oracle数字开头表空间创建及含lob字段表统计

1、创建时加上双引号create tablespace "320DB" datafile '/u01/app/oracle/oradata/orcltwo/data01.dbf' size 30G;alter tablespace "320DB" add datafile '/u01/app/oracle/oradata/orcltwo/data02.dbf' size 30G

2、赋予用户默认表空间时也要加上SQL> create user zxx identified by zxx default tablespace "320DB";SQL> grant connect,dba to zxx;

3、统计大数据segmentselect * from ( select sum(bytes)/1024/1024/1024 sizem,segment_name,segment_type from dba_segments where owner='SA' --and segment_type like 'TABLE%' group by segment_name,segment_type ) a where a.sizem > 1统计大于1G的所有segment注意：索引、表、lob都属于segment

4、确认大的lobsegment属于哪个表因为需要expdp 出部分数据作为测试，肯定需要排除哪些表不需要导出的。那么如何确认哪些大的lobsegment属于哪个表，及哪个表的字段？select * from dba_lobs where owner='SA' and segment_namein(select segment_name from (select sum(bytes)/1024/1024/1024 sizem,segment_name,segment_typefrom dba_segments where owner='SA'--and segment_type like 'TABLE%'group by segment_name,segment_type) a where a.sizem > 1 and a.segment_type='LOBSEGMENT')统计大于1G的所有lobsegment所属表及字段。

5、统计某用户所有含lob字段的表select distinct table_name from dba_lobs where owner='SA'