由于源表过大，数据查询速度较慢，在做后台的相关查询的时候较慢，于是决定创建数据快照，提高查询速度，快照创建语句如下：
CREATE SNAPSHOT sn_ydmobilebank
REFRESH COMPLETE START WITH
to_date('2014-12-25 23:59:59','yyyy-mm-dd hh24:mi:ss')
NEXT SYSDATE + 1
AS
SELECT mobile,PLAN,cellbrand,cellmodel,os,jifen,arpu,wapflow,
cardnumber,bankname,cardtype
FROM base
运行一会后报错如下：
在百度上简单的查了一下，说是表空间不足，但是该怎么解决？
创建快照默认的表空间现在的属性如下：
不知道现在表空间的使用情况是怎样的~已用多少，还剩多少
------解决思路----------------------
--查询表空间使用情况
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')
------解决思路----------------------
'%' "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;
--查询表空间的free space
select tablespace_name,
count(*) as extends,
round(sum(bytes) / 1024 / 1024, 2) as MB,
sum(blocks) as blocks
from dba_free_space
group by tablespace_name;
--查询表空间的总容量
select tablespace_name, sum(bytes) / 1024 / 1024 as MB
from dba_data_files
group by 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)
------解决思路----------------------
'%' 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;
------解决思路----------------------
没有查询数据字典的权限，有两种方法解决
1、在sys用户下面执行查询语句
2、使用sys用户给表所属用户赋查询数据字典的权限
$ sqlplus / as sysdba
SQL> grant select any dictionary to USERNAME;