分类: Oracle
Oracle修改表空间大小并设置为自动增长

Oracle我在创建表空间的时候初始化大小为200M,当数据库中数据量达到这个值,再向数据库中导入数据就会报错,解决方法是扩展表空间。
查看数据文件名及数据文件存放路径:

select * from v$dbfile;

查看表空间的名称及大小

SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size 
FROM dba_tablespaces t, dba_data_files d 
WHERE t.tablespace_name = d.tablespace_name 
GROUP BY t.tablespace_name; 

查看表空间物理文件的名称及大小

SELECT tablespace_name, 
file_id, 
file_name, 
round(bytes / (1024 * 1024), 0) total_space 
FROM dba_data_files 
ORDER BY tablespace_name; 

查看各表空间分配情况:

select tablespace_name,bytes/1024/1024 from dba_data_files order by bytes;  

查看各表空间空闲情况

select tablespace_name, sum(bytes)/1024/1024 from dba_free_space group by tablespace_name;

更改表空间大小(10G)

alter database datafile '/oracle/oradata/powerdes/xxx.dbf' resize 10G; 

查看表空间是否开启自动增长

SELECT FILE_NAME,TABLESPACE_NAME,AUTOEXTENSIBLE FROM dba_data_files;

设置表空间自动增长

ALTER DATABASE DATAFILE '/oracle/oradata/powerdes/xxx.dbf' AUTOEXTEND ON;//打开自动增长  
ALTER DATABASE DATAFILE '/oracle/oradata/powerdes/xxx.dbf' AUTOEXTEND ON NEXT 200M ; //每次自动增长200m  
ALTER DATABASE DATAFILE '/oracle/oradata/powerdes/xxx.dbf' AUTOEXTEND ON NEXT 200M MAXSIZE 20G; //每次自动增长200m,表空间最大不超过20G

查看回滚段名称及大小

SELECT segment_name, 
tablespace_name, 
r.status, 
(initial_extent / 1024) initialextent, 
(next_extent / 1024) nextextent, 
max_extents, 
v.curext curextent 
FROM dba_rollback_segs r, v$rollstat v 
WHERE r.segment_id = v.usn(+) 
ORDER BY segment_name;

查看控制文件

SELECT NAME FROM v$controlfile;

查看日志文件

SELECT MEMBER FROM v$logfile;

查看表空间的使用情况

SELECT SUM(bytes) / (1024 * 1024) AS free_space, tablespace_name 
FROM dba_free_space 
GROUP BY tablespace_name; 
SELECT a.tablespace_name, 
a.bytes total, 
b.bytes used, 
c.bytes free, 
(b.bytes * 100) / a.bytes "% USED ", 
(c.bytes * 100) / a.bytes "% FREE " 
FROM sys.sm$ts_avail a, sys.sm$ts_used b, sys.sm$ts_free c 
WHERE a.tablespace_name = b.tablespace_name 
AND a.tablespace_name = c.tablespace_name; 

查看数据库库对象

SELECT owner, object_type, status, COUNT(*) count# 
FROM all_objects 
GROUP BY owner, object_type, status; 

查看数据库的版本

SELECT version 
FROM product_component_version 
WHERE substr(product, 1, 6) = 'Oracle'; 

查看数据库的创建日期和归档方式

SELECT created, log_mode, log_mode FROM v$database; 


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