关于oracle:识别表空间非扩展使用率并自动生成添加数据文件脚本

规定
能够依据以下规定调整为适宜本人应用的脚本。

辨认表空间 (非扩大) 使用率 >=90%，且残余可用空间 <=100000M;
辨认数据文件名中 \ 或 / 之前局部，作为数据文件门路（辨别 Windows 及 Linux）;
辨认了后缀名，然而增加应用应用了 ’.dbf’，标准；
辨认表空间对应数据文件序号的最大号，并以 ” 数据文件门路 ”+” 表空间名字 ”+” 已有数据文件名字数值最大号 +1″+”.dbf” 命名增加新文件；按公司要求，新加数据文件 1g 递增扩大到 24g;

WITH SUB_FILE AS
 (SELECT DISTINCT TABLESPACE_NAME AS TBS_NAME,
                  FILE_NAME,
                  REGEXP_SUBSTR(FILE_NAME, '^.*[\\|\/]') AS PREFIX,
                  -- 获取最初 1 个 '.' 及当前字符作为后缀名 SUFFIX
                  SUBSTR(FILE_NAME, INSTR(FILE_NAME, '.', -1)) AS SUFFIX,
                  -- 辨认最初一个 '.'(没有则从最初一位开始)后面 3 位为数字的局部，没有则指定默认值 '01'，有则截取数值局部作为数据文件编号 FN
                  NVL(REGEXP_SUBSTR(FILE_NAME,
                                    '[0-9]+',
                                    DECODE(INSTR(FILE_NAME, '.', -1),
                                           0,
                                           LENGTH(FILE_NAME) - 3,
                                           INSTR(FILE_NAME, '.', -1)) - 3,
                                    1),
                      01) AS FN
    FROM (SELECT TABLESPACE_NAME,
                 -- FILE_NAME 如果没有 '.' 标识的后缀，查问时增加 00.dbf 作为文件名，否则原样输入
                 DECODE(INSTR(FILE_NAME, '.', -1),
                        0,
                        FILE_NAME || '00.dbf',
                        FILE_NAME) AS FILE_NAME
            FROM DBA_DATA_FILES DDF
           WHERE TABLESPACE_NAME IN
                -- 过滤掉大文件表空间，它只能有一个数据文件
                 (SELECT TABLESPACE_NAME
                    FROM DBA_TABLESPACES
                   WHERE BIGFILE = 'NO')))
SELECT 'ALTER TABLESPACE' || SFL.TBS_NAME || 'ADD DATAFILE''' ||
       SFL.PREFIX || SFL.TBS_NAME || (TO_CHAR(SFL.FN + 1, 'FM9900')) ||
       '.dbf'' SIZE 1M AUTOEXTEND ON;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 1G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 2G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 3G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 4G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 5G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 6G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 7G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 8G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 9G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 10G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 11G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 12G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 13G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 14G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 15G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 16G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 17G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 18G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 19G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 20G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 21G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 22G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 23G;'|| CHR(10) ||'ALTER DATABASE DATAFILE ''' || SFL.PREFIX || SFL.TBS_NAME ||
       (TO_CHAR(SFL.FN + 1, 'FM9900')) || '.dbf'' RESIZE 24G;' AS COMMEND
  FROM SUB_FILE SFL
 WHERE (SFL.TBS_NAME, SFL.FN) IN
       (SELECT SF1.TBS_NAME, MAX(SF1.FN)
          FROM SUB_FILE SF1
         GROUP BY SF1.TBS_NAME)
   AND SFL.TBS_NAME IN
       (SELECT D.TABLESPACE_NAME
          FROM (SELECT TABLESPACE_NAME,
                       ROUND(SUM(BYTES) / (1024 * 1024), 2) SPACE
                  FROM DBA_DATA_FILES
                 GROUP BY TABLESPACE_NAME) D,
               (SELECT TABLESPACE_NAME,
                       ROUND(SUM(BYTES) / (1024 * 1024), 2) FREE_SPACE
                  FROM DBA_FREE_SPACE
                 GROUP BY TABLESPACE_NAME) F
         WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)
           AND ROUND((1 - NVL(F.FREE_SPACE, 0) / D.SPACE) * 100, 2) >= 90
           AND F.FREE_SPACE <= 100000);