• Oracle 查看表空间的大小及使用情况sql语句


    --1、查看表空间的名称及大小
    SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size
    FROM dba_tablespaces t, dba_data_files d
    WHERE t.tablespace_name = d.tablespace_name
    GROUP BY t.tablespace_name;
    --2、查看表空间物理文件的名称及大小
    SELECT tablespace_name,
    file_id,
    file_name,
    round(bytes / (1024 * 1024), 0) total_space
    FROM dba_data_files
    ORDER BY tablespace_name;
    --3、查看回滚段名称及大小
    SELECT segment_name,
    tablespace_name,
    r.status,
    (initial_extent / 1024) initialextent,
    (next_extent / 1024) nextextent,
    max_extents,
    v.curext curextent
    FROM dba_rollback_segs r, v$rollstat v
    WHERE r.segment_id = v.usn(+)
    ORDER BY segment_name;
    --4、查看控制文件
    SELECT NAME FROM v$controlfile;
    --5、查看日志文件
    SELECT MEMBER FROM v$logfile;
    --6、查看表空间的使用情况
    SELECT SUM(bytes) / (1024 * 1024) AS free_space, tablespace_name
    FROM dba_free_space
    GROUP BY tablespace_name;
    SELECT a.tablespace_name,
    a.bytes total,
    b.bytes used,
    c.bytes free,
    (b.bytes * 100) / a.bytes "% USED ",
    (c.bytes * 100) / a.bytes "% FREE "
    FROM sys.sm$ts_avail a, sys.sm$ts_used b, sys.sm$ts_free c
    WHERE a.tablespace_name = b.tablespace_name
    AND a.tablespace_name = c.tablespace_name;
    --7、查看数据库库对象
    SELECT owner, object_type, status, COUNT(*) count#
    FROM all_objects
    GROUP BY owner, object_type, status;
    --8、查看数据库的版本 
    SELECT version
    FROM product_component_version
    WHERE substr(product, 1, 6) = 'Oracle';
    --9、查看数据库的创建日期和归档方式
    SELECT created, log_mode, log_mode FROM v$database;

    --1G=1024MB
    --1M=1024KB
    --1K=1024Bytes
    --1M=11048576Bytes
    --1G=1024*11048576Bytes=11313741824Bytes
    SELECT a.tablespace_name "表空间名",
    total "表空间大小",
    free "表空间剩余大小",
    (total - free) "表空间使用大小",
    total / (1024 * 1024 * 1024) "表空间大小(G)",
    free / (1024 * 1024 * 1024) "表空间剩余大小(G)",
    (total - free) / (1024 * 1024 * 1024) "表空间使用大小(G)",
    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

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  • 原文地址:https://www.cnblogs.com/activiti/p/7575048.html
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