select DEST_ID, APPLIED_SCN FROM v$archive_dest select * from v$dataguard_status; SELECT gvi.thread#, timestamp, message FROM gv$dataguard_status gvds, gv$instance gvi WHERE gvds.inst_id = gvi.inst_id AND severity in ('Error','Fatal') ORDER BY timest
oracle表设计 http://blog.csdn.net/lanpy88/article/details/7580820 Oracle查看所有表和字段 获取表: select table_name from user_tables; //当前用户的表 select table_name from all_tables; //所有用户的表 select table_name from dba_tables; //包括系统表 select table_name from dba_tables w
select a.constraint_name, a.table_name, b.constraint_name from user_constraints a, user_constraints b where a.constraint_type = 'R' and b.constraint_type = 'P' and a.r_constraint_name = b.constraint_name -- P 代表主键, R 代表外键 查询某一张表的约束: select constrai
查看mysql库中所有表的大小和记录数 ,), 'MB') as total_size FROM information_schema.TABLES WHERE TABLE_SCHEMA='database_name' order by length desc 结果: +------------------------------+-------------+--------------+------------+------------+------------+| TABLE_NAME |
-- 查看被锁对象 select object_name,machine,s.sid,s.serial# from v$locked_object l,dba_objects o ,v$session s where l.object_id = o.object_id and l.session_id=s.sid; --杀死进程 alter system kill session '24,111'; (其中24,111分别是上面查询出的sid,serial# ora-00031:session
在上篇ORACLE查看表空间对象中,我介绍了如何查询一个表空间有那些数据库对象,那么我们是否可以查看某个数据文件包含那些数据库对象呢?如下所示 SELECT E.SEGMENT_TYPE AS SEGMENT_TYPE , E.SEGMENT_NAME AS SEGMENT_NAME , F.FILE_NAME AS FILE_NAME , SUM(E.BYTES)/1024/1024 AS SE
查看所有库的大小 mysql> use information_schema; Database changed mysql> selectconcat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES; +----------+ | data | +----------+ | 104.21MB | +----------+ 1 row in set (0.11 sec) 查看指定库的大小 mysql> s
SQL手工注入 靶机:metasploitable(低) 1.当无权读取infomation_schema库[MySQL最重要的源数据库,必须有root权限]/拒绝union.order by语句 #若不为root a.猜列名: ' and coclumn is null--+ [并且列有一个字段为空,正常执行,若没有空字段,且该列存在,返回空白内容:若列不存在,则报错](可确定语句可插入数据库运行) 例如:' and asd is null--+ 使用kali集成的字典
