一、查询表空间使用情况
select a.tablespace_name as "表空间名",a.bytes / 1024 / 1024 as "表空间大小(M)",(a.bytes - b.bytes) / 1024 / 1024 as "已使用空间(M)",b.bytes / 1024 / 1024 "空闲空间(M)",round(((a.bytes - b.bytes) / a.bytes) * 100,2) "使用比" from (select tablespace_name,sum(bytes) bytes from dba_data_files group by tablespace_name) a,(select tablespace_name,sum(bytes) bytes,max(bytes) largest from dba_free_space group by tablespace_name) b where a.tablespace_name = b.tablespace_name order by ((a.bytes - b.bytes) / a.bytes) desc;
二、扩展表空间
1、查看表空间的名字及文件所在位置
select tablespace_name,file_id,file_name,round(bytes / (1024 * 1024),0) total_space from dba_data_files order by tablespace_name
2、扩展所需表空间大小
alter database datafile 'F:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\xxx.DBF' resize 1024m;
alter tablespace 表空间名称 add datafile 'F:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\new_xxx.DBF' size 500m
ALTER DATABASE DATAFILE 'xxx\xxx.dbf' AUTOEXTEND ON;//打开自动增长
ALTER DATABASE DATAFILE 'xxx\xxx.dbf' AUTOEXTEND ON NEXT 200M ;//每次自动增长200m
ALTER DATABASE DATAFILE 'xxx\xxx.dbf' AUTOEXTEND ON NEXT 200M MAXSIZE 1024M;//每次自动增长200m,表空间最大不超过1G
作者:itmyhome
原文链接:https://www.f2er.com/oracle/208771.html