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17.08.12

时间:2017-08-19 09:23:08      阅读:227      评论:0      收藏:0      [点我收藏+]

标签:time   client   ack   down   oba   channel   pass   group   png   

调度作业

 技术分享

 

$ ps -ef | grep cjq

SQL> show parameter job_queue_processes

后台预先设置的自动化管理作业:

 

自定义作业:

SQL> create table session_history(snap_time timestamp with local time zone, num_session number);

em中创建作业:

使用plsql块:

declare

  session_count  number;

begin

  select count(*) into session_count from v$session;

  insert into session_history values (systimestamp, session_count);

  commit;

end;

全球化支持

$ vi .bash_profile

#export NLS_LANG=american_america.AL32UTF8

#export NLS_DATE_FORMAT=‘yyyy-mm-dd hh24:mi:ss‘

$ unset NLS_LANG

$ unset NLS_DATE_FORMAT

SQL> select sysdate from dual;

 

Database:

Show parameter nls

 

Client:

.bash_profile

Export NLS_DATE_FORMAT=’yyyy-mm-dd’

 

Session:

Alter session set nls_date_format=’dd-mon yyyy’

只影响这一个窗口,在别的客户端上不起作用

 

Sql:

Select to_char(sysdate,’yyyy,month,dd’)from dual;

优先级别最高,影响范围最小,只影响单个语句

 

(影响范围越小,优先级别最高)

备份恢复

配置可恢复性

控制文件

SQL> show parameter control_files

SQL> select * from v$controlfile;

修改路径:

$ cd $ORACLE_HOME/dbs

$ cp spfileorcl.ora spfileorcl.ora.bak    备份

SQL> alter system set control_files=‘/u01/app/oracle/oradata/orcl/control01.ctl‘, ‘/home/oracle/control02.ctl‘ scope=spfile;    修改系统参数,静态参数修改需要重启

SQL> shutdown immediate

$ mv /u01/app/oracle/fast_recovery_area/orcl/control02.ctl /home/oracle/control02.ctl

SQL> startup

SQL> show parameter control_files

SQL> select * from v$controlfile;

增加镜像:

SQL> alter system set control_files=‘/u01/app/oracle/oradata/orcl/control01.ctl‘, ‘/home/oracle/control02.ctl‘, ‘/home/oracle/control03.ctl‘ scope=spfile;

SQL> shutdown immediate

$ cp /home/oracle/control02.ctl /home/oracle/control03.ctl

SQL> startup

SQL> show parameter control_files

SQL> select * from v$controlfile;

 

日志文件:

增加成员和日志组:

SQL> select GROUP#, SEQUENCE#, STATUS, MEMBERS from v$log;

SQL> select GROUP#, MEMBER from v$logfile;

SQL> alter database add logfile member ‘/home/oracle/redo01b.log‘ to group 1;

SQL> alter database add logfile member ‘/home/oracle/redo02b.log‘ to group 2;

SQL> alter database add logfile member ‘/home/oracle/redo03b.log‘ to group 3;

SQL> alter database add logfile group 4 (‘/u01/app/oracle/oradata/orcl/redo04.log‘, ‘/home/oracle/redo04b.log‘) size 50M;

 

FRA:

SQL> show parameter db_recovery

 

backupset: 10GB,  archived log: 5GB

 

10+5, 10G

 

开启归档模式:

SQL> archive log list         检查当前设置

SQL> shutdown immediate

SQL> startup mount

SQL> alter database archivelog;

SQL> alter database open;

SQL> archive log list

SQL> show parameter log_archive_dest

SQL> select group#, sequence#, status, archived from v$log;

SQL> alter system switch logfile;

SQL> select group#, sequence#, status, archived from v$log;

SQL> select NAME, SEQUENCE#, STATUS from v$archived_log;

$ ls /u01/app/oracle/fast_recovery_area/ORCL

RMAN配置

 技术分享

 

$ rman target /        或rman target sys/password@orcl

RMAN> show all;         查看系统里备份方面所有的设置

RMAN> CONFIGURE CONTROLFILE AUTOBACKUP On;

RMAN> CONFIGURE CONTROLFILE AUTOBACKUP clear;

RMAN> backup tablespace users;

RMAN> list backup;

SQL> desc v$backup_set         浏览器中也可以查看

 

自动通道管理:

RMAN> CONFIGURE DEVICE TYPE DISK PARALLELISM 2;

RMAN> backup tablespace users, example;

$ mkdir /home/oracle/disk1 /home/oracle/disk2

RMAN> configure channel 1 device type disk to destination ‘/home/oracle/disk1‘;

RMAN> configure channel 2 device type disk to destination ‘/home/oracle/disk2‘;

RMAN> backup tablespace users, example;

恢复默认

RMAN> CONFIGURE DEVICE TYPE DISK clear;

RMAN> CONFIGURE CHANNEL 1 device type disk clear;

RMAN> CONFIGURE CHANNEL 2 device type disk clear;

 

手动通道管理:

RMAN> run {

allocate channel c1 device type disk to destination ‘/home/oracle/disk1‘;

allocate channel c2 device type disk to destination ‘/home/oracle/disk2‘;

backup tablespace users, example;

backup (tablespace users channel c1)(tablespace example channel c2);

}

 

backup section size 500M datafile 1;

 

指定备份格式:

RMAN> backup tablespace users;

RMAN> backup as backupset tablespace users;

RMAN> backup as compressed backupset tablespace users;   压缩备份集

RMAN> backup as copy tablespace users;     镜像复制

RMAN> list backup of tablespace users;

RMAN> list copy of tablespace users;

17.08.12

标签:time   client   ack   down   oba   channel   pass   group   png   

原文地址:http://www.cnblogs.com/Zhang-x/p/7395281.html

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