oracle扩展表空间
1. 查看表空间的名字及文件所在的位置
select tablespace_name, file_id, file_name, round(bytes / (1024 * 1024), 0) total_space from sys.dba_data_files order by tablespace_name;
2. 指定表空间查看数据文件目录
select name from v$datafile where ts# in (select ts# from v$tablespace where name='USERS');
3. 查询表名,空间大小,已使用情况及闲余空间
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;
4. 指定表空间查看使用率
select b.tablespace_name "表空间",b.bytes/1024/1024 "大小M", (b.bytes-sum(nvl(a.bytes,0)))/1024/1024 "已使用M", substr((b.bytes-sum(nvl(a.bytes,0)))/(b.bytes)*100,1,5) "利用率" from dba_free_space a,dba_data_files b where a.file_id=b.file_id and b.tablespace_name='USERS' group by b.tablespace_name,b.file_name,b.bytes order by b.tablespace_name;
5. 查询表空间信息
select username,default_tablespace,t.* from dba_users t
6. 查询表空间使用情况
select a.tablespace_name, a.bytes / 1024 / 1024 "sum MB", (a.bytes - b.bytes) / 1024 / 1024 "used MB", b.bytes / 1024 / 1024 "free MB", round(((a.bytes - b.bytes) / a.bytes) * 100, 2) "used%" 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;
7. 查看剩余空间
select group_number,name,total_mb,free_mb from v$asm_diskgroup;
8. Oracle表空间扩容
表空间最大为:32GB alter database datafile '表空间位置' resize 新的尺寸 操作: 指定的路径由表空间位置所在 alter tablespace USERS add datafile '/u01/odata/db/ausers13.dbf' size 30G autoextend on; 例: +DATA/icdc/datafile/data.268.902365317 扩展空间 alter database datafile '+DATA' size 20G;
温馨提示:本文由自己记录,仅作参考,出了问题概不负责。。。。。