oracle 闪回总结

1:连接数据库
conn system/zqs520 as dba;
2:查看闪回功能是否开启
show parameter bin;
3:修改闪回功能
alter system set recyclebin=off;









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SQL语句:
表:
  select * from cat;
  select * from tab;
  select table_name from user_tables;
视图:
  select text from user_views where view_name=upper('&view_name');
索引:
  select index_name,table_owner,table_name,tablespace_name,status from user_indexes order by table_name;
触发器:
  select trigger_name,trigger_type,table_owner,table_name,status from user_triggers;
快照:
  select owner,name,master,table_name,last_refresh,next from user_snapshots order by owner,next;
同义词:
  select * from syn;
序列:
  select * from seq;
数据库链路:
  select * from user_db_links;
约束限制:
  select TABLE_NAME,CONSTRAINT_NAME,SEARCH_CONDITION,STATUS
from user_constraints WHERE TABLE_name=upper('&TABLE_Name');
本用户读取其他用户对象的权限:
  select * from user_tab_privs;
本用户所拥有的系统权限:
  select * from user_sys_privs;
用户:
  select * from all_users order by user_id;
表空间剩余自由空间情况:
  select tablespace_name,sum(bytes) 总字节数,max(bytes),count(*) from dba_free_space group by tablespace_name;
数据字典:
  select table_name from dict order by table_name;
锁及资源信息:
  select * from v$lock;不包括DDL锁
数据库字符集:
  select name,value$ from props$ where name='NLS_CHARACTERSET';
inin.ora参数:
  select name,value from v$parameter order by name;
SQL共享池:
  select sql_text from v$sqlarea;
数据库:
  select * from v$database
控制文件:
  select * from V$controlfile;
重做日志文件信息:
  select * from V$logfile;
来自控制文件中的日志文件信息:
  select * from V$log;
来自控制文件中的数据文件信息:
  select * from V$datafile;
NLS参数当前值:
  select * from V$nls_parameters;
ORACLE版本信息:
  select * from v$version;
描述后台进程:
  select * from v$bgprocess;
查看版本信息:
  select * from product_component_version;

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