1、为表空间增加新的数据文件
alter tablespace ibomis
add datafile 'D:\app\Administrator\oradata\IBOMISWC\ibomis02.DBF' size 20000m
autoextend on
next 100m
maxsize unlimited
2、增加表空间原有数据文件大小
alter database datafile '/opt/oracle/oradata/esop/so_data01.dbf' resize 200M;
3、查询表空间使用情况
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$ts_free c
WHERE a.tablespace_name = b.tablespace_name
AND a.tablespace_name = c.tablespace_name;
4、查看数据库版本
SELECT version
FROM product_component_version
WHERE substr(product, 1, 6) = 'Oracle';
5、查看数据库创建日期和归档模式
SELECT created, log_mode, log_mode FROM v$database;
6、查看数据库对象
SELECT owner, object_type, status, COUNT(*) count#
FROM all_objects
GROUP BY owner, object_type, status;
7、查看日志文件
SELECT MEMBER FROM v$logfile;
8、查看控制文件
SELECT NAME FROM v$controlfile;
9、查看回滚段名称和大小
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;
10、查看表空间物理文件名称和大小
SELECT tablespace_name,
file_id,
file_name,
round(bytes / (1024 * 1024), 0) total_space
FROM dba_data_files
ORDER BY tablespace_name;
11、查看表空间名称和大小
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;
转播
