SQL 查询语句: SELECTt.tablespace_name,to_char((t.total_space-NVL(f.free_space,0)),'999,999')"USED (MB)",to_char(NVL(f.free_space,0),'999,999')"FREE (MB)",to_char(t.total_space,'999,999')"TOTAL (MB)",to_char((round((NVL(f.free_space,0)/t.total_space)*100)),999)...
(select tablespace_name, sum(bytes) total_bytes from dba_data_files group by tablespace_name) t, (select tablespace_name, sum(bytes) free_bytes from dba_free_space group by tablespace_name) f where t.tablespace_name = f.tablespace.name and t.tablespace_name in ('XXXXTablespaceName‘) ord...
(select tablespace_name, sum(bytes) bytes, max(bytes) largest from dba_free_space group by tablespace_name) b where a.tablespace_name = b.tablespace_name order by ((a.bytes - b.bytes) / a.bytes) desc
官方文档对于DBA_TABLESPACE_USAGE_METRICS的技术是:DBA_TABLESPACE_USAGE_METRICS describes tablespace usage metrics for all types of tablespaces, including permanent, temporary, and undo tablespaces.翻译过来是:DBA_TABLESPACE_USAGE_METRICS 描述了所有类型表空间的表空间使用指标...
视图中的USED_SPACE和TABLESPACE_SIZE的单位是block。默认情况下,oracle的每个block 是8k。 我们先查看DBA_TABLESPACE_USAGE_METRICS视图的创建代码: SQL> select * from v$version; BANNER --- Oracle Database 11g Enterprise EditionRelease 11.2.0.3.0 - 64bit Production PL/SQL Release 11.2.0.3.0 - Producti...
oracle 查询 tablespace 查询Oracle数据库中的表空间信息,通常可以使用数据字典视图DBA_TABLESPACES,USER_TABLESPACES或V$TABLESPACE。以下是一些基本的查询示例: 查询所有表空间的名称和其他相关信息: SELECTTABLESPACE_NAME,STATUS,CONTENTS,AUTOEXTENSIBLEFROMDBA_TABLESPACES;...
GRANT SELECT ON sys.dba_data_files TO datakit; GRANT SELECT ON DBA_TABLESPACES TO datakit; GRANT SELECT ON DBA_TABLESPACE_USAGE_METRICS TO datakit; GRANT SELECT ON DBA_USERS TO datakit; 注意:上述的 SQL 语句由于 Oracle 版本的原因部分可能会出现 "表不存在" 等错误,忽略即可。
SQL> select count(*) from v$open_cursor; 修改ORACLE最大游标数 SQL> alter system set open_cursors=1000 scope=both; 关闭密码过期 --1、查看用户的proifle是哪个,一般是default: (DBSNMP=》MONITORING_PROFILE) SELECT username,PROFILE FROM dba_users; ...
2. Oracle数据库中的表空间(Tablespace)是存储数据库对象的逻辑容器。(对/错) 答案:对 3.在Oracle中,使用TRUNCATE TABLE命令可以删除表中的数据,但不能删除表结构。(对/错) 答案:对 4. Oracle数据库中的视图(View)是一个虚拟表,它不存储数据。(对/错) 答案:对 5.在Oracle中,使用LIKE关键字可以进行大小写...
logical drives, Drive9 to Drive16. For SQL Server, the target database is striped onto eight file groups, each of which has one file on each drive. For Oracle, storage extents were preallocated across the eight drives, and the target table mapped to a tablespace, which spans the extents....