oracle里常用命令（三）

第十章：managing privileges

1.system privileges: view => system_privilege_map ,dba_sys_privs,session_privs

2.grant system privilege
sql> grant create session,create table to managers;
sql> grant create session to scott with admin option;
with admin option can grant or revoke privilege from any user or role;

3.sysdba and sysoper privileges:
sysoper: startup,shutdown,alter database open|mount,alter database backup controlfile,
alter tablespace begin/end backup,recover database
alter database archivelog,restricted session
sysdba: sysoper privileges with admin option,create database,recover database until

4.password file members: view:=> v$pwfile_users

5.O7_dictionary_accessibility =true restriction access to view or tables in other schema

6.revoke system privilege
sql> revoke create table from karen;
sql> revoke create session from scott;

7.grant object privilege
sql> grant execute on dbms_pipe to public;
sql> grant update(first_name,salary) on employee to karen with grant option;

8.display object privilege : view => dba_tab_privs, dba_col_privs

9.revoke object privilege
sql> revoke execute on dbms_pipe from scott [cascade constraints];

10.audit record view :=> sys.aud$

11. protecting the audit trail
sql> audit delete on sys.aud$ by access;

12.statement auditing
sql> audit user;

13.privilege auditing
sql> audit select any table by summit by access;

14.schema object auditing
sql> audit lock on summit.employee by access whenever successful;

15.view audit option : view=> all_def_audit_opts,dba_stmt_audit_opts,dba_priv_audit_opts,dba_obj_audit_opts

16.view audit result: view=> dba_audit_trail,dba_audit_exists,dba_audit_object,dba_audit_session,dba_audit_statement

第十一章： manager role

1.create roles
sql> create role sales_clerk;
sql> create role hr_clerk identified by bonus;
sql> create role hr_manager identified externally;

2.modify role
sql> alter role sales_clerk identified by commission;
sql> alter role hr_clerk identified externally;
sql> alter role hr_manager not identified;

3.assigning roles
sql> grant sales_clerk to scott;
sql> grant hr_clerk to hr_manager;
sql> grant hr_manager to scott with admin option;

4.establish default role
sql> alter user scott default role hr_clerk,sales_clerk;
sql> alter user scott default role all;
sql> alter user scott default role all except hr_clerk;
sql> alter user scott default role none;

5.enable and disable roles
sql> set role hr_clerk;
sql> set role sales_clerk identified by commission;
sql> set role all except sales_clerk;
sql> set role none;

6.remove role from user
sql> revoke sales_clerk from scott;
sql> revoke hr_manager from public;

7.remove role
sql> drop role hr_manager;

8.display role information
view: =>dba_roles,dba_role_privs,role_role_privs,dba_sys_privs,role_sys_privs,role_tab_privs,session_roles

第十二章: BACKUP and RECOVERY

1. v$sga,v$instance,v$process,v$bgprocess,v$database,v$datafile,v$sgastat

2. Rman need set dbwr_IO_slaves or backup_tape_IO_slaves and large_pool_size

3. Monitoring Parallel Rollback
> v$fast_start_servers , v$fast_start_transactions

4.perform a closed database backup (noarchivelog)
> shutdown immediate
> cp files /backup/
> startup

5.restore to a different location
> connect system/manager as sysdba
> startup mount
> alter database rename file '/disk1/../user.dbf' to '/disk2/../user.dbf';
> alter database open;

6.recover syntax
--recover a mounted database
>recover database;
>recover datafile '/disk1/data/df2.dbf';
>alter database recover database;
--recover an opened database
>recover tablespace user_data;
>recover datafile 2;
>alter database recover datafile 2;

7.how to apply redo log files automatically
>set autorecovery on
>recover automatic datafile 4;

8.complete recovery:
--method 1(mounted databae)
>copy c:\backup\user.dbf c:\oradata\user.dbf
>startup mount
>recover datafile 'c:\oradata\user.dbf;
>alter database open;
--method 2(opened database,initially opened,not system or rollback datafile)
>copy c:\backup\user.dbf c:\oradata\user.dbf (alter tablespace offline)
>recover datafile 'c:\oradata\user.dbf' or
>recover tablespace user_data;
>alter database datafile 'c:\oradata\user.dbf' online or
>alter tablespace user_data online;
--method 3(opened database,initially closed not system or rollback datafile)
>startup mount
>alter database datafile 'c:\oradata\user.dbf' offline;
>alter database open
>copy c:\backup\user.dbf d:\oradata\user.dbf
>alter database rename file 'c:\oradata\user.dbf' to 'd:\oradata\user.dbf'
>recover datafile 'e:\oradata\user.dbf' or recover tablespace user_data;
>alter tablespace user_data online;
--method 4(loss of data file with no backup and have all archive log)
>alter tablespace user_data offline immediate;
>alter database create datafile 'd:\oradata\user.dbf' as 'c:\oradata\user.dbf''
>recover tablespace user_data;
>alter tablespace user_data online
5.perform an open database backup
> alter tablespace user_data begin backup;
> copy files /backup/
> alter database datafile '/c:/../data.dbf' end backup;
> alter system switch logfile;
6.backup a control file
> alter database backup controlfile to 'control1.bkp';
> alter database backup controlfile to trace;
7.recovery (noarchivelog mode)
> shutdown abort
> cp files
> startup
8.recovery of file in backup mode
>alter database datafile 2 end backup;

9.clearing redo log file
>alter database clear unarchived logfile group 1;
>alter database clear unarchived logfile group 1 unrecoverable datafile;

10.redo log recovery
>alter database add logfile group 3 'c:\oradata\redo03.log' size 1000k;
>alter database drop logfile group 1;
>alter database open;
or >cp c:\oradata\redo02.log' c:\oradata\redo01.log
>alter database clear logfile 'c:\oradata\log01.log';