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http://rainbowbridg.itpub.net/post/23663/526560

oracle并行事务回滚1,目的：提升smon在instance recovery的回滚速度2,根据回滚的数据块大小,oracle smon自动决定启用多个个并行度进行回滚/******相关参数****/fast_start_parallel_rollback 1,取值有3种：fal...

/*******测试目的：dump命令是否在数据库各个启动阶段都可使用*******/SQL> select segment_name,header_file,header_block from dba_segments where segment_name='_SYSSMU1_2533871115$';SEGMENT_NAME &nbsp...

/*********oracle并行恢复的概念*************/       1,通过io并行化减少恢复时间2,对于数据文件存储在多个磁盘作用显著3,用于实例和介质恢复/**********oracle并行恢复相关的参数*...

/***********v$lock官方**************/http://docs.oracle.com/cd/E11882_01/server.112/e25513/dynviews_2027.htm#REFRN30121oracle lock------------------------------------------------------------------/*...

/*******产生一个事务*********/SQL> insert into t_ts values(1);1 row created./*******查询上述事务对应的回滚段头及文件******/SQL> select segment_name,header_file,header_block from dba_segments where s...

/****oracle11g之v$libcache_locks解决library cache lock及library cache pin的等待者及持锁者*******//******持锁会话*************/SQL> create or replace procedure proc_lib  2  authid current_us...

select replace(wm_concat('rps.'||nvl(dt.column_name,0)),',',' + ')  from dba_tab_columns dt, dba_col_comments dc where dt.table_name = 'REPORT_E_CHANNEL_SETTLEMENT'   and dt.TABLE_...

dsi401_block structure之(二)什么是坏损坏1,oracle读写块(buffer or disk)，肯定会进行一致性检查2,一致性检查内容：     1,block version --refer to block dump     2,...

http://dba-oracle.com/art_builder_bbw.htm

http://hoopercharles.wordpress.com/2012/04/04/failed-logon-attempts/

/**window平台可以用nul实现非真正导出dmp***linux or unix为/dev/null****/C:\Users\123>exp system/system@orcl file=nul full=yExport: Release 11.2.0.1.0 - Production on Wed Apr 3 17:19:14 2013Copyright ...

/***oracle dsi 401 block结构****/1,data block分成3部分：　　　cache layer      transaction layer      data layer      2,rowi...

/****oracle压力测试工具orion*****/http://blog.csdn.net/tianlesoftware/article/details/5965331http://www.2cto.com/database/201207/138315.html/***oracle rac测试******/http://wenku.baidu.com/view/46c92...

/***oracle archive一些视图****/--查看归档信息archive log listv$databasev$archived_log or rc_archived_log(if use recovery catalog)v$archive_destv$archive_processes --归档日志备份信息v$backup_redol...

/******flashback archive*****/http://docs.oracle.com/cd/E11882_01/server.112/e26088/statements_1008.htm#SQLRF20009http://docs.oracle.com/cd/E11882_01/server.112/e26088/statements_5010.htm#BABIAECC/*...

/***nbu配置案例******/http://wenku.baidu.com/view/a8640c2058fb770bf78a552b.html/********Nbu7.5安装_虚拟带库安装连接_备份测试********/http://wenku.baidu.com/view/74c6558c6529647d272852d6.html...