檢視臨時表空間使用情況,如何擴充套件表空間
SELECT D.TABLESPACE_NAME,SPACE "SUM_SPACE(M)",BLOCKS SUM_BLOCKS,
USED_SPACE "USED_SPACE(M)",ROUND(NVL(USED_SPACE,0)/SPACE*100,2) "USED_RATE(%)",
NVL(FREE_SPACE,0) "FREE_SPACE(M)"
FROM
(SELECT TABLESPACE_NAME,ROUND(SUM(BYTES)/(1024*1024),2) SPACE,SUM(BLOCKS) BLOCKS
FROM DBA_TEMP_FILES
GROUP BY TABLESPACE_NAME) D,
(SELECT TABLESPACE_NAME,ROUND(SUM(BYTES_USED)/(1024*1024),2) USED_SPACE,
ROUND(SUM(BYTES_FREE)/(1024*1024),2) FREE_SPACE
FROM V$TEMP_SPACE_HEADER
GROUP BY TABLESPACE_NAME) F
WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME(+)
當通過ORACLE中的create table ... as select 語句建立一張新表時，新表的資料量為比較大，如10億，這時SQL*Plus很可能就會提示“ORA-01653: ...”錯誤資訊。這個錯誤資訊暗示表空間大小不夠，需要為表空間增加資料檔案。
分析：
1. 查詢表空間剩餘位元組大小
SELECT TABLESPACE_NAME, SUM(BYTES)/1024/1024 AS "FREE SPACE(M)"
FROM DBA_FREE_SPACE
WHERE TABLESPACE_NAME = '&tablespace_name'
GROUP BY TABLESPACE_NAME;
SELECT TABLESPACE_NAME, FREE_SPACE/1024/1024 AS "FREE SPACE(M)"
FROM DBA_TEMP_FREE_SPACE
WHERE TABLESPACE_NAME = '&tablespace_name';
2. 如果不知道表空間資料檔案目錄規劃，可以先查詢出表空間所有資料檔案
SELECT TABLESPACE_NAME, FILE_ID, FILE_NAME, BYTES/1024/1024 AS "BYTES(M)"
FROM DBA_DATA_FILES
WHERE TABLESPACE_NAME = '&tablespace_name';
注：如果是臨時表空間，請查詢DBA_TEMP_FILES
SELECT TABLESPACE_NAME, FILE_ID, FILE_NAME, BYTES/1024/1024 AS "SPACE(M)"
FROM DBA_TEMP_FILES
WHERE TABLESPACE_NAME = '&tablespace_name';
3. 為空間不足的表空間增加資料檔案
ALTER TABLESPACE &tablespace_name ADD DATAFILE '&datafile_name' SIZE 2G;
注：如果要為臨時表空間擴容，使用下面的語句
ALTER TABLESPACE &tablespace_name ADD TEMPFILE '&datafile_name' SIZE 2G;