统计Oracle数据库文件的大小

1. 统计数据文件、临时文件、日志文件大小

select sum(bytes)/1024/1024/1024 as GB from dba_data_files;

select sum(bytes)/1024/1024/1024 as GB from dba_temp_files;

select sum(bytes)/1024/1024/1024 as GB from v$log;

2. 统计Oracle数据库文件占用空间

select sum(gb) total_gb
  from (select sum(bytes) / 1024 / 1024 / 1024 as gb
          from dba_data_files
        union all
        select sum(bytes) / 1024 / 1024 / 1024 as gb
          from dba_temp_files
        union all
        select sum(bytes) / 1024 / 1024 / 1024 as gb
          from v$log)