DM8表空间创建、使用、删除

几个关于表空间与数据文件重要视图
dba_tablespaces; v$tablespace; dba_data_files  v$datafile;
SQL> desc dba_tablespaces; 

LINEID     NAME            TYPE$        NULLABLE
---------- --------------- ------------ --------
1          TABLESPACE_NAME VARCHAR(128) Y
2          BLOCK_SIZE      BIGINT       Y
3          INITIAL_EXTENT  VARCHAR(1)   Y
4          NEXT_EXTENT     VARCHAR(1)   Y
5          MIN_EXTENTS     VARCHAR(1)   Y
6          MAX_EXTENTS     VARCHAR(1)   Y
7          MAX_SIZE        BIGINT       Y
8          PCT_INCREASE    VARCHAR(1)   Y
9          MIN_EXTLEN      VARCHAR(1)   Y
10         STATUS          INTEGER      Y
11         CONTENTS        VARCHAR(9)   Y
12         LOGGING                  VARCHAR(1) Y
13         FORCE_LOGGING            VARCHAR(1) Y
14         EXTENT_MANAGEMENT        VARCHAR(1) Y
15         ALLOCATION_TYPE          VARCHAR(1) Y
16         PLUGGED_IN               VARCHAR(1) Y
17         SEGMENT_SPACE_MANAGEMENT VARCHAR(1) Y
18         DEF_TAB_COMPRESSION      VARCHAR(8) Y
19         RETENTION                VARCHAR(1) Y
20         BIGFILE                  VARCHAR(1) Y
21         PREDICATE_EVALUATION     VARCHAR(1) Y
22         ENCRYPTED                VARCHAR(1) Y

23         COMPRESS_FOR VARCHAR(1) Y

23 rows got

used time: 15.647(ms). Execute id is 64.
SQL> 
SQL> desc v$tablespace;

LINEID     NAME          TYPE$        NULLABLE
---------- ------------- ------------ --------
1          ID            INTEGER      Y
2          NAME          VARCHAR(128) Y
3          CACHE         VARCHAR(20)  Y
4          TYPE$         TINYINT      Y
5          STATUS$       TINYINT      Y
6          MAX_SIZE      BIGINT       Y
7          TOTAL_SIZE    BIGINT       Y
8          FILE_NUM      INTEGER      Y
9          ENCRYPT_NAME  VARCHAR(128) Y
10         ENCRYPTED_KEY VARCHAR(500) Y
11         COPY_NUM      INTEGER      Y
12         SIZE_MODE VARCHAR(128) Y

12 rows got

used time: 6.468(ms). Execute id is 67.
SQL> 
SQL> 
SQL> 
SQL> desc dba_data_files

LINEID     NAME            TYPE$        NULLABLE
---------- --------------- ------------ --------
1          FILE_NAME       VARCHAR(256) Y
2          FILE_ID         INTEGER      Y
3          TABLESPACE_NAME VARCHAR(128) Y
4          BYTES           BIGINT       Y
5          BLOCKS          BIGINT       Y
6          STATUS          VARCHAR(9)   Y
7          RELATIVE_FNO    INTEGER      Y
8          AUTOEXTENSIBLE  VARCHAR(9)   Y
9          MAXBYTES        NUMBER       Y
10         MAXBLOCKS       INTEGER      Y
11         INCREMENT_BY    INTEGER      Y
12         USER_BYTES    BIGINT     Y
13         USER_BLOCKS   BIGINT     Y
14         ONLINE_STATUS VARCHAR(9) Y

14 rows got

used time: 10.466(ms). Execute id is 65.
SQL> 

SQL> desc v$datafile;

LINEID     NAME           TYPE$        NULLABLE
---------- -------------- ------------ --------
1          GROUP_ID       INTEGER      Y
2          ID             INTEGER      Y
3          PATH           VARCHAR(256) Y
4          CLIENT_PATH    VARCHAR(256) Y
5          CREATE_TIME    DATETIME(0)  Y
6          STATUS$        TINYINT      Y
7          RW_STATUS      TINYINT      Y
8          LAST_CKPT_TIME DATETIME(0)  Y
9          MODIFY_TIME    DATETIME(0)  Y
10         MODIFY_TRX     BIGINT       Y
11         TOTAL_SIZE     BIGINT       Y
12         FREE_SIZE     BIGINT       Y
13         FREE_PAGE_NO  BIGINT       Y
14         PAGES_READ    BIGINT       Y
15         PAGES_WRITE   BIGINT       Y
16         PAGE_SIZE     INTEGER      Y
17         READ_REQUEST  INTEGER      Y
18         WRITE_REQUEST INTEGER      Y
19         AUTO_EXTEND   INTEGER      Y
20         MAX_SIZE      INTEGER      Y
21         NEXT_SIZE     INTEGER      Y
22         MIRROR_PATH   VARCHAR(256) Y

22 rows got

used time: 7.156(ms). Execute id is 68.
SQL> 

查询表空间名称
SQL> select tablespace_name from dba_tablespaces;

LINEID     TABLESPACE_NAME
---------- ---------------
1          SYSTEM
2          ROLL
3          TEMP
4          MAIN
5          HMAIN

used time: 2.326(ms). Execute id is 69.

查询表空间与数据文件关联的位置
SQL> select tablespace_name, file_name, status from dba_data_files order by 1;

LINEID     TABLESPACE_NAME FILE_NAME                         STATUS   
---------- --------------- --------------------------------- ---------
1          MAIN            /dm/dmdbms/data/DAMENG/MAIN.DBF   AVAILABLE
2          ROLL            /dm/dmdbms/data/DAMENG/ROLL.DBF   AVAILABLE
3          SYSTEM          /dm/dmdbms/data/DAMENG/SYSTEM.DBF AVAILABLE
4          TEMP            /dm/dmdbms/data/DAMENG/TEMP.DBF   AVAILABLE

used time: 3.375(ms). Execute id is 70.
SQL> 

创建表空间
SQL> create tablespace test datafile '/dm/dmdbms/data/DAMENG/test01.DBF' size 64;
executed successfully
used time: 47.240(ms). Execute id is 71.

查看创建结果

SQL>  select tablespace_name, file_name, status,bytes/1024/1024 from dba_data_files order by 1;

LINEID     TABLESPACE_NAME FILE_NAME                         STATUS    BYTES/1024/1024     
---------- --------------- --------------------------------- --------- --------------------
1          MAIN            /dm/dmdbms/data/DAMENG/MAIN.DBF   AVAILABLE 128
2          ROLL            /dm/dmdbms/data/DAMENG/ROLL.DBF   AVAILABLE 128
3          SYSTEM          /dm/dmdbms/data/DAMENG/SYSTEM.DBF AVAILABLE 23
4          TEMP            /dm/dmdbms/data/DAMENG/TEMP.DBF   AVAILABLE 10
5          TEST            /dm/dmdbms/data/DAMENG/test01.DBF AVAILABLE 64

used time: 3.343(ms). Execute id is 74.

扩展表空间

SQL> alter tablespace test add datafile '/dm/dmdbms/data/DAMENG/test02.DBF' size 32;
executed successfully
used time: 23.449(ms). Execute id is 75.
SQL> select tablespace_name, file_name, status,bytes/1024/1024 from dba_data_files order by 1;

LINEID     TABLESPACE_NAME FILE_NAME                         STATUS    BYTES/1024/1024     
---------- --------------- --------------------------------- --------- --------------------
1          MAIN            /dm/dmdbms/data/DAMENG/MAIN.DBF   AVAILABLE 128
2          ROLL            /dm/dmdbms/data/DAMENG/ROLL.DBF   AVAILABLE 128
3          SYSTEM          /dm/dmdbms/data/DAMENG/SYSTEM.DBF AVAILABLE 23
4          TEMP            /dm/dmdbms/data/DAMENG/TEMP.DBF   AVAILABLE 10
5          TEST            /dm/dmdbms/data/DAMENG/test01.DBF AVAILABLE 64
6          TEST            /dm/dmdbms/data/DAMENG/test02.DBF AVAILABLE 32

6 rows got

used time: 3.343(ms). Execute id is 76.
SQL> 

修改表空间名称 

SQL> alter tablespace test rename to jisen;
executed successfully
used time: 11.021(ms). Execute id is 77.
SQL> select tablespace_name, file_name, status,bytes/1024/1024 from dba_data_files order by 1;

LINEID     TABLESPACE_NAME FILE_NAME                         STATUS    BYTES/1024/1024     
---------- --------------- --------------------------------- --------- --------------------
1          JISEN           /dm/dmdbms/data/DAMENG/test01.DBF AVAILABLE 64
2          JISEN           /dm/dmdbms/data/DAMENG/test02.DBF AVAILABLE 32
3          MAIN            /dm/dmdbms/data/DAMENG/MAIN.DBF   AVAILABLE 128
4          ROLL            /dm/dmdbms/data/DAMENG/ROLL.DBF   AVAILABLE 128
5          SYSTEM          /dm/dmdbms/data/DAMENG/SYSTEM.DBF AVAILABLE 23
6          TEMP            /dm/dmdbms/data/DAMENG/TEMP.DBF   AVAILABLE 10

6 rows got

used time: 1.706(ms). Execute id is 78.
SQL> 


移动数据文件位置
SQL> alter tablespace jisen offline;
executed successfully
used time: 89.413(ms). Execute id is 79.
SQL> alter tablespace jisen rename datafile '/dm/dmdbms/data/DAMENG/test01.DBF' TO '/dm/dmdbms/data/test01.DBF';
executed successfully
used time: 196.679(ms). Execute id is 80.
SQL> select tablespace_name, file_name, status,bytes/1024/1024 from dba_data_files order by 1;

LINEID     TABLESPACE_NAME FILE_NAME                         STATUS    BYTES/1024/1024     
---------- --------------- --------------------------------- --------- --------------------
1          JISEN           /dm/dmdbms/data/test01.DBF        AVAILABLE 64
2          JISEN           /dm/dmdbms/data/DAMENG/test02.DBF AVAILABLE 32
3          MAIN            /dm/dmdbms/data/DAMENG/MAIN.DBF   AVAILABLE 128
4          ROLL            /dm/dmdbms/data/DAMENG/ROLL.DBF   AVAILABLE 128
5          SYSTEM          /dm/dmdbms/data/DAMENG/SYSTEM.DBF AVAILABLE 23
6          TEMP            /dm/dmdbms/data/DAMENG/TEMP.DBF   AVAILABLE 10

6 rows got
 alter tablespace jisen online;
executed successfully

移动是自动的
[dmdba@dm1 ~]$ cd /dm/dmdbms/data/
[dmdba@dm1 data]$ ll
total 65540
drwxr-xr-x. 6 dmdba dinstall     4096 Mar  2 14:35 DAMENG
-rw-r--r--  1 dmdba dinstall 67108864 Mar  2 14:34 test01.DBF

可以看到默认情况下，是自增模式，最大为16TB。这个跟Oracle单个文件有点不一样。

SQL> drop tablespace jisen;
executed successfully
used time: 99.385(ms). Execute id is 87.