Home Database Mysql Tutorial 表空间(上)

表空间(上)

Jun 07, 2016 pm 04:06 PM
alter generally Revise Expansion Expand space automatic

4.直接修改表空间扩容: (1)一般表空间: 自动扩展: alter database datafile '/oracle/app/oradata/tbs_sys_ptcl.dbf' autoextend on; 关闭自动扩展:alter database datafile '/oracle/app/oradata/tbs_sys_ptcl.dbf' autoextend off; 指定大小: alter

4.直接修改表空间扩容:
(1)一般表空间:
自动扩展: alter database datafile '/oracle/app/oradata/tbs_sys_ptcl.dbf' autoextend on;
关闭自动扩展:alter database datafile '/oracle/app/oradata/tbs_sys_ptcl.dbf' autoextend off;
指定大小: alter database datafile '/oracle/app/oradata/tbs_sys_ptcl.dbf' resize 50m;

(2)临时表空间
自动扩展: alter database tempfile '/oracle/app/oradata/tbs_temp_ptcl.dbf' autoextend on;
关闭自动扩展:alter database datafile '/oracle/app/oradata/tbs_sys_ptcl.dbf' autoextend off;
指定大小: alter database tempfile '/oracle/app/oradata/tbs_temp_ptcl.dbf' resize 50m;

(3)扩容后查找语句:
select * from dba_tablespaces a where a.tablespace_name like '%PTCL';

5.为表空间添加新的数据文件
(1)一般表空间:
指定大小: alter tablespace tbs_sys_ptcl add datafile '/oracle/oradata/ora242/YM_tbs/tbs_sys_ptcl.ora' size 50M ;
自动扩展 alter tablespace tbs_sys_ptcl add datafile '/oracle/oradata/ora242/YM_tbs/tbs_sys_ptcl.ora' size 50M
autoextend on;
(2)临时表空间
指定大小:alter tablespace tbs_temp_ptcl add tempfile '/oracle/oradata/ora242/YM_tbs/tbs_temp_ptcl.dbf' size 50M;
自动扩展:alter tablespace tbs_temp_ptcl add tempfile '/oracle/oradata/ora242/YM_tbs/tbs_temp_ptcl.dbf' size 50M
autoextend on;


6. 删出用户及其表空间:
(1)删掉用户:
drop user lbi_sys_ptcl cascade;

(2)删掉表空间:
drop tablespace TBS_SYS_PTCL including contents and datafiles CASCADE CONSTRAINTS ;

(3)删掉数据文件:
alter database datafile '/oracle/oradata/ora242/YM_tbs/TBS_DW_YM.ora' offline drop;


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