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This note is to clarify the patch requirement when doing 11.2.0.1 to 11.2.0.2 rolling upgrade. Pre-requsite for 11.2.0.1 to 11.2.0.2 ASM Rolling Upgrade There has been some confusion as what patches need to be applied for 11.2.0.1 ASM rolling upgrade to 11.2.0.2 to be successful. Documentation rega. 阅读全文
posted @ 2011-04-25 16:14
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In the event you cannot mount your ASM disk groups, you will be unable to start any databases using those disk groups. Here is a possible error reported when mounting ASM disk groups:SQL> startup mountORA-15032: not all alterations performedORA-15063: diskgroup "<DISK GROUP NAME>" 阅读全文
posted @ 2011-04-25 15:01
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This article describes the steps to migrate a database from Non-ASM to ASM and vice-versa. To setup ASM, please followNote 452924.1 - How to Prepare Storage for ASMNote 265633.1 - ASM Technical Best PracticesNote 249992.1 - New Feature on ASM (Automatic Storage Manager).Scope and ApplicationA schedu 阅读全文
posted @ 2011-04-25 14:49
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Thisdocument provides a procedure to configure/reconfigure the ( High AvailabilityService ) HAS and CSS resource on Oracle Grid Infrastructure for nonRAC setup Solution 1） Whenyou install grid infrastructure for single instance, at the end we run root.sh, that directs you to run the following scrip. 阅读全文
posted @ 2011-04-25 11:22
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This document will list the possible meta characters for asm_diskstring parameter Solution* and [] are the two valid meta characters for asm_diskstring parameter.SQL> alter system set asm_diskstring='/dev/raw/raw*' scope=both;System altered.SQL> select path from v$asm_disk;PATH-------- 阅读全文
posted @ 2011-04-25 11:05
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After installing a non-RAC (Real Application Clusters) 10g database, you notice an ocssd.bin process running.ps -ef | grep ocssd.binoracle 11139 11056 0 14:02:14 pts/52 0:00 grep ocssd.binoracle 1824 1 0 Mar 12 ? 0:01 /oracle/64bit/10.1.0/bin/ocssd.bin Solution In a non-RAC environment, the ocssd.b. 阅读全文
posted @ 2011-04-25 10:59
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If using pfile, it must be a filesystem file on local filesystem.If using spfile, then it can be in the following locations.-- a filesystem file spfile on local filesystem-- spfile on shared device-- a ASM file in a ASM diskgroup (only for spfile for DB instances before 11.2)Trying to put ASM spfile 阅读全文
posted @ 2011-04-25 10:49
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In a single asm_diskstring parameter we can have 255 characters and this excludes the asterisk (*) , comma (,) and single-quote ('). This is limited by v$asm_disk.path column's datatype length. In an ASM instance we can have multiple asm_diskstring parameters. But the values from them are co 阅读全文
posted @ 2011-04-25 10:41
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Paul Graham：撼动硅谷的人（译文）作者：阮一峰日期：2010年12月19日为《黑客与画家》写"译者序"，遇到一个棘手的问题。"应该如何介绍Paul Graham，才能让中国读者了解，这是一个在美国互联网界如日中天的教父级人物？"正在发愁的时候，老天帮忙，让我看到了上个月《福布斯》杂志有一篇Paul Graham长篇专访，写得非常棒，是迄今最佳的关于他的介绍。这么难得的材料，怎么能错过呢！我把全文翻译了出来，打算跟出版社沟通，收入《黑客与画家》的中译本。==============================Paul Graham：撼动硅谷的 阅读全文
posted @ 2011-04-20 13:38
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快速排序（Quicksort）的Javascript实现作者：阮一峰日期：2011年4月 4日日本程序员norahiko，写了一个排序算法的动画演示，非常有趣。这个周末，我就用它当做教材，好好学习了一下各种排序算法。排序算法（Sorting algorithm）是计算机科学最古老、最基本的课题之一。要想成为合格的程序员，就必须理解和掌握各种排序算法。目前，最常见的排序算法大概有七八种，其中"快速排序"（Quicksort）使用得最广泛，速度也较快。它是图灵奖得主C. A. R. Hoare（1934--）于1960时提出来的。"快速排序"的思想很简单，整 阅读全文
posted @ 2011-04-20 11:23
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