oracle 剩余表空间查询
时间: 2023-07-26 08:45:52 浏览: 55
你可以使用以下 SQL 语句查询 Oracle 数据库的剩余表空间:
```
SELECT tablespace_name, SUM(bytes)/1024/1024 AS free_space_mb
FROM dba_free_space
GROUP BY tablespace_name;
```
这将返回每个表空间的名称和剩余空间(以兆字节为单位)。请注意,您需要具有 `DBA` 权限才能运行此查询。
相关问题
Oracle查询表空间剩余
你可以使用以下SQL查询来获取Oracle数据库中表空间的剩余空间:
```
SELECT tablespace_name, round((max_size - current_size) / 1024 / 1024, 2) AS free_space_mb
FROM (
SELECT tablespace_name, SUM(bytes) / 1024 / 1024 AS current_size
FROM dba_data_files
GROUP BY tablespace_name
) t1,
(
SELECT tablespace_name, SUM(bytes) / 1024 / 1024 AS max_size
FROM dba_temp_files
GROUP BY tablespace_name
) t2
WHERE t1.tablespace_name = t2.tablespace_name;
```
这个查询将返回每个表空间的名称和剩余空间(以MB为单位)。请注意,你需要具有适当的权限才能运行这个查询,例如`SELECT`权限在`DBA_DATA_FILES`和`DBA_TEMP_FILES`视图上。
oracle查看剩余表空间
你可以使用以下SQL语句查看Oracle数据库中的剩余表空间:
```
SELECT tablespace_name, SUM(bytes)/1024/1024 AS "Total Size (MB)", SUM(bytes-free_bytes)/1024/1024 AS "Used Size (MB)", SUM(free_bytes)/1024/1024 AS "Free Size (MB)"
FROM (SELECT tablespace_name, bytes, SUM(CASE WHEN block_id + blocks = next_block_id THEN 0 ELSE next_block_id - block_id END * block_size) AS free_bytes
FROM (SELECT tablespace_name, file_id, block_id, blocks, block_size, LEAD(block_id) OVER (PARTITION BY tablespace_name, file_id ORDER BY block_id) AS next_block_id
FROM dba_extents)
GROUP BY tablespace_name, bytes)
GROUP BY tablespace_name;
```
这条SQL语句将返回每个表空间的名称、总大小、已用空间和剩余空间。你可以在Oracle SQL Developer或SQL Plus等工具中运行此SQL语句。