Linux LVM+RAW设备 表空间可用空间测试

Linux LVM+RAW设备 表空间可用空间测试

本文主要验证lvm+raw设备 表空间的最大可用空间大小

--1.建表空间之前的准备,/dev/raw/raw14大小为8M
[Oracle@master ~]$ ln -s /dev/raw/raw14 /oracle/oradata/rawt/test01.dbf

--2.创建表空间
SQL> create tablespace test
datafile '/oracle/oradata/rawt/test01.dbf' size 2M
autoextend on;

--3.查看文件大小，并插入数据直到空间不足
SQL> select bytes/1024/1024,maxbytes/1024/1024 from dba_data_files where file_id=5;

BYTES/1024/1024 MAXBYTES/1024/1024
--------------- ------------------
2 32767.9844 --创建表空间时，没有指定最大值，这个地方为约32G

SQL>
SQL>
SQL>
SQL>
SQL> select count(*) from dba_objects;

COUNT(*)
----------
50032

SQL> create table t (id int,name varchar2(20)) tablespace test;

Table created.

SQL> insert into t select rownum,'1111111111' from dba_objects where rownum<50000;

49999 rows created.

SQL> commit;

Commit complete.

SQL> insert into t select rownum,'1111111111' from dba_objects where rownum<50000;

49999 rows created.

SQL> commit;

Commit complete.

SQL> insert into t select rownum,'1111111111' from dba_objects where rownum<50000;

49999 rows created.

SQL> insert into t select rownum,'1111111111' from dba_objects where rownum<50000;

49999 rows created.

SQL> insert into t select rownum,'1111111111' from dba_objects where rownum<50000;

49999 rows created.

SQL> insert into t select rownum,'1111111111' from dba_objects where rownum<50000;
insert into t select rownum,'1111111111' from dba_objects where rownum<50000
*
ERROR at line 1:
ORA-01653: unable to extend table SYS.T by 128 in tablespace TEST

SQL> commit;

Commit complete.