oracle 扩表空间

创建表空间及用户授权

-- 创建临时表空间
create temporary tablespace 临时表空间 tempfile '/u01/app/oracle/oradata/orcl/ncepuketdata.dbf' size 100m autoextend on next 50m extent management local;


-- 创建表空间
create tablespace 表空间 logging datafile '/u01/app/oracle/oradata/orcl/ncepuket.dbf' size 200m autoextend on next 50m extent management local;



-- 在表空间下创建用户名
CREATE USER 用户名 IDENTIFIED BY 密码 DEFAULT TABLESPACE 表空间 TEMPORARY TABLESPACE 临时表空间名称;


-- 给用户授权
GRANT CONNECT,RESOURCE,DBA TO kettle;

 

查询数据存储文件路径

select t.username,t1.file_name from dba_users t,dba_data_files t1 where t.default_tablespace=t1.tablespace_name

 

查询表空间使用率

SELECT total.tablespace_name,
       Round(total.MB, 2)           AS Total_MB,
       Round(total.MB - free.MB, 2) AS Used_MB,
       Round(( 1 - free.MB / total.MB ) * 100, 2)
       || '%'                       AS Used_Pct
FROM   (SELECT tablespace_name,
               Sum(bytes) / 1024 / 1024 AS MB
        FROM   dba_free_space
        GROUP  BY tablespace_name) free,
       (SELECT tablespace_name,
               Sum(bytes) / 1024 / 1024 AS MB
        FROM   dba_data_files
        GROUP  BY tablespace_name) total
WHERE  free.tablespace_name = total.tablespace_name;

查看表空间使用情况

SELECT Upper(F.TABLESPACE_NAME)         "表空间名",
       D.TOT_GROOTTE_MB                 "表空间大小(M)",
       D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
       To_char(Round(( D.TOT_GROOTTE_MB - F.TOTAL_BYTES ) / D.TOT_GROOTTE_MB * 100, 2), '990.99')
       || '%'                           "使用比",
       F.TOTAL_BYTES                    "空闲空间(M)",
       F.MAX_BYTES                      "最大块(M)"
FROM   (SELECT TABLESPACE_NAME,
               Round(Sum(BYTES) / ( 1024 * 1024 ), 2) TOTAL_BYTES,
               Round(Max(BYTES) / ( 1024 * 1024 ), 2) MAX_BYTES
        FROM   SYS.DBA_FREE_SPACE
        GROUP  BY TABLESPACE_NAME) F,
       (SELECT DD.TABLESPACE_NAME,
               Round(Sum(DD.BYTES) / ( 1024 * 1024 ), 2) TOT_GROOTTE_MB
        FROM   SYS.DBA_DATA_FILES DD
        GROUP  BY DD.TABLESPACE_NAME) D
WHERE  D.TABLESPACE_NAME = F.TABLESPACE_NAME
ORDER  BY 1

查看表空间是否具有自动扩展的能力

SELECT T.TABLESPACE_NAME,D.FILE_NAME,     
D.AUTOEXTENSIBLE,D.BYTES,D.MAXBYTES,D.STATUS     
FROM DBA_TABLESPACES T,DBA_DATA_FILES D     
WHERE T.TABLESPACE_NAME =D.TABLESPACE_NAME     
 ORDER BY TABLESPACE_NAME,FILE_NAME;  

 

增加表空间大小的四种方法

Meathod1：给表空间增加数据文件

ALTER TABLESPACE app_data ADD DATAFILE

'D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP03.DBF' SIZE 50M;

Meathod2：新增数据文件，并且允许数据文件自动增长

 

ALTER TABLESPACE app_data ADD DATAFILE

'D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP04.DBF' SIZE 50M

AUTOEXTEND ON NEXT 5M MAXSIZE 100M;

1.  

Meathod3：允许已存在的数据文件自动增长

ALTER DATABASE DATAFILE 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP03.DBF'

AUTOEXTEND ON NEXT 5M MAXSIZE 100M;

Meathod4：手工改变已存在数据文件的大小

ALTER DATABASE DATAFILE 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\EDWTEST\APP02.DBF'

RESIZE 100M;