Oracle数据库扩容

1、查询使用率

SELECT a.tablespace_name "表空间名",
       total/1024/1024  "表空间大小单位M",
       free/1024/1024 "表空间剩余大小单位M",
       (total - free)/1024/1024 "表空间使用大小单位M",
       Round((total - free) / total, 4) * 100 "使用率   [[%]]"FROM 
       (SELECT tablespace_name,Sum(bytes) free FROM DBA_FREE_SPACE GROUP BY tablespace_name) a,
       (SELECT tablespace_name,
               Sum(bytes) total FROM DBA_DATA_FILES GROUP BY tablespace_name) b WHERE a.tablespace_name = b.tablespace_name;

2、查询是否自动扩容

select tablespace_name,file_name,autoextensible from dba_data_files;

3、如果单文件超出32GB，加文件扩容

ALTER TABLESPACE SYSTEM ADD DATAFILE 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\SYSTEM02.DBF' 
SIZE 50M AUTOEXTEND ON NEXT 5M MAXSIZE 31G;