05_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$rollstatvWHEREr.segmen{t}_{i}d=v.usn(+)ORDERBYsegmen{t}_{n}ame;\ast \ast --4、查看控制文件\ast \ast SELECTNAMEFROMv$controlfile;
–5、查看日志文件
SELECT MEMBER FROM v$logfile;--6、查看表空间的使用情况SELECTSUM(bytes)/(1024\ast 1024)ASfre{e}_{s}pace,tablespac{e}_{n}ameFROMdb{a}_{f}re{e}_{s}paceGROUPBYtablespac{e}_{n}ame;SELECTa.tablespac{e}_{n}ame,a.bytestotal,b.bytesused,c.bytesfree,(b.bytes\ast 100)/a.bytes"(c.bytes\ast 100)/a.bytes"FROMsys.sm$ts_avail a, sys.sm$t{s}_{u}sedb,sys.sm$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;

SQL2:
复制代码 代码如下:

–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