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一些让人忽略的oracle维护命令

时间:2021-07-01 10:21:17 帮助过:40人阅读

对象权限 select owner, table_name, grantor, privilege, grantable, hierarchy, 'TABLE' /*o.*/ object_type from dba_tab_privs p where p.grantee = 'HR' order by p.owner, p.table_name; 角色 select granted_role, admin_option, default_role from d

  对象权限

  select owner,

  table_name,

  grantor,

  privilege,

  grantable,

  hierarchy,

  'TABLE' /*o.*/ object_type

  from dba_tab_privs p

  where p.grantee = 'HR'

  order by p.owner, p.table_name;

  角色

  select granted_role, admin_option, default_role

  from dba_role_privs

  where grantee = 'HR'

  order by granted_role;

  系统权限

  select privilege, admin_option

  from dba_sys_privs

  where grantee = 'HR'

  order by privilege;

  表空间限额

  select * from dba_ts_quotas where username = 'SYSMAN' order by tablespace_name;

  用户或系统角色对应的权限

  select * from role_sys_privs where role = 'RESOURCE'

  数据库所有的系统权限名称

  select DISTINCT NAME from system_privilege_map t WHERE T.NAME LIKE '%SELECT%'

  df -h 磁盘空间使用率

  show parameter log_archive_format

  查看用户的概要文件

  select username, profile from dba_users where username='SCOTT';

  查看相应概要文件的各项设置

  select resource_name, limit from dba_profiles where profile = 'DEFAULT';

  修改相应的概要文件选项

  ALTER PROFILE "DEFAULT" LIMIT CONNECT_TIME 30; 最大连接时间30分钟

  ALTER PROFILE "DEFAULT" LIMIT FAILED_LOGIN_ATTEMPTS 3; 最大登录尝试次数 3次

  rman 启动自动备份控制文件功能

  show all;

  CONFIGURE CONTROLFILE AUTOBACKUP clear; #清除设置 恢复为默认值

  configure controlfile autobackup on; #设置为自动备份控制文件

  CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 30 DAYS; #修改保留策略为保留30天

  backup archivelog all; 备份归档日志

  backup tablespace users; 备份users表空间

  backup datafile 3; 备份数据文件

  backup incremental level 0 database; 零级备份

  backup incremental level 1 database; 一级差异增量

  backup incremental level 1 cumulative database format '/oradata/bak/dblevel1.bak'; 一级累计增量

  backup as compressed backupset datafile 4; 以压缩方式备份数据文件 4

  归档空间满时的处理办法

  rm *.arc 先用操作系统命令手工删除部分归档文件

  rman target /

  change archivelog all validate;

  delete noprompt expired archivelog all;

  RUN { EXECUTE SCRIPT b_whole_10; } 执行rman的脚本

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