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01 2010 档案

Know more about _in_memory_undo
摘要：set parameter _in_memory_undo = FALSE to disable IMUWorkaround: Disable IMU (set _in_memory_undo=FALSE)PLEASE NOTE: This bug applies to single instance databases and not RAC as IMU is not enabled in... 阅读全文

posted @ 2010-01-17 05:31 Oracle和MySQL 阅读(215) 评论(0) 推荐(0) 编辑

Know more about Oracle Nologging
摘要：The NOLOGGING clause doesn't prevent redo on all operations, but rather only on a subset. I searched the documentation for examples of this...http://st-doc.us.oracle.com/11/112/server.112/e16541/paral... 阅读全文

posted @ 2010-01-14 04:57 Oracle和MySQL 阅读(173) 评论(0) 推荐(0) 编辑

Would It affect RAC clusterware and database If we adjust OS time/Clock?
摘要：Question:在RAC环境中节点之间的OS操作系统时钟一致是clusterware能够稳定运行的重要因素之一，但是如果我们确实有调整OS时间的需求，那么是否真的会影响到RAC的正常运行呢？ 具体的影响是如何的呢？ 又需要注意哪些方面的因素呢？Answer:RAC: Frequently Asked Questions (Doc ID 220970.1)Does Oracle RAC work... 阅读全文

posted @ 2010-01-13 07:24 Oracle和MySQL 阅读(319) 评论(0) 推荐(0) 编辑

Know more about LOCK_SGA Parameter
摘要：Can you kindly define and explain of lock_sga parameter?each flatform(HP, IBM, SUN) recommended value of both parameter and why it is recommended like that value. LOCK_SGA locks the entire SGA into ... 阅读全文

posted @ 2010-01-13 06:11 Oracle和MySQL 阅读(163) 评论(0) 推荐(0) 编辑

Know Oracle Process OS Scheduled Priority
摘要：Can you kindly define and explain of this parameter?_os_sched_high_priority Regarding _os_sched_high_priority :Setting LMS priority automatically via _os_sched_high_priority It has been proven that p... 阅读全文

posted @ 2010-01-13 05:54 Oracle和MySQL 阅读(283) 评论(0) 推荐(0) 编辑

查询v$lock缓慢和direct path write temp等待
摘要：v$lock是常用的enqueue lock队列锁动态性能视图，不管是用户自己部署的监控脚本也好、还是enterprise manager都多少会使用到该V$LOCK视图， 但是在10g中遇到了v$lock查询缓慢的问题， 例如下面的查询会等待较多direct path write temp等待事件： select count(*) from v$lock; COUNT(*) -------... 阅读全文

posted @ 2010-01-06 21:28 Oracle和MySQL 阅读(328) 评论(0) 推荐(0) 编辑

【转】TSM5.3安装步骤
摘要：安装步骤2.1 安装TSM服务器创建/usr/Tivoli/tsm 文件系统，大小1G左右放入安装介质，smit installp安装如下组件tivoli.tsm.server.aix5.rte64tivoli.tsm.server.comtivoli.tsm.server.webcontivoli.tsm.server.aix5.rte64tivoli.tsm.server... 阅读全文

posted @ 2010-01-04 15:38 Oracle和MySQL 阅读(522) 评论(0) 推荐(0) 编辑

ORA-600 [17003]错误一例
摘要：一套AIX 上的10.2.0.4系统运行catupgrd.sql脚本时出现ORA-600 [17003]错误， 详细的日志如下： ALTER TYPE lcr$_row_record ADD MEMBER FUNCTION * ERROR at line 1: ORA-00600: internal error code, arguments: [17003], [0x70000008E6DA8C... 阅读全文

posted @ 2010-01-03 07:50 Oracle和MySQL 阅读(787) 评论(0) 推荐(0) 编辑

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