Oracle表領域の作成と監視(継続的な更新)

システムが表領域の説明を持参する

SYSTEM      # ， ， SYS 、 、 。
UNDOTBS1    # undo 
SYSAUX      # 
TEMP        # ， SQL 
USERS       # ， 

表領域を作成し、ユーザーに割り当てる

-- 
create tablespace SDA DATAFILE 'D:\WORK\ORACLE\ORADATA\ORCL\SDA.DBF' SIZE 10M;
-- 
alter database datafile 'D:\WORK\ORACLE\ORADATA\ORCL\SDA.DBF' autoextend on;
-- 
create user c##SDA identified by SDA default tablespace SDA;
-- 
grant dba to c##SDA;
grant connect to c##SDA;
grant resource to c##SDA;

-- 
--drop user c##SDA cascade;
-- 
--drop tablespace SDA including contents and datafiles;

表領域の使用状況の表示

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) "percent_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
-- 
SELECT UPPER(F.TABLESPACE_NAME) AS " ",
       ROUND(D.AVAILB_BYTES, 2) AS " (G)",
       ROUND(D.MAX_BYTES, 2) AS " (G)",
       ROUND((D.AVAILB_BYTES - F.USED_BYTES), 2) AS " (G)",
       TO_CHAR(ROUND((D.AVAILB_BYTES - F.USED_BYTES) / D.AVAILB_BYTES * 100,
                     2),
               '999.99') AS " ",
       ROUND(F.USED_BYTES, 6) AS " (G)",
       F.MAX_BYTES AS " (M)"
  FROM (SELECT TABLESPACE_NAME,
               ROUND(SUM(BYTES) / (1024 * 1024 * 1024), 6) USED_BYTES,
               ROUND(MAX(BYTES) / (1024 * 1024 * 1024), 6) MAX_BYTES
          FROM SYS.DBA_FREE_SPACE
         GROUP BY TABLESPACE_NAME) F,
       (SELECT DD.TABLESPACE_NAME,
               ROUND(SUM(DD.BYTES) / (1024 * 1024 * 1024), 6) AVAILB_BYTES,
               ROUND(SUM(DECODE(DD.MAXBYTES, 0, DD.BYTES, DD.MAXBYTES)) /
                     (1024 * 1024 * 1024),
                     6) MAX_BYTES
          FROM SYS.DBA_DATA_FILES DD
         GROUP BY DD.TABLESPACE_NAME) D
 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
 ORDER BY 4 DESC;
-- sql
SELECT A.TABLESPACE_NAME AS TABLESPACE_NAME,
       ROUND(A.BYTES / (1024 * 1024 * 1024), 2) AS "TOTAL(G)",
       ROUND(B.BYTES / (1024 * 1024 * 1024), 2) AS "USED(G)",
       ROUND(C.BYTES / (1024 * 1024 * 1024), 2) AS "FREE(G)",
       ROUND((B.BYTES * 100) / A.BYTES, 2) AS "% USED",
       ROUND((C.BYTES * 100) / A.BYTES, 2) AS "% FREE"
  FROM SYS.SM$TS_AVAIL A, SYS.SM$TS_USED B, SYS.SM$TS_FREE C
 WHERE A.TABLESPACE_NAME = B.TABLESPACE_NAME
   AND A.TABLESPACE_NAME = C.TABLESPACE_NAME;

表領域対応データファイルの表示

select file_name,
       tablespace_name,
       bytes / 1024 / 1024 "bytes MB",
       maxbytes / 1024 / 1024 "maxbytes MB",
       autoextensible,
       increment_by
  from dba_data_files
 where tablespace_name = 'SDA';

クエリー表領域の作成に関するSQL

select dbms_metadata.get_ddl('TABLESPACE', 'SDA') from dual;

  CREATE TABLESPACE "SDA" DATAFILE 
  'D:\WORK\ORACLE\ORADATA\ORCL\SDA.DBF' SIZE 10485760
  AUTOEXTEND ON NEXT 8192 MAXSIZE 32767M
  LOGGING ONLINE PERMANENT BLOCKSIZE 8192
  EXTENT MANAGEMENT LOCAL AUTOALLOCATE DEFAULT 
 NOCOMPRESS  SEGMENT SPACE MANAGEMENT AUTO
   ALTER DATABASE DATAFILE 
  'D:\WORK\ORACLE\ORADATA\ORCL\SDA.DBF' RESIZE 17571184640

ディスク容量が十分な場合にデータファイルを追加

-- 
alter tablespace SDA add 
datafile 'D:\WORK\ORACLE\ORADATA\ORCL\SDA_001.DBF' 
size 10M;
-- ， 
alter tablespace SDA add 
datafile 'D:\WORK\ORACLE\ORADATA\ORCL\SDA_001.DBF' 
size 10M autoextend on next 5M maxsize 1G;
-- 
alter DATABASE
datafile 'D:\WORK\ORACLE\ORADATA\ORCL\SDA_001.DBF' 
autoextend on next 5M maxsize 1G;
-- 
alter DATABASE
datafile 'D:\WORK\ORACLE\ORADATA\ORCL\SDA_001.DBF' 
RESIZE 1G;

 ：ORACLE db_block_size db_block 。
      db_block(ORACLE ) 2**22-1(4194303).
      = * 

増加が正しく確認されました

select file_name,
       tablespace_name,
       bytes / 1024 / 1024 "bytes MB",
       maxbytes / 1024 / 1024 "maxbytes MB",
       autoextensible,
       increment_by
  from dba_data_files
 where tablespace_name = 'SDA';

表領域のデータファイルの削除

alter tablespace SDA drop datafile 'D:\WORK\ORACLE\ORADATA\ORCL\SDA_001.DBF' 

データファイルの移行

windows

linux