查看表空间使用情况

查看表空间使用情况

column tablespace_name format a20;

column avail format 999999999;

column used format 999999999;

column free format 999999999;

SELECT dts.tablespace_name, NVL(ddf.bytes / 1024 / 1024, 0) avail,

NVL(ddf.bytes - NVL(dfs.bytes, 0), 0)/1024/1024 used,

NVL(dfs.bytes / 1024 / 1024, 0) free,

TO_CHAR(NVL((ddf.bytes - NVL(dfs.bytes, 0)) / ddf.bytes * 100, 0), '990.00') "Used %"

FROM

dba_tablespaces dts,

(select tablespace_name, sum(bytes) bytes from dba_data_files group by tablespace_name) ddf,

(select tablespace_name, sum(bytes) bytes from dba_free_space group by tablespace_name) dfs

WHERE dts.tablespace_name = ddf.tablespace_name(+)

AND dts.tablespace_name = dfs.tablespace_name(+)

AND NOT (dts.extent_management like 'LOCAL' AND dts.contents like 'TEMPORARY')

order by 5;

查看数据文件大小

select file_name,tablespace_name,autoextensible,bytes/1024/1024/1024 from dba_data_files;

扩大表空间，添加数据文件

ALTER TABLESPACE "XXX"

ADD

DATAFILE '+DATA/XXX1.ora' SIZE 33554424K REUSE AUTOEXTEND

ON NEXT 1048576K MAXSIZE UNLIMITED;

可以一次同时增加多个数据文件

alter tablespace "XXX"

ADD

DATAFILE '+DATA/XXX1.ora' SIZE 33554424K REUSE AUTOEXTEND ON NEXT 1048576K MAXSIZE UNLIMITED,

'+DATA/XXX2.ora'' SIZE 33554424K REUSE AUTOEXTEND ON NEXT 1048576K MAXSIZE UNLIMITED;

回退方案：

删除所加数据文件

Alter tablespace XXX drop datafile '+DATA/XXX2.ora''

大文件表空间扩容：

ALTER TABLESPACE bigtbs RESIZE 10821G;

ASM磁盘组大小及剩余空间

set lines 150 pages 200

col path for a40

col HEADER_STATUS for a9

col disk_name for a12

col type for a16

col bytes for 999,999,999,999

col name for a52

col name2 for a15

col group_number heading 'Group|_NO' format 99

col file_number heading 'FILE|NO' format 9999

col redundancy format a6 noprint

col striped format a6 noprint

col FAILGROUP for a10

col disk_number heading 'Disk|_NO' format 9999

col MOUNT_STATUS heading 'Mount|_Status'

col FAILGROUP heading 'FAIL|_GROUP'

col TOTAL_MB heading 'Total|_MB' format 99,999,999

select name name2,state,type,free_mb,total_mb,usable_file_mb from v$asm_diskgroup;

ASM使用磁盘信息

select GROUP_NUMBER,free_mb,total_mb,FAILGROUP,disk_number,

MOUNT_STATUS,mode_status,STATE,HEADER_STATUS,name name2,PATH from v$asm_disk order by 4,5;

查看数据库内存分配情况

select component,current_size,min_size,max_size from v$memory_dynamic_components;