exchange partition
logfileSQL> alter table t_part exchange partition t_p1 with table t_part1;Table altered SQL> alter table t_part exchange partition t_p2 with table t_part2;Table altered
RAC体系架构理解
1>CRS resoruce: NODEAPPS:GSD,ONS,VIP ,LISTENER. Database-Related Resource: Database ,Instance,service(racgimon来监控,启动,停止,切换) OCR content:1>system OCR-backup,CSS, CRS,local_only,ORA_CRS_HOME,evm.2>database ONS_HOST,DATABASE ,ASM,LOG,VIP_RANGE....
DBMS_SYSTEM包
dbms_system.get_env(var IN VARCHAR2, val OUT VARCHAR2) 这个过程返回ORACLE的环境变量例如:SQL> declare env varchar2(200); 2 begin 3 dbms_system.get_env('ORACLE_HOME',env); 4 dbms_output.put_line(env); 5 end;&nbs...
oracle 后台进程的理解笔记
PMON PMON,进程监视。PMON主要有3个用途: 1,在进程非正常中断后,做清理工作。例如:dedicated server失败了或者因为一些原因被杀死,这是PMON的工作分两种。第一,是对dedicated server所做的工作进行恢复或撤销。第二:是释放dedicated server占用的资源。PMON会把失败进程的未提交的工作进行rollback,释放...
链接收集
RAC 10G:http://www.itpub.net/thread-525469-1-1.html
ORACLE 内存结构理解.
UGA:USER SESSION STATE(including resource and security) and CURSOR_STATUS (running memory data,eg retrieve cursor data records).PGA: STACK SPACE,可选(sort area size,session_state,cursor_status)Large pool:MTS,parallel,部分备份和恢复,ORACLE XAMTS: ...
零散技术oracle
select *from v$sessionwhere paddr in (select addr from v$process where spid = (select b.oracle_process_id from apps.fnd_concurrent_requests b where b.request_id = &req_number)) select request_id from apps.fnd_concurrent...
oracle五大进程和server process介绍 (转载于jx_yu)
oracle必须的五大进程: SMON 系统监视进程 空间管理: 定期合并空间(老版本才有) 定期回收临时段 实例恢复: (如掉电导致实例意外终止) ...