "表空间使用大小(G)",
round((total - free) / total, 4) * 100 "使用率 %"
FROM (SELECT tablespace_name, SUM(bytes) free
FROM dba_free_space
GROUP BY tablespace_name) a,
(SELECT tablespace_name, SUM(bytes) total
FROM dba_data_files
GROUP BY tablespace_name) b
WHERE a.tablespace_name = b.tablespace_name
2、查看表空间文件大小
select tablespace_name, file_id, file_name,round(bytes/(1024*1024),0) total_space from dba_data_files order by tablespace_name;
3、更改表空间文件大小
alter database datafile '/u01/oradata/orcl/users01.dbf' resize 33000m;
4、新增表空间文件
alter tablespace USERS add datafile '/u01/oradata/orcl/users02.dbf' size 4000m autoextend on next 1000m maxsize 12000M;
注:一般新增表空间文件即可。
我要把所有的坑都趟平!