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Luís Marques | Stuff about Big Data, small Data, RDBMS, etc | lcmarques.com Reviews
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Stuff about Big Data, small Data, RDBMS, etc
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Resource Manager – CPU allocation math – Part 3 | Luís Marques
https://lcmarques.com/2014/06/15/resource-manager-cpu-allocation-math-part-3
Presman – DBRM Monitor. Resource Manager CPU allocation math Part 3. This is the last post of this mini-series regarding CPU allocation in Resource Manager. The idea behind this last post is very simple: Tracing the same test case we’ve used before and analyze trace files. This will let us understand how Oracle instrumentation works when DBRM is active and managing the CPU. Please note that we are going to trace for only one service, that is perfectly enough for our testing. Some interesting info here:.
Luís Marques | Page 2
https://lcmarques.com/page/2
Presman – DBRM Monitor. Resource Manager CPU allocation math Part 3. This is the last post of this mini-series regarding CPU allocation in Resource Manager. The idea behind this last post is very simple: Tracing the same test case we’ve used before and analyze trace files. This will let us understand how Oracle instrumentation works when DBRM is active and managing the CPU. Please note that we are going to trace for only one service, that is perfectly enough for our testing. Some interesting info here:.
Resource Manager – CPU allocation math – Part 2 | Luís Marques
https://lcmarques.com/2014/06/10/resource-manager-cpu-allocation-math-part-2
Presman – DBRM Monitor. Resource Manager CPU allocation math Part 2. As said in Part 1, the Part 2 will focus to measure how Oracle will effectively redistribute the CPU allocation defined in previous part. This is a important step while testing Resource Manager, it is very important to test your plans to ensure that Oracle behavior is according of what you are expecting. SQL alter system set resource manager plan='DW PLAN' scope=both; System altered. Now that we are burn heavily our cpu, let’s che...
SLOB LIO against Oracle on AIX different page sizes | Luís Marques
https://lcmarques.com/2015/03/26/slob-lio-against-oracle-on-aix-different-page-sizes
Presman – DBRM Monitor. SLOB LIO against Oracle on AIX different page sizes. 1 – Introduction. We all know the possible benefits of using Huge Pages. Depending of the platform). Is is simply a method to have larger page size and that is useful for working with very large memory allocations. As you already know how things flow in Linux Kernel i will just give you a brief how things go in another operating system: AIX. To know the different page sizes available for your AIX system:. 2 – The basics. Lsattr ...
Presentations 2015 | Luís Marques
https://lcmarques.com/2015/06/28/presentations-2015
Presman – DBRM Monitor. Presentations that were selected at OUGN 2015. Are now public available to download on slideshare. Drill Down the most underestimate Oracle feature: Database Resource Manager. Proof of Concept with Real Application Testing. This entry was posted in Uncategorized. June 28, 2015. SLOB LIO against Oracle on AIX different page sizes. GPO – Back to writing in Portuguese →. Leave a Reply Cancel reply. Enter your comment here. Fill in your details below or click an icon to log in:. ASM d...
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Tales of an oracle dba: March 2015
http://pfierens.blogspot.com/2015_03_01_archive.html
Tales of an oracle dba. This blog is about oracle databases. Tuesday, March 31, 2015. Assumption is the mother of . We had complaint about a batch job that took much longer to complete on environment A then on environment B. I checked and indeed the plans where different. As we recently updated from 11.2.0.4 BP12 to BP15 on that environment (A) my first idea was that this caused the issue, to exclude everything I imported the table stats from the working environment B to the environment A. Card: Original...
Tales of an oracle dba: wow what a seminar
http://pfierens.blogspot.com/2015/03/wow-what-seminar.html
Tales of an oracle dba. This blog is about oracle databases. Saturday, March 14, 2015. Wow what a seminar. Wow it’s behind us again a great OUGN Varseminar 2015,big shout out to the boa(r)(t)d to have made this again a success. You’ve set the bar very high for coming years, I hope to be able to be part of other future editions! It was a very good idea to put the exhibition hall not on the same floor as the talks,giving more breathing room around the rooms. Were the sessions of :. Also known as @DBAKevlar.
Understanding Flash: Summary – NAND Flash Is A Royal Pain In The … | flashdba
https://flashdba.com/2015/05/14/understanding-flash-summary-nand-flash-is-a-royal-pain-in-the-xxx
Oracle databases, storage and the high-performance world of flash memory. Index of All Posts. All About Oracle Support. Index of All Scripts. Advanced Format: 4k Sector Size. The Great Hypervisor Bake-off: VMware ESX vs Oracle VM. Was I Mentioned During Oracle’s Q4 2015 Results Call? Understanding Flash: Summary – NAND Flash Is A Royal Pain In The …. May 14, 2015. So this is it – the last article in my mini-series on understanding flash. That was worth reading”. No pressure eh? Flash media wears out.
AWR Generator: SQL script for generating multiple AWR Reports | flashdba
https://flashdba.com/database/useful-scripts/awr-generator
Oracle databases, storage and the high-performance world of flash memory. Index of All Posts. All About Oracle Support. Index of All Scripts. Advanced Format: 4k Sector Size. AWR Generator: SQL script for generating multiple AWR Reports. The following script is used with Oracle databases for generating multiple AWR reports between two points in time (determined by snapshots in the Automatic Workload Repository – one report per snapshot). To try and keep the look and feel recognisable, I’ve called O...
The Ultimate Guide To Oracle Support | flashdba
https://flashdba.com/database/the-ultimate-guide-to-oracle-support
Oracle databases, storage and the high-performance world of flash memory. Index of All Posts. All About Oracle Support. Index of All Scripts. Advanced Format: 4k Sector Size. The Ultimate Guide To Oracle Support. The intention of this post is simple: Oracle Support. But I feel that would be unfair; I honestly don’t want to paint Support in a negative light. If you want to know why I feel that way then make sure you read the Experiences With Oracle Support. Section at the end. Or MOS), or it may be in the...
Database | flashdba
https://flashdba.com/database
Oracle databases, storage and the high-performance world of flash memory. Index of All Posts. All About Oracle Support. Index of All Scripts. Advanced Format: 4k Sector Size. This page links to a set of generic articles I have written about the subject of databases. I say “generic”, but you shouldn’t be too surprised to find at least one of the topics of Flash and Exadata cropping up somewhere in each post if you look hard enough…. Database Consolidation (Part 1). All posts tagged with Database. Understa...
Storage Myths | flashdba
https://flashdba.com/category/storage-for-dbas/storage-myths
Oracle databases, storage and the high-performance world of flash memory. Index of All Posts. All About Oracle Support. Index of All Scripts. Advanced Format: 4k Sector Size. Storage Myths: Storage Compression Has No Downside. December 17, 2013. Image courtesy of marcovdz. In this blog series. In storageland we tend to talk about the data reduction. Suite of tools, which comprise of deduplication. And look at all the processes involved. Or at some later stage (known as. Traditionally, compression has bee...
Useful Scripts | flashdba
https://flashdba.com/database/useful-scripts
Oracle databases, storage and the high-performance world of flash memory. Index of All Posts. All About Oracle Support. Index of All Scripts. Advanced Format: 4k Sector Size. This page is an index of various scripts I use. If they are useful to other people then that’s great. However, in this crazy world I must point out the following disclaimer:. Neither I nor my employer, Violin Memory, accept any responsibility for damage caused through the use of these scripts and tools. Used for driving PIO. You are...
Database Economics | flashdba
https://flashdba.com/category/storage-for-dbas/database-economics
Oracle databases, storage and the high-performance world of flash memory. Index of All Posts. All About Oracle Support. Index of All Scripts. Advanced Format: 4k Sector Size. Playing The Data Reduction Lottery. January 24, 2014. Picture courtesy of Capsun Poe. Do you want to sell your house? So how can you say no? The only thing is, when we come to make the trade I turn up not with a suitcase full of cash but a single. Lottery ticket. How would you feel about that? States it has an. Meanwhile, back in st...
awr-parser.sh – Script for parsing Oracle AWR Reports | flashdba
https://flashdba.com/database/useful-scripts/awr-parser
Oracle databases, storage and the high-performance world of flash memory. Index of All Posts. All About Oracle Support. Index of All Scripts. Advanced Format: 4k Sector Size. Awr-parser.sh – Script for parsing Oracle AWR Reports. The awr-parser.sh script ( available here. Is a tool for extracting data from Oracle AWR reports in order that it can be plotted in graphical form. The input is a set of AWR reports in TEXT format. Can be https:/ flashdba.com/database/useful-scripts/awr-generator/. In addition, ...
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O velho Natu, Futebol e Fuxicos. A Humanidade está duas doses abaixo do normal. meu Botafogo ainda me mata do coração. e a Vida é bela. 5 de maio de 2011. Recebi e compartilho, ainda 'restam' 16 dias. Luiz Carlos FS Marques. Links para esta postagem. 23 de fevereiro de 2011. Vale a pena clicar. Doce de côco, Jacob do Bandolim. Luiz Carlos FS Marques. Links para esta postagem. Poema de Filipe Couto, musicado pela Priscilla Frade. Luiz Carlos FS Marques. Links para esta postagem. 16 de janeiro de 2011.
Luís Marques | Stuff about Big Data, small Data, RDBMS, etc
Stuff about Big Data, small Data, RDBMS, etc. Presman – DBRM Monitor. Hive ORC file format – Built-in Indexes. October 29, 2017. I’m back writing on my personal blog, because i’ve felt the “force”. ORC is basically a columnar format (Optimized Row Columnar) with some smart tricks to allow huge performance improvements on Hive processing. ORC contains 3 levels of indexes:. File level (across the entire file). Stripe level (across the entire stripe). Back to the indexes, file and stripe level columnar stat...
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