Understanding and Optimizing Oracle Latches/Mutexes. Oracle memory serialization control is core to Oracle database operations. One of the most fascinating topics in Oracle internals and performance optimization is memory serialization. We will look at the circumstances in which serialization is used, how it works, how to influence its operation, and how to diagnose problems. It's a complex situation; in order to get the upper hand on serialization control, this presentation will explore the lock (a little), the latch (a lot), and the mutex (a whole lot). Topics will include: performance diagnosis, how Oracle implements latches and mutexes, and related internal algorithms. Special attention will be given to the library cache mutex operations. This is a practical, yet deep internals presentation filled with amazing discoveries about how Oracle works. For more information go to www.orapub.com
Views: 287 OraPub, Inc.
Understanding And Resolving Oracle CBC Wait/Latch Contention When a server process needs to access a buffer it must access the cache buffer chain (CBC) structure to determine if the buffer is already in the buffer cache. With just the right workload mix, performance can be a problem. Learning about the relevant Oracle internals and how to diagnose and solve CBC performance problems is what this seminar is all about. For more information go to www.orapub.com
Views: 1018 OraPub, Inc.
In this episode we discuss the differences between exclusive lock and shared lock (also known as two phase locking) with an example. We define the both and list their advantages and disadvantages. Exclusive and shared lock are very important artifacts in DBMS systems. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ ⇨ [x] Proxy vs Reverse Proxy https://goo.gl/ZYFQAi ⇨ [x] Stateful vs Stateless Applications https://goo.gl/Fubfi6 ⇨ [x] Virtual Machines vs Containers https://goo.gl/fiECVb ⇨ [x] Database ACID - Atomicity https://goo.gl/ER9PPj ⇨ [x] Database ACID - Consistency https://goo.gl/VpLAeN ⇨ [x] Database ACID - Dirty read https://goo.gl/pkB528 ⇨ [x] Database ACID - Phantom read https://goo.gl/rnyzuA ⇨ [x] Database ACID - Non repeatable read https://goo.gl/8kgEjN ⇨ [x] Database ACID - Read uncommitted https://goo.gl/4igWUq ⇨ [x] Database ACID - Read committed https://goo.gl/twgAKL ⇨ [x] Database ACID - Repeatable read https://goo.gl/vDcP6M ⇨ [x] HOW I GREW MY YOUTUBE SUBS TO 2000 WITH A $25 MIC https://goo.gl/cM5VFx ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Views: 683 IGeometry
In this demonstration I will share with you how Ansible can be used to refresh a non-Production Oracle database from Production in just over a minute using the Pure Storage REST API's and standard Ansible Linux Modules.
Views: 650 Ron Ekins
In this tutorial you will learn how to monitor locks, latches, wait events in oracle.
Views: 4799 DBA Pro
SELECT sys_context('USERENV', 'SID') FROM dual; set lines 130 set pages 1000 SELECT substr(DECODE(o.kglobtyp, 7, 'PROCEDURE', 8, 'FUNCTION', 9, 'PACKAGE', 12, 'TRIGGER', 13, 'CLASS'),1,15) "TYPE", substr(o.kglnaown,1,30) "OWNER", substr(o.kglnaobj,1,30) "NAME", s.indx "SID", s.ksuseser "SERIAL" FROM sys.X$KGLOB o, sys.X$KGLPN p, sys.X$KSUSE s WHERE o.inst_id = USERENV('Instance') AND p.inst_id = USERENV('Instance') AND s.inst_id = USERENV('Instance') AND o.kglhdpmd = 2 AND o.kglobtyp IN (7, 8, 9, 12, 13) AND p.kglpnhdl = o.kglhdadr AND s.addr = p.kglpnses ORDER BY 1, 2, 3 ; http://surachartopun.com/2008/12/recompiled-stored-procedure-library.html
Views: 840 Surachart Opun
In This Tutorial I have Explained Slim Reader Writer Lock in Shared Mode. I have already covered Slim Reader Writer Lock in Exclusive Mode in Tutorial No- 26. I have used following API's 1. InitializeSRWLock 2. AcquireSRWLockShared 3. SleepConditionVariableSRW 4. TryAcquireSRWLockShared 5. ReleaseSRWLockShared 6. WakeCondionalVariable 7.WakeAllCondionalVariable For More information about Slim Reader Writer Lock follow this link https://msdn.microsoft.com/en-us/library/windows/desktop/aa904937(v=vs.85).aspx 1. How to Create Thread in Windows https://www.youtube.com/watch?v=vHX8Dsrt2Z0 2. Conditional Variable in Producer Consumer Problem https://www.youtube.com/watch?v=CCEtDhlS_Y0&t=908s 3. Critical Section for Thread Synchronization https://www.youtube.com/watch?v=jNnMF7r6SkU&t=12s References from - https://msdn.microsoft.com
Views: 168 ASystemProgramming Channel
In this video I test some more software on ReactOS Daily Build ga5f1290-dbg (5th April 2018). Programs tested include: -ClassicShell -Start8 -JNES -KIGB Emulator -Microsoft Virtual PC 2004 -Java Runtime Environment 7 (JRE 7) -Advance Mario Sequencer -RockNES ReactOS website: reactos.org
Views: 43 Ryan Smith
This video shows how to set up continuous integration for a Ruby on Rails project on Semaphore CI, a hosted continuous integration and deployment service built for speed and simplicity. Learn more and register at http://semaphoreci.com/. Useful links: Semaphore features: https://semaphoreci.com/product/ Documentation: https://semaphoreci.com/docs/ Docker-based continuous delivery: https://semaphoreci.com/product/docker Tutorials: https://semaphoreci.com/community Blog: https://semaphoreci.com/blog/ Pricing: https://semaphoreci.com/pricing Signup: https://semaphoreci.com/
Views: 9337 SemaphoreCI
Get the class materials to follow along at http://www.opensecuritytraining.info/MalwareDynamicAnalysis.html Follow us on Twitter for class news @OpenSecTraining. The playlist for this class is at: http://bit.ly/YkYmMO This introductory malware dynamic analysis class by Veronica Kovah is dedicated to people who are starting to work on malware analysis or who want to know what kinds of artifacts left by malware can be detected via various tools. The class will be a hands-on class where students can use various tools to look for how malware is: Persisting, Communicating, and Hiding We will achieve the items above by first learning the individual techniques sandboxes utilize. We will show how to capture and record registry, file, network, mutex, API, installation, hooking and other activity undertaken by the malware. We will create fake network responses to deceive malware so that it shows more behavior. We will also talk about how using MITRE's Malware Attribute Enumeration & Characterization (MAEC - pronounced "Mike") standard can help normalize the data obtained manually or from sandboxes, and improve junior malware analysts' reports. The class will additionally discuss how to take malware attributes and turn them into useful detection signatures such as Snort network IDS rules, or YARA signatures. Dynamic analysis should always be an analyst's first approach to discovering malware functionality. But this class will show the instances where dynamic analysis cannot achieve complete analysis, due to malware tricks for instance. So in this class you will learn when you will need to use static analysis, as offered in follow the follow on Introduction to Reverse Engineering and Reverse Engineering Malware classes. During the course students will complete many hands on exercises. Course Objectives: * Understand how to set up a protected dynamic malware analysis environment * Get hands on experience with various malware behavior monitoring tools * Learn the set of malware artifacts an analyst should gather from an analysis * Learn how to trick malware into exhibiting behaviors that only occur under special conditions * Create actionable detection signatures from malware indicators This class is recommended for a later class on malware static analysis. This is so that students understand both techniques, and utilize the technique which gives the quickest answer to a given question.
Views: 3294 Open SecurityTraining
DTrace is a comprehensive dynamic tracing framework created by Sun Microsystems for troubleshooting kernel and application problems on production systems in real time. Originally developed for Solaris, it has since been released under the free Common Development and Distribution License (CDDL) and has been ported to several other Unix-like systems. DTrace can be used to get a global overview of a running system, such as the amount of memory, CPU time, filesystem and network resources used by the active processes. It can also provide much more fine-grained information, such as a log of the arguments with which a specific function is being called, or a list of the processes accessing a specific file. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 102 Audiopedia
Check the video and see how EXEM Consultants help our customer quickly identifying problem and solve them.
Views: 50 EXEM TV
A lot of the cloud discussion centers around which hypervisors are the best and which management tools will simplify our life the most. But is it the whole story? When problems are addressed from the lower and higher layers, the middleman—the guest operating system—is usually left behind. This changes with OSv, an operating system designed from the ground up to run Java applications in the cloud. OSv is a library OS. Therefore, you can think of using it as being a way to boot a JVM directly into the cloud. Forget OS management: it’s your application and the end of the story. Besides explaining the architecture, this presentation demonstrates how designing an OS with Java in mind can benefit the Java ecosystem. Authors: Don Marti Don Marti is a technical marketing manager for Cloudius Systems, the OSv company. He has written for Linux Weekly News, Linux Journal, and other publications. He co-founded the Linux consulting firm Electric Lichen, which was acquired by VA Linux Systems. Don has served as president and vice president of the Silicon Valley Linux Users Group and on the program committees for Uselinux, Codecon, and LinuxWorld Conference and Expo. View more trainings by Don Marti at https://www.parleys.com/author/don-marti-1 Glauber Costa Glauber Costa is one of the early engineers responsible for OSv. He previously worked with IBM and Red Hat, contributing for the Xen and KVM hypervisors and other Linux topics in general. More recently he was with Parallels, where he was a Lead Engineer in their Linux Containers efforts. View more trainings by Glauber Costa at https://www.parleys.com/author/glauber-costa-1 Find more related tutorials at https://www.parleys.com/category/developer-training-tutorials
Views: 2361 Oracle Developers
As West Region India's leading Red Hat training partner, we deliver the full catalog of Red Hat Enterprise Performance Tuning & System Monitoring... Red Hat Enterprise System Monitoring and Performance Tuning (RH442) ... we also deliver provide redhat linux training in Pune rhce rhcva and cloud training...
Views: 3262 Focus Training Services
Make your library cache angry! This video is about how an intense and diverse SQL statement workload can cause Oracle parsing problems. There are many reasons for Oracle parsing related performance issues and many ways to identify them. So, I am narrowing the scope by focusing on one possible cause, that is, an intense and diverse SQL statement workload. I will use Oracle's wait interface to identify the root cause. Sound dry and boring? To make this a little more interesting and a whole lot more fun, I'm going to approach this from a non-traditional, almost backward perspective. After explaining some of the Oracle internals, I'm going to create a parsing intensive workload and then watch what happens... in real time. The educational impact is so powerful, I recorded a video This is video is part of Craig's blog post: http://blog.orapub.com/20170126/how-an-intense-and-diverse-sql-workload-causes-oracle-parsing-problems.html For more information go to www.orapub.com
Views: 283 OraPub, Inc.
Views: 438 Jug Łódź
Google Tech Talk July 22, 2010 ABSTRACT Presented by Professor George Candea http://people.epfl.ch/george.candea This talk proposes cloud-based automated software reliability services (SRS), a step toward making testing and debugging of code as easy as using webmail. SRS is automatic, without human involvement from the service user's or provider's side; this is unlike today's "testing as a service" businesses, which employ humans to write tests. First, I will outline four of the SRS components we envision: a "home edition" on-demand testing service for consumers to verify the software they are about to install on their PC or mobile device; a "programmer's sidekick" enabling developers to thoroughly and promptly test their code with minimal upfront resource investment; a public "certification service," akin to Underwriters Labs, that independently assesses the reliability, safety, and security of software; and an "automated debugging" service that helps developers fix code based on bug reports from the field. Then I will present in detail execution synthesis, the technique that makes automated debugging (the latter SRS component) a reality. Given a program and a bug report, execution synthesis combines static analysis and symbolic execution to "synthesize" a thread schedule and various required program inputs that cause the reported bug to manifest. The synthesized execution can then be played back deterministically in a regular debugger, like gdb. We have found this determinism to be particularly useful in debugging concurrency bugs. Our technique requires no runtime tracing or program modifications, thus incurring no runtime overhead and being practical for use in production systems. We evaluate it on popular software (e.g., the SQLite database, ghttpd Web server, HawkNL network library, UNIX utilities) and find that, starting from mere bug reports, it can reproduce on its own several real concurrency and memory safety bugs in less than three minutes.
Views: 7375 GoogleTechTalks
Writing concurrent libraries for all Ruby runtimes by Petr Chalupa Have you ever wondered how to use all of your cores? The talk will take you on a path of writing a simple concurrent class. We'll start with a basic implementation and gradually improve it based on presented problems and newly learned facts. Our final solution will behave well in the face of concurrency and execute consistently on all Ruby implementations. We’ll investigate various Ruby runtime differences that we’ve abstracted away with the synchronization layer of the concurrent-ruby gem. We'll go down to JRuby extensions, even volatile fields and compare-and-swap operations.
Views: 677 Confreaks
http://anwendeng.blogspot.tw/2014/07/vc10pkcs-11-hsm-c.html 這跟稍早VC版本如VC6、VC8、VC9的設定非常不同，即使是程式老手也要試一陣子。PKCS#11的C程式至少要有: cryptoki.h cryptoki2.lib 前置處理器Preprocessor也要設定。 VC8、VC9的設定 http://youtu.be/gB5-f6GTiBw VC6的設定 http://youtu.be/S_KlRif6-2s
Views: 1422 Anwen Deng
Présentée par Valentin Famelart et Thomas Papillon Vous ne connaissez pas encore le fabuleux univers de Linux ? Vous pourrez alors apprendre ce qu'est Linux, à quoi ça sert et qui l'utilise. Bien entendu nous ne pouvons pas aborder Linux sans parler de logiciel Open Source et autres joyeusetés. Vous ne savez pas ce que c'est ? Ne vous inquiétez pas on va tout vous expliquer. Vous êtes curieux ? Vous découvrirez ce qu'il y a sous le capot ainsi que des aspects avancés de Linux. La page de la conf : http://learn.atilla.org/linux.html
Views: 1813 ATILLA
Original Preset Credits(Orange83) : https://youtu.be/qaEndem1kUg I hope you like these 10 free smooth transition Preset Pack for adobe premiere pro. This preset pack includes Zoom, Whip, Slide Spin My Music - http://share.epidemicsound.com/p8vsr Download TRANSITION PACK(Please Donate for support) : https://sellfy.com/p/SDEL/ WHOOSH Sound pack : https://youtu.be/O7Gvrug_bko Create Cinematic LOOK : https://youtu.be/nYtKTYOKS1s Color graded this video with AB LUT pack, https://sellfy.com/p/Z3x1/ Download all my presets and transitions, https://sellfy.com/ankitbhatiafilms Get exact songs list used in this video, https://sellfy.com/p/nLhW/ Connect with me, https://www.instagram.com/ankitbhatiafilms
Views: 657522 Ankit Bhatia
This video will show you how to fix "fatal error include no such file or directory" error for external header file that you have created for class declaration. *************************** Note *********************************** 1] This solution is not for the standard header files like iostream.h, graphics.h, cstdlib.h, stdafx.h, stdio.h, stdl.h. You can try the same steps mentioned in video for these standard header file. 2] You can add in search directory option the following path "C:\Program Files\CodeBlocks\*****\*****\include\c++". The *** symbols refers to some directories those are system dependent. Please search include directory under the code block and add it into search directory as mentioned in video. (See video to know how to add search directories) *************************** Thank you ******************************* Some tags :- code blocks include no such file or directory, code blocks no such file or directory include, code blocks no such file or directory header, code blocks fatal error no such file or directory, no such file or directory codeblocks, fatal error no such file or directory code blocks, fatal error cstdlib no such file or directory codeblocks, iostream.h, graphics.h, cstdlib.h, stdafx.h, stdio.h, stdl.h, eclipse , compilation terminated, string, vector, map
Views: 85900 Just Video