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  • Which Win32 API reports the Format preference in the Region and Language control panel?

    - by Integer Poet
    Windows 7 and Windows Vista have a Region and Language control panel which contains a Formats tab which contains a popup menu titled Format. This menu allows the user to select from among many language-oriented sets of number, currency, time, and date formatting preferences regardless of the language of the base system. For example, I could decide I prefer the default currency symbol to be Japanese yen on a US English system. The Windows Contacts application changes its behavior depending on these format preferences. For example, if I select Japanese formatting preferences, Windows Contacts displays and lets me edit phonetic names (AKA "ruby", "yomi", and "furigana") but not middle names. If I select US English formatting preferences, Windows Contacts displays and lets me edit middle names but not phonetic names. I need to write code (native C calling Win32) which mirrors the behavior of the Windows Contacts application in this respect. Which API should I call?

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  • Shall i learn Assembly Language or C, to Understand how "real programming" works?

    - by Daniel Upton
    Hello, World.. I'm a web developer mostly working in Ruby and C#.. I wanna learn a low level language so i dont look like an ass infront of my (computer science expert) boss. Ive heard a lot of purist buzz about how assembly language is the only way to learn how computers actually work, but on the other hand C would probably be more useful as a language rather than just for theory. So my question is.. Would Learning C teach me enough computer science theory / low level programming to not look like a common dandy (complete tool)? Thanks! Daniel

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  • Are there any widely-agreed upon guidelines for rating your language knowledge on a scale?

    - by DVK
    The question was imagined after a co-worker was complaining for an hour about some guy who could not answer basic Java questions on an interview after self-identifying himself as "8 out of 10" on Java. While that was an obvious fib, I personally always had major trouble defining my specific language skills on a sliding scale unless I'm given specific guidelines (remember 40 standard libraries by heart? Able to solve 10 random Project Euler problems in <30 mins each? Can write implementation of A, B and C data-structures from scratch in 30 mins? Know 30% of standard? Can answer 50% of questions on StackOverflow pertaining to the language?) So, I was wondering - is there some sort of commonly accepted methodology for translating such tangible benchmarks into "rate yourself on a language between 1-10"? "Kernighan gets an A, God gets a B, everyone else gets C and less" type jokes are not helpful :)

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  • How to use FBJS to get the language preference of the user?

    - by ed.talmadge
    I'm modifying an existing FaceBook application. The FaceBook application is generated by another application, so I don't have much control over it. I can only add html/javascript. My goal is to use FBJS to detect the current language setting of the user and display a different message depending on their language. For example, if the user has their language setting set to Spanish, then I would like to show a message in Spanish on my FaceBook application. How can I do this?

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  • Is Python a beginner language or is it robust?

    - by orokusaki
    I am already working on some software in Python but I'm having one of those days where I step back and reflect just to make sure I'm not spinning my wheels. I know that Twitter launched with RoR because it was fast to build. Then they almost moved into another language in 2008 because of scalability issues. This has caused me to step back and introspect for a moment to make sure I'm heading down the right path. I've read in some tutorials and other places that Python is "a great first language" or a "nice beginner language" as though it's not capable of larger tasks. I look at it as Python can do what Java or ASP can but with about 1/4th of the code, not to mention I don't have to build or compile, etc. I've read that Java runs quite a few times faster than Python which is important of course, but then I read everywhere that hardware keeps getting cheaper and there are projects like Unladen Swallow by Google to make Python faster. Should I be concerned or is this just the remnants of Java developers?

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  • SpringBatch Jaxb2Marshaller: different name of class and xml attribute

    - by user588961
    I try to read an xml file as input for spring batch: Java Class: package de.example.schema.processes.standardprocess; @XmlAccessorType(XmlAccessType.FIELD) @XmlType(name = "Process", namespace = "http://schema.example.de/processes/process", propOrder = { "input" }) public class Process implements Serializable { @XmlElement(namespace = "http://schema.example.de/processes/process") protected ProcessInput input; public ProcessInput getInput() { return input; } public void setInput(ProcessInput value) { this.input = value; } } SpringBatch dev-job.xml: <bean id="exampleReader" class="org.springframework.batch.item.xml.StaxEventItemReader" scope="step"> <property name="fragmentRootElementName" value="input" /> <property name="resource" value="file:#{jobParameters['dateiname']}" /> <property name="unmarshaller" ref="jaxb2Marshaller" /> </bean> <bean id="jaxb2Marshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller"> <property name="classesToBeBound"> <list> <value>de.example.schema.processes.standardprocess.Process</value> <value>de.example.schema.processes.standardprocess.ProcessInput</value> ... </list> </property> </bean> Input file: <?xml version="1.0" encoding="UTF-8"?> <process:process xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:process="http://schema.example.de/processes/process"> <process:input> ... </process:input> </process:process> It fires the following exception: [javax.xml.bind.UnmarshalException: unexpected element (uri:"http://schema.example.de/processes/process", local:"input"). Expected elements are <<{http://schema.example.de/processes/process}processInput] at org.springframework.oxm.jaxb.JaxbUtils.convertJaxbException(JaxbUtils.java:92) at org.springframework.oxm.jaxb.AbstractJaxbMarshaller.convertJaxbException(AbstractJaxbMarshaller.java:143) at org.springframework.oxm.jaxb.Jaxb2Marshaller.unmarshal(Jaxb2Marshaller.java:428) If I change to in xml it work's fine. Unfortunately I can change neither the xml nor the java class. Is there a possibility to make Jaxb2Marshaller map the element 'input' to the class 'ProcessInput'?

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  • Can learning a new language (Human not programming) help your career?

    - by Omar Kooheji
    I was wondering if anyone had any experience of learning a new language (a human language not a programming one) and whether is has helped you get ahead in your career. I'm assuming that the new language is one other than English which I think is fairly essential to programming as most programming resources seem to be english. The reason I ask is I speak Arabic and was told that it would give me an edge when I was looking for jobs, and yet so far in my current job it's completely irrelevant and in my last job I had it was used but I didn't get any special "appreciation" for speaking it.

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  • Why can't there be an "ultimate" programming language? [closed]

    - by sub
    There is an uncountable sum of programming languages out there. They obviously all have their pro's and con's - but why can't there be one to "beat them all"? The main part of a programming language is it's syntax and what's possible with it. The rest are usually only a bunch of libraries, frameworks and extensions wrapped around it. So couldn't you combine all the great aspects and experiences gained from the thousands of programming languages out there to build one with a syntax that fits every task? Wouldn't it be better having only one programming language? I see only problems with the current amount of the ones in use. Why can't there be a perfect language when thinking of syntax, constructs and typing?

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  • Which technology(s) / language(s) to write linux web application/service? [closed]

    - by Lee Tickett
    I am currently playing with some open source home automation software www.domotiga.nl The software is built in Gambas2 (a graphical programming language similar to visual basic). I am considering building something similar or porting domotiga to a server based application/service. The application would need a web front end and i will likely be developing in debian (arm). But i'm not sure if php or python are suitable for server based applications which need to be always running (collecting data etc) rather than just running when accessed. Which technology(s) / language(s) would you suggest i look into? I used to do a lot of Visual Basic, then VB.NET, now C# and have played with php a few years back- but don't really want this to sway the decision too much as i should be able to pickup whatever language if i decide to proceed.

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  • What is the term(s) used to describe programming language syntax?

    - by Mr Roys
    Is there an exact/correct term to describe this difference between the syntax/constructs of programming langauges e.g VB6 with its (if ... else ... endif) and C# with its curly braces for conditional statements. I'm using VB6 syntax and C# as examples since I'm more familiar with their syntax. For example, Visual Basic 6's syntax uses a more verbose, natural language like structure. If (id = 0) Then id = MyObject.Add(Me) Else Call MyObject.Update(Me) End If while C# has more concise syntax like: if (id == 0) { id = MyObject.Add(this); } else { MyObject.Update(this); } Conciseness? Natural languageness? Or is there a more "scientific" word for describing syntax?

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  • Does a persons' first programming language affect their programming style and if so, how? [closed]

    - by Scott Walsh
    I was speaking to an experienced lecturer recently who told me he could usually tell which programming language a student had learnt to program in by looking at their coding style (more specifically, when programming in other languages to the one which they were most comfortable with). He said that there have been multiple times when he's witnessed students attempted to write C# in Prolog. So I began to wonder, what specific traits do people gain from their first (or favourite) language which are carried over into their overall programming style, and more interestingly what good or bad habits do you think people would benefit from or should be wary of when learning specific language?

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  • What language should I learn to make 2D turn-based video games?

    - by giggles
    I want to make 2 dimensional turn-based games for the PC. Something like early Final Fantasy or Chrono Trigger. Is C++ the only plausible option? I keep getting told that C++ is the language of choice for games, but is this the case even for 2D, turn-based games? Are any other languages good for this sort of thing? I'm really big on clean, readable, extendible code, so a language that fosters that sort of thing would be great. Doing this for fun, not business. Java is the only language I really know well right now. By the way, this is my first question and I'm a noob. I read the FAQ, but if I'm doing anything noobish anyway, then I'm sorry.

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  • What language should I write my 2D game in? [closed]

    - by jmgrosen
    I'm thinking of writing a game. It's inspired by Minecraft/Terraria (but don't worry it will be different). My main question is what language I should write it in -- it'll be relatively simple graphics, more like Terraria than Minecraft. I know Java relatively well and Minecraft is written in it, but C++ seems like the industry standard for game development. However, I know next to no C++. I'm willing to learn but am worried how it will turn out for my first real project in the language. In addition to that, I'd also like suggestions on a good game engine for the language that you suggest. I'd like it to run on: Windows for sure Linux for sure Mac for sure Android would be really nice iOS is optional Thank you in advance!

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  • Is there an IDE that can simplify the process of creating a game matchmaking website?

    - by Scott
    Yes, I'm an old guy. And I'm well versed in "C" and have written several games which I have been selling on the web for a number of years. And now, I would like to adapt one of my games to be "online". Sounds simple. I'm sure I can use the thousands of lines of "C" code that I've already written. Right? So my initial investigation begins. First, I think I'll need a server program that lives on a dedicated server (or a VPS probably) that talks to a bunch of client applications that live on individual devices around the world. I can certainly handle that! (I think to myself). I'll break up my existing game into two pieces, a client piece that is just the game displays and buttons, and a server piece that does everything else. Piece of cake, right? But that means that the "server piece" must be executed on a remote machine somewhere and run 24/7. Can I do that? [apparently, that question is so basic, so uneducated, and so lame, that nobody has ever posed it before. Because hours of Googling does not yield an answer. Fine. I'll assume I can do that and move on.] I'll need a "game room", which to me means a website where you log in and then go to a lobby of some kind where you can setup your preferences, see if any of your friends are connected, and create or join games. Should be easy, but it's not. No way. Can I do all this with my local website builder? (which happens to be 90 Second Website Builder, a nice product, btw). It turns out, I can not. I can start with that, but must modify each page, so I can interact with my sql database. So I begin making each page a "PHP" page and dynamically modifying the HTML code with PHP code. I'm already starting to get a headache. Because the resulting web pages looked terrible, I began looking at using JQuery. I want to user a JQuery dialog on my website to display a list of friends and allow the user to select one to invite to the game. [google search for "how to populate a JQuery dialog from a sql database" yields nothing but more confusion.] Javascript? Java? HTML? XML? HTML5? PHP? JQuery? Flash? Sockets? Forms? CSS? Learning about each one of these, and how they interact with each other and/or depend on each other is too much for my feeble old brain. Can anyone simplify this process for me? Is there an IDE that will help me do all this without having to go back to college for a few years? Thanks, Scott

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  • On a BPM Mission with Process Accelerators. Part 1: BPM as an ATV

    - by Cesare Rotundo
    Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Part 1: BPM as an ATV It’s always exciting to talk to customers that are in the middle of a BPM transformational journey. Their thirst for new processes to improve with BPM makes them explorers in a landscape of opportunities. They have discovered that with BPM the can “go places” they couldn’t reach before. In a way, learning how to generate value with BPM is like adopting a new mean of transportation. Apps are like regular cars: very efficient, but to be used on paved roads: the road/process has been traced, and there are fixed paths to follow to get from “opportunity to quote” or from “quote to cash”. Getting off the road is risky, and laying down new asphalt is slow and expensive. Custom development is like running: you can go virtually anywhere, following any path you like, yet it’s slow, and a lot of sweat. BPM allows you to go “off the beaten path” laid out by packaged apps, yet make fast progress compared to custom development. BPM is therefore more like an All-Terrain Vehicle (ATV): less efficient than a car, but much faster than running, with a powerful enough engine that can get you places. The similarities between BPM and ATVs don’t stop here: you must learn to ride it even if you already know how to drive a car; you can reach places but figuring out the path to your destination is harder. Ultimately, with BPM as with an ATV, you reach places that you thought you could never reach, and you discover new destinations that provide great benefit to you … and that you didn’t even know existed! That’s where the sense of accomplishment that we heard from our BPM customers comes from, as well as the desire to share their experience, or even, as in the case of a County, the willingness to contribute their BPM solutions to help other agencies that face the same challenges. The question we wanted to answer is how can we teach organizations to drive ATV/BPM, thus leading them to deeper success with BPM, while increasing their awareness of the potential for reaching new targets, and finally equip them with the right tools. Like with ATVs, getting from point A to point B is more of a work of art than cruising on the highway by car. There is a lot we can do: after all many sought after destinations are common: someone else has been on the same path before. If only you could learn from their experience …

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  • ??Database Replay Capture????

    - by Liu Maclean(???)
    Database Replay?11g??????,??workload capture??????????????,???????? ??Workload Capture???????: ???????????????,???????2????,??????,???????????OLTP???????capture 10????1G???? ?????: ????????????????????? ??startup restrict????,?????????? ??capture???restrict?? ????????????? ???????????????: ??scn???????? ???????? ???????? Capture???????????workload????? ???????SYSDBA?SYSOPER????OS?? ????: ?TPCC???capture??????4.5% ????session????64KB??? ???Workload Capture?????????? ????????2?, ??RAC????workload capture  file??????????????,??start_capture????? ????session????64KB???,??????????????workload  capture file????Server Process??????,?????????parse???execution????,Server Process??LOGON?LOGOFF?SQL??????????PGA?,???WCR Capture PG?WCR Capture PGA?,?PGA?????????????????,Server Process???????????WCR???,?????WCR???Server Process??’WCR: capture file IO write’????? ?WCR?????????: SQL> select * from v$version; BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production PL/SQL Release 11.2.0.3.0 - Production CORE 11.2.0.3.0 Production TNS for Linux: Version 11.2.0.3.0 - Production NLSRTL Version 11.2.0.3.0 - Production SQL> select name from v$event_name where name like '%WCR%'; NAME ---------------------------------------------------------------- WCR: replay client notify WCR: replay clock WCR: replay lock order WCR: replay paused WCR: RAC message context busy WCR: capture file IO write WCR: Sync context busy latch: WCR: sync latch: WCR: processes HT 11g????????WCR???LATCH 1* select name,gets from v$latch where name like '%WCR%' SQL> / NAME GETS ------------------------------ ---------- WCR: kecu cas mem 3 WCR: kecr File Count 37 WCR: MMON Create dir 1 WCR: ticker cache 0 WCR: sync 495 WCR: processes HT 0 WCR: MTS VC queue 0 7 rows selected. ????????????Database Replay Capture????? 1. ????capture dbms_workload_capture.start_capture CREATE OR REPLACE DIRECTORY dbcapture AS '/home/oracle/dbcapture'; execute dbms_workload_capture.start_capture('CAPTURE','DBCAPTURE',default_action=>'INCLUDE'); SQL> select id,name,status,start_time,end_time,connects,user_calls,dir_path from dba_workload_captures where id = (select max(id) from dba_workload_captures) ; ID ---------- NAME -------------------------------------------------------------------------------- STATUS START_TIM END_TIME CONNECTS ---------------------------------------- --------- --------- ---------- USER_CALLS ---------- DIR_PATH -------------------------------------------------------------------------------- 1 CAPTURE IN PROGRESS 08-DEC-12 11 ID ---------- NAME -------------------------------------------------------------------------------- STATUS START_TIM END_TIME CONNECTS ---------------------------------------- --------- --------- ---------- USER_CALLS ---------- DIR_PATH -------------------------------------------------------------------------------- 167 /home/oracle/dbcapture 2. ?? capture file?? [oracle@mlab2 dbcapture]$ ls -lR .: total 8 drwxr-xr-x 2 oracle oinstall 4096 Dec 8 07:24 cap drwxr-xr-x 3 oracle oinstall 4096 Dec 8 07:24 capfiles -rw-r--r-- 1 oracle oinstall 0 Dec 8 07:24 wcr_cap_00001.start ./cap: total 4 -rw-r--r-- 1 oracle oinstall 91 Dec 8 07:24 wcr_scapture.wmd ./capfiles: total 4 drwxr-xr-x 12 oracle oinstall 4096 Dec 8 07:24 inst1 ./capfiles/inst1: total 40 drwxr-xr-x 2 oracle oinstall 4096 Dec 8 08:31 aa drwxr-xr-x 2 oracle oinstall 4096 Dec 8 07:24 ab drwxr-xr-x 2 oracle oinstall 4096 Dec 8 07:24 ac drwxr-xr-x 2 oracle oinstall 4096 Dec 8 07:24 ad drwxr-xr-x 2 oracle oinstall 4096 Dec 8 07:24 ae drwxr-xr-x 2 oracle oinstall 4096 Dec 8 07:24 af drwxr-xr-x 2 oracle oinstall 4096 Dec 8 07:24 ag drwxr-xr-x 2 oracle oinstall 4096 Dec 8 07:24 ah drwxr-xr-x 2 oracle oinstall 4096 Dec 8 07:24 ai drwxr-xr-x 2 oracle oinstall 4096 Dec 8 07:24 aj ./capfiles/inst1/aa: total 316 -rw-r--r-- 1 oracle oinstall 1762 Dec 8 07:25 wcr_c6cdah0000001.rec -rw-r--r-- 1 oracle oinstall 16478 Dec 8 07:28 wcr_c6cf1h0000002.rec -rw-r--r-- 1 oracle oinstall 1772 Dec 8 07:29 wcr_c6cjdh0000004.rec -rw-r--r-- 1 oracle oinstall 1535 Dec 8 07:29 wcr_c6cnah0000005.rec -rw-r--r-- 1 oracle oinstall 1821 Dec 8 07:41 wcr_c6cpfh0000007.rec -rw-r--r-- 1 oracle oinstall 1815 Dec 8 07:33 wcr_c6cq6h000000a.rec -rw-r--r-- 1 oracle oinstall 1535 Dec 8 07:34 wcr_c6cxmh000000h.rec -rw-r--r-- 1 oracle oinstall 1427 Dec 8 07:41 wcr_c6cxvh000000j.rec -rw-r--r-- 1 oracle oinstall 1425 Dec 8 07:41 wcr_c6czph000000k.rec -rw-r--r-- 1 oracle oinstall 2398 Dec 8 07:49 wcr_c6dqfh000000q.rec -rw-r--r-- 1 oracle oinstall 259321 Dec 8 08:35 wcr_c6du7h000000r.rec -rw-r--r-- 1 oracle oinstall 0 Dec 8 07:55 wcr_c6f6yh000000t.rec -rw-r--r-- 1 oracle oinstall 0 Dec 8 08:28 wcr_c6h3qh0000013.rec ./capfiles/inst1/ab: total 0 ./capfiles/inst1/ac: total 0 ./capfiles/inst1/ad: total 0 ./capfiles/inst1/ae: total 0 ./capfiles/inst1/af: total 0 ./capfiles/inst1/ag: total 0 ./capfiles/inst1/ah: total 0 ./capfiles/inst1/ai: total 0 ./capfiles/inst1/aj: total 0 [oracle@mlab2 dbcapture]$ cd ./capfiles/inst1/aa [oracle@mlab2 aa]$ ls -l total 316 -rw-r--r-- 1 oracle oinstall 1762 Dec 8 07:25 wcr_c6cdah0000001.rec -rw-r--r-- 1 oracle oinstall 16478 Dec 8 07:28 wcr_c6cf1h0000002.rec -rw-r--r-- 1 oracle oinstall 1772 Dec 8 07:29 wcr_c6cjdh0000004.rec -rw-r--r-- 1 oracle oinstall 1535 Dec 8 07:29 wcr_c6cnah0000005.rec -rw-r--r-- 1 oracle oinstall 1821 Dec 8 07:41 wcr_c6cpfh0000007.rec -rw-r--r-- 1 oracle oinstall 1815 Dec 8 07:33 wcr_c6cq6h000000a.rec -rw-r--r-- 1 oracle oinstall 1535 Dec 8 07:34 wcr_c6cxmh000000h.rec -rw-r--r-- 1 oracle oinstall 1427 Dec 8 07:41 wcr_c6cxvh000000j.rec -rw-r--r-- 1 oracle oinstall 1425 Dec 8 07:41 wcr_c6czph000000k.rec -rw-r--r-- 1 oracle oinstall 2398 Dec 8 07:49 wcr_c6dqfh000000q.rec -rw-r--r-- 1 oracle oinstall 259321 Dec 8 08:35 wcr_c6du7h000000r.rec -rw-r--r-- 1 oracle oinstall 0 Dec 8 07:55 wcr_c6f6yh000000t.rec -rw-r--r-- 1 oracle oinstall 0 Dec 8 08:28 wcr_c6h3qh0000013.rec [oracle@mlab2 aa]$ ls -l |wc -l 14 ???????14??? 3. ??LOGON????Server Process [oracle@mlab2 ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.3.0 Production on Sat Dec 8 08:37:40 2012 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, Automatic Storage Management, OLAP, Data Mining and Real Application Testing options ?????wcr?? [oracle@mlab2 aa]$ ls -ltr total 316 -rw-r--r-- 1 oracle oinstall 1762 Dec 8 07:25 wcr_c6cdah0000001.rec -rw-r--r-- 1 oracle oinstall 16478 Dec 8 07:28 wcr_c6cf1h0000002.rec -rw-r--r-- 1 oracle oinstall 1772 Dec 8 07:29 wcr_c6cjdh0000004.rec -rw-r--r-- 1 oracle oinstall 1535 Dec 8 07:29 wcr_c6cnah0000005.rec -rw-r--r-- 1 oracle oinstall 1815 Dec 8 07:33 wcr_c6cq6h000000a.rec -rw-r--r-- 1 oracle oinstall 1535 Dec 8 07:34 wcr_c6cxmh000000h.rec -rw-r--r-- 1 oracle oinstall 1425 Dec 8 07:41 wcr_c6czph000000k.rec -rw-r--r-- 1 oracle oinstall 1427 Dec 8 07:41 wcr_c6cxvh000000j.rec -rw-r--r-- 1 oracle oinstall 1821 Dec 8 07:41 wcr_c6cpfh0000007.rec -rw-r--r-- 1 oracle oinstall 2398 Dec 8 07:49 wcr_c6dqfh000000q.rec -rw-r--r-- 1 oracle oinstall 0 Dec 8 07:55 wcr_c6f6yh000000t.rec -rw-r--r-- 1 oracle oinstall 0 Dec 8 08:28 wcr_c6h3qh0000013.rec -rw-r--r-- 1 oracle oinstall 259321 Dec 8 08:35 wcr_c6du7h000000r.rec -rw-r--r-- 1 oracle oinstall 0 Dec 8 08:37 wcr_c6hp4h0000018.rec ??????wcr_c6hp4h0000018.rec ??? SQL> select spid from v$process where addr = ( select paddr from v$session where sid=(select distinct sid from v$mystat)); SPID ------------------------ 14293 ????????????????14293, ???????????????,??????wcr_c6hp4h0000018.rec [oracle@mlab2 ~]$ ls -l /proc/14293/fd total 0 lr-x------ 1 oracle oinstall 64 Dec 8 08:39 0 -> /dev/null l-wx------ 1 oracle oinstall 64 Dec 8 08:39 1 -> /dev/null lrwx------ 1 oracle oinstall 64 Dec 8 08:39 10 -> /u01/app/oracle/product/11201/db_1/rdbms/audit/CRMV_ora_14293_1.aud l-wx------ 1 oracle oinstall 64 Dec 8 08:39 11 -> /u01/app/oracle/diag/rdbms/crmv/CRMV/trace/CRMV_ora_14293.trc l-wx------ 1 oracle oinstall 64 Dec 8 08:39 12 -> pipe:[34585895] l-wx------ 1 oracle oinstall 64 Dec 8 08:39 13 -> /u01/app/oracle/diag/rdbms/crmv/CRMV/trace/CRMV_ora_14293.trm l-wx------ 1 oracle oinstall 64 Dec 8 08:39 2 -> /dev/null lr-x------ 1 oracle oinstall 64 Dec 8 08:39 3 -> /dev/null lr-x------ 1 oracle oinstall 64 Dec 8 08:39 4 -> /dev/null lr-x------ 1 oracle oinstall 64 Dec 8 08:39 5 -> /u01/app/oracle/product/11201/db_1/rdbms/mesg/oraus.msb lr-x------ 1 oracle oinstall 64 Dec 8 08:39 6 -> /proc/14293/fd lr-x------ 1 oracle oinstall 64 Dec 8 08:39 7 -> /dev/zero lrwx------ 1 oracle oinstall 64 Dec 8 08:39 8 -> /home/oracle/dbcapture/capfiles/inst1/aa/wcr_c6hp4h0000018.rec lr-x------ 1 oracle oinstall 64 Dec 8 08:39 9 -> pipe:[34585894] ?????lsof?? [root@mlab2 ~]# lsof|grep wcr_c6hp4h0000018.rec oracle 14293 oracle 8u REG 8,1 0 17629644 /home/oracle/dbcapture/capfiles/inst1/aa/wcr_c6hp4h0000018.rec ????????,??Server Process????WCR REC??,?Server Process LOGON?????? 3.????SQL??: SQL> select 1 from dual; 1 ---------- 1 SQL> / 1 ---------- 1 [oracle@mlab2 aa]$ strings wcr_c6hp4h0000018.rec ==»????SQL????, ??????? ??????SQL???,???????????????WCR??????,LOGON???????????SQL????,????????? [oracle@mlab2 aa]$ strings wcr_c6hp4h0000018.rec 11.2.0.3.0 *File header info. (Shadow process='14293') D0576B5D710A34F4E043B201A8C0ECFE SYS; NLS_LANGUAGE? AMERICAN> NLS_TERRITORY? AMERICA> NLS_CURRENCY? NLS_ISO_CURRENCY? AMERICA> NLS_NUMERIC_CHARACTERS? NLS_CALENDAR? GREGORIAN> NLS_DATE_FORMAT? DD-MON-RR> NLS_DATE_LANGUAGE? AMERICAN> NLS_CHARACTERSET? AL32UTF8> NLS_SORT? BINARY> NLS_TIME_FORMAT? HH.MI.SSXFF AM> NLS_TIMESTAMP_FORMAT? DD-MON-RR HH.MI.SSXFF AM> NLS_TIME_TZ_FORMAT? HH.MI.SSXFF AM TZR> NLS_TIMESTAMP_TZ_FORMAT? DD-MON-RR HH.MI.SSXFF AM TZR> NLS_DUAL_CURRENCY? NLS_SPECIAL_CHARS? NLS_NCHAR_CHARACTERSET? UTF8> NLS_COMP? BINARY> NLS_LENGTH_SEMANTICS? BYTE> NLS_NCHAR_CONV_EXCP? FALSE (DESCRIPTION=(ADDRESS=(PROTOCOL=beq)(PROGRAM=/u01/app/oracle/product/11201/db_1/bin/oracle)(ARGV0=oracleCRMV)(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))')(DETACH=NO))(CONNECT_DATA=(CID=(PROGRAM=sqlplus)(HOST=mlab2.oracle.com)(USER=oracle)))) ,[email protected] (TNS V1-V3)U tselect spid from v$process where addr = ( select paddr from v$session where sid=(select distinct sid from v$mystat)) ` _ select 1 from dual select 1 from dual ??????????????????? [oracle@mlab2 aa]$ strings wcr_c6hp4h0000018.rec 9`9_^B create table vva(t1 int) `:_i :`:_iB `;_^ ;`;_^B create table vva(t1 int) `_i >`>_iB FusC `?_^ ?`?_^B FvWC _begin for i in 1..50000 loop execute immediate 'select 1 from dual where 2='||i; end loop; end; ?SERVER PROCESS LOGOFF ??????? C`E_ B k^2C ????Server Process????parse?execution???WCR??,??????????PGA?,????????????,????????,?????WCR???????????,???????? 4. ?????? SQL> oradebug setmypid Statement processed. SQL> oradebug dump processstate 10; Statement processed. SQL> oradebug tracefile_name /u01/app/oracle/diag/rdbms/crmv/CRMV/trace/CRMV_ora_14293.trc ?processstate ??????????????? WCR: capture file IO write,??Server process??WCR ?? 3: waited for 'SQL*Net message to client' driver id=0x62657100, #bytes=0x1, =0x0 wait_id=139 seq_num=140 snap_id=1 wait times: snap=0.000007 sec, exc=0.000007 sec, total=0.000007 sec wait times: max=infinite wait counts: calls=0 os=0 occurred after 0.934091 sec of elapsed time 4: waited for 'latch: shared pool' address=0x60106b20, number=0x133, tries=0x0 wait_id=138 seq_num=139 snap_id=1 wait times: snap=0.000066 sec, exc=0.000066 sec, total=0.000066 sec wait times: max=infinite wait counts: calls=0 os=0 occurred after 1.180690 sec of elapsed time 5: waited for 'WCR: capture file IO write' =0x0, =0x0, =0x0 wait_id=137 seq_num=138 snap_id=1 wait times: snap=0.000189 sec, exc=0.000189 sec, total=0.000189 sec wait times: max=infinite wait counts: calls=0 os=0 occurred after 3.122783 sec of elapsed time 6: waited for 'WCR: capture file IO write' =0x0, =0x0, =0x0 wait_id=136 seq_num=137 snap_id=1 wait times: snap=0.000191 sec, exc=0.000191 sec, total=0.000191 sec wait times: max=infinite wait counts: calls=0 os=0 occurred after 3.053132 sec of elapsed time 7: waited for 'WCR: capture file IO write' 5.??PGA???? SQL> oradebug dump heapdump 536870917; Statement processed. grep WCR /u01/app/oracle/diag/rdbms/crmv/CRMV/trace/CRMV_ora_14293.trc Chunk 7fb1b606bfc0 sz= 65600 freeable "WCR Capture PG " ds=0x7fb1b6115f90 Chunk 7fb1b6111e18 sz= 4224 freeable "WCR Capture PG " ds=0x7fb1b6115f90 Chunk 7fb1b6112e98 sz= 4184 freeable "WCR Capture PG " ds=0x7fb1b6115f90 Chunk 7fb1b6113ef0 sz= 4224 freeable "WCR Capture PG " ds=0x7fb1b6115f90 Chunk 7fb1b6114f70 sz= 4104 recreate "WCR Capture PG " latch=(nil) Chunk 7fb1b6115f78 sz= 160 freeable "WCR Capture PGA" Chunk 7fb1b6116018 sz= 3248 freeable "WCR Capture PGA" Subheap ds=0x7fb1b6115f90 heap name= WCR Capture PG size= 82336 HEAP DUMP heap name="WCR Capture PG" desc=0x7fb1b6115f90 FIVE LARGEST SUB HEAPS for heap name="WCR Capture PG" desc=0x7fb1b6115f9 PGA???WCR Capture PG ?WCR Capture PGA?freeable or recreate??chunk,???????Server Process???OS Chunk 7fb1b606bfc0 sz= 65600 freeable "WCR Capture PG " ds=0x7fb1b6115f90 sz= 65600=» 64k ??????????64k??,???????????????64k WCR????????????:)! 6.???? ??WCR CAPTURE????????2? SQL> SELECT x.ksppinm NAME, y.ksppstvl VALUE, x.ksppdesc describ 2 FROM SYS.x$ksppi x, SYS.x$ksppcv y 3 WHERE x.inst_id = USERENV ('Instance') 4 AND y.inst_id = USERENV ('Instance') 5 AND x.indx = y.indx 6 AND x.ksppinm in ('_capture_buffer_size','_wcr_control'); NAME VALUE DESCRIB -------------------- -------------------- ------------------------------------------------------------ _wcr_control 0 Oracle internal test WCR parameter used ONLY for testing! _capture_buffer_size 65536 To set the size of the PGA I/O recording buffers ??_capture_buffer_size ??PGA?WCR BUFFER?SIZE,???64k _wcr_control ??WCR?????,?????? ????,??????: 1. ???WCR WORKLOAD CAPTURE???????????,??Server Process????(????)2. ???server process????WCR??3. Server Proess???LOGON?LOGOFF?SQL?????????WCR???4. Server Process????????Immediate mode,????????PGA?(WCR Capture) subheap?,??????????????(timeout?????)5. ????, Server Process????????Immediate mode,?capture????parse??execution??(?????capture???parse?????????????,parse????capture???),?????LOGON?SQL??(???????)??PGA?WCR Capture?????,???????,????????,??tpcc??????4.5%6. ????_capture_buffer_size ??PGA?WCR BUFFER?SIZE,???64k7. WCR Capture?????binrary 2????,?????,????????????????WCR capture file8. WCR: capture file IO write?????Server Process??WCR??

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  • In Ruby, how to I read memory values from an external process?

    - by grg-n-sox
    So all I simply want to do is make a Ruby program that reads some values from known memory address in another process's virtual memory. Through my research and basic knowledge of hex editing a running process's x86 assembly in memory, I have found the base address and offsets for the values in memory I want. I do not want to change them; I just want to read them. I asked a developer of a memory editor how to approach this abstract of language and assuming a Windows platform. He told me the Win32API calls for OpenProcess, CreateProcess, ReadProcessMemory, and WriteProcessMemory were the way to go using either C or C++. I think that the way to go would be just using the Win32API class and mapping two instances of it; One for either OpenProcess or CreateProcess, depending on if the user already has th process running or not, and another instance will be mapped to ReadProcessMemory. I probably still need to find the function for getting the list of running processes so I know which running process is the one I want if it is running already. This would take some work to put all together, but I am figuring it wouldn't be too bad to code up. It is just a new area of programming for me since I have never worked this low level from a high level language (well, higher level than C anyways). I am just wondering of the ways to approach this. I could just use a bunch or Win32API calls, but that means having to deal with a bunch of string and array pack and unpacking that is system dependant I want to eventually make this work cross-platform since the process I am reading from is produced from an executable that has multiple platform builds, (I know the memory address changes from system to system. The idea is to have a flat file that contains all memory mappings so the Ruby program can just match the current platform environment to the matching memory mapping.) but from the looks of things I'll just have to make a class that wraps whatever is the current platform's system shared library memory related function calls. For all I know, there could already exist a Ruby gem that takes care of all of this for me that I am just not finding. I could also possibly try editing the executables for each build to make it so whenever the memory values I want to read from are written to by the process, it also writes a copy of the new value to a space in shared memory that I somehow have Ruby make an instance of a class that is a pointer under the hood to that shared memory address and somehow signal to the Ruby program that the value was updated and should be reloaded. Basically a interrupt based system would be nice, but since the purpose of reading these values is just to send to a scoreboard broadcasted from a central server, I could just stick to a polling based system that sends updates at fixed time intervals. I also could just abandon Ruby altogether and go for C or C++ but I do not know those nearly as well. I actually know more x86 than C++ and I only know C as far as system independent ANSI C and have never dealt with shared system libraries before. So is there a gem or lesser known module available that has already done this? If not, then any additional information as to how to accomplish this would be nice. I guess, long story short, how do I do all this? Thanks in advance, Grg PS: Also a confirmation that those Win32API calls should be aimed at the kernel32.dll library would be nice.

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  • Oracle Unicode problem when using NLS_CHARACTERSET is WE8ISO8859P1 and NLS_NCHAR_CHARACTERSET is AL16UTF16, and ColdFusion as programming language

    - by tsurahman
    I have 2 Oracle 10g database, XE and Enterprise XE Enterprise and this are the data type I've use in the test table and then I tried to test to insert some Unicode char from http://www.sustainablegis.com/unicode/ and the results are XE Enterprise for this test, I use ColdFusion 9 developer edition <cfprocessingDirective pageencoding="utf-8"> <cfset setEncoding("form","utf-8")> <form action="" method="post"> Unicode : <br> <textarea name="txaUnicode" id="txaUnicode" cols="50" rows="10"></textarea> <br><br> Language : <br> <input type="Text" name="txtLanguage" id="txtLanguage"> <br><br> <input type="Submit"> </form> <cfset dsn = "theDSN"> <cfif StructKeyExists(FORM, "FIELDNAMES")> <cfquery name="qryInsert" datasource="#dsn#"> INSERT INTO UNICODE ( C_VARCHAR2, C_CHAR, C_CLOB, C_NVARCHAR2, LANGUAGE ) VALUES ( <cfqueryparam cfsqltype="CF_SQL_VARCHAR" value="#FORM.TXAUNICODE#">, <cfqueryparam cfsqltype="CF_SQL_CHAR" value="#FORM.TXAUNICODE#">, <cfqueryparam cfsqltype="CF_SQL_LONGVARCHAR" value="#FORM.TXAUNICODE#">, <cfqueryparam cfsqltype="CF_SQL_VARCHAR" value="#FORM.TXAUNICODE#">, <cfqueryparam cfsqltype="CF_SQL_VARCHAR" value="#FORM.TXTLANGUAGE#"> ) </cfquery> </cfif> <cfquery name="qryUnicode" datasource="#dsn#"> SELECT * FROM UNICODE ORDER BY LANGUAGE </cfquery> <table border="1"> <thead> <tr> <th>LANGUAGE</th> <th>C_VARCHAR2</th> <th>C_CHAR</th> <th>C_CLOB</th> <th>C_NVARCHAR2</th> </tr> </thead> <tbody> <cfoutput query="qryUnicode"> <tr> <td>#qryUnicode.LANGUAGE#</td> <td>#qryUnicode.C_VARCHAR2#</td> <td>#qryUnicode.C_CHAR#</td> <td>#qryUnicode.C_CLOB#</td> <td>#qryUnicode.C_NVARCHAR2#</td> </tr> </cfoutput> </tbody> </table> from this guide http://www.stanford.edu/dept/itss/docs/oracle/10g/server.101/b10749/ch6unicode.htm#i1007297 I think for my Enterprise database it should produce same thing as XE (at least for NVARCHAR2 column) since the typical solution from that guide said: Use NCHAR and NVARCHAR2 datatypes to store Unicode characters Keep WE8ISO8859P1 as the database character set Use AL16UTF16 as the national character set So, how to make it works too in my Enterprise database? Thank you :)

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  • NServiceBus Generic Host and mqsvc.exe high CPU

    - by Michael Stephenson
    We have been doing some work with NServiceBus recently and observed some unusual behaviour which was caused by our mistake and seemed worthy of a small post.   The Scenario In our solution we were doing some standard NServiceBus stuff by pushing a message to a queue using NServiceBus.  We had a direct send/receive scenario rather than a publish/subscribe one.   The background process which was meant to collect the message and then process it was a normal NServiceBus message handler.  We would run the NServiceBus.Host.exe which would find the handler and then do the usual NServiceBus magic.   The Problem In this solution we were creating some automated tests around this module of the integration process to ensure that it would work well.  We had two tests.   Test 1 This test would start NServiceBus.Host.exe using the Process object, then seed a message to the queue via our web service façade sitting above the queue which wrapped NServiceBus.  The background process would then process the message and the test would check the message had been processed fine.   If all was well then the NServiceBus.Host.exe process was stopped.   Test 2 In test 2 we would do a very similar thing except that instead of starting the process the test would install NServiceBus.Host.exe as a windows service and then start the service before the test and once the test was executed it would stop the test.   The Results of the Tests Test 1 worked really well, however in test 2 we found that it didn’t really work at all, instead of doing the background process we were finding that between mqsvc.exe and NServiceBus.Host.exe the CPU on the machine was maxed and nothing was really happening.   The Solution After trying a few things we found it was the permissions on the queue were not set correctly.  Once this was resolved it all worked fine and CPU was not excessive and ran just like the console application.   I think the couple of take aways from this are:   Make sure you set the windows service for NserviceBus Generic Host to the right credentials When you install the generic host as a windows service then by default it will use the default windows credentials.  For any production like scenario you should be using a domain account to run the process as via the windows service. Make sure you have the queue set with the right permissions For the credentials you have used to configure the generic host as a windows service you should ensure that this user has the appropriate permissions for any queues it will interact with. Make sure you turn on the right logging configuration in NServiceBus When this wasnt working correctly we didnt know there was an issue, we were just experiencing the high CPU condition.  I am a little surprised that there wasnt something logged and that the process didnt crash.  I guess this could be by design bearing in mind that the process could be monitoring many queues.  In this point Im just saying that originally we didnt have all of the log4net logging which is available from NServiceBus turned on.  Its probably a good idea to have this turned on and configured until you are happy your solution is working fine.   Thanks to Ahmed Hashmi on my team who got this working in the end.

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  • SQL SERVER – Concurrency Basics – Guest Post by Vinod Kumar

    - by pinaldave
    This guest post is by Vinod Kumar. Vinod Kumar has worked with SQL Server extensively since joining the industry over a decade ago. Working on various versions from SQL Server 7.0, Oracle 7.3 and other database technologies – he now works with the Microsoft Technology Center (MTC) as a Technology Architect. Let us read the blog post in Vinod’s own voice. Learning is always fun when it comes to SQL Server and learning the basics again can be more fun. I did write about Transaction Logs and recovery over my blogs and the concept of simplifying the basics is a challenge. In the real world we always see checks and queues for a process – say railway reservation, banks, customer supports etc there is a process of line and queue to facilitate everyone. Shorter the queue higher is the efficiency of system (a.k.a higher is the concurrency). Every database does implement this using checks like locking, blocking mechanisms and they implement the standards in a way to facilitate higher concurrency. In this post, let us talk about the topic of Concurrency and what are the various aspects that one needs to know about concurrency inside SQL Server. Let us learn the concepts as one-liners: Concurrency can be defined as the ability of multiple processes to access or change shared data at the same time. The greater the number of concurrent user processes that can be active without interfering with each other, the greater the concurrency of the database system. Concurrency is reduced when a process that is changing data prevents other processes from reading that data or when a process that is reading data prevents other processes from changing that data. Concurrency is also affected when multiple processes are attempting to change the same data simultaneously. Two approaches to managing concurrent data access: Optimistic Concurrency Model Pessimistic Concurrency Model Concurrency Models Pessimistic Concurrency Default behavior: acquire locks to block access to data that another process is using. Assumes that enough data modification operations are in the system that any given read operation is likely affected by a data modification made by another user (assumes conflicts will occur). Avoids conflicts by acquiring a lock on data being read so no other processes can modify that data. Also acquires locks on data being modified so no other processes can access the data for either reading or modifying. Readers block writer, writers block readers and writers. Optimistic Concurrency Assumes that there are sufficiently few conflicting data modification operations in the system that any single transaction is unlikely to modify data that another transaction is modifying. Default behavior of optimistic concurrency is to use row versioning to allow data readers to see the state of the data before the modification occurs. Older versions of the data are saved so a process reading data can see the data as it was when the process started reading and not affected by any changes being made to that data. Processes modifying the data is unaffected by processes reading the data because the reader is accessing a saved version of the data rows. Readers do not block writers and writers do not block readers, but, writers can and will block writers. Transaction Processing A transaction is the basic unit of work in SQL Server. Transaction consists of SQL commands that read and update the database but the update is not considered final until a COMMIT command is issued (at least for an explicit transaction: marked with a BEGIN TRAN and the end is marked by a COMMIT TRAN or ROLLBACK TRAN). Transactions must exhibit all the ACID properties of a transaction. ACID Properties Transaction processing must guarantee the consistency and recoverability of SQL Server databases. Ensures all transactions are performed as a single unit of work regardless of hardware or system failure. A – Atomicity C – Consistency I – Isolation D- Durability Atomicity: Each transaction is treated as all or nothing – it either commits or aborts. Consistency: ensures that a transaction won’t allow the system to arrive at an incorrect logical state – the data must always be logically correct.  Consistency is honored even in the event of a system failure. Isolation: separates concurrent transactions from the updates of other incomplete transactions. SQL Server accomplishes isolation among transactions by locking data or creating row versions. Durability: After a transaction commits, the durability property ensures that the effects of the transaction persist even if a system failure occurs. If a system failure occurs while a transaction is in progress, the transaction is completely undone, leaving no partial effects on data. Transaction Dependencies In addition to supporting all four ACID properties, a transaction might exhibit few other behaviors (known as dependency problems or consistency problems). Lost Updates: Occur when two processes read the same data and both manipulate the data, changing its value and then both try to update the original data to the new value. The second process might overwrite the first update completely. Dirty Reads: Occurs when a process reads uncommitted data. If one process has changed data but not yet committed the change, another process reading the data will read it in an inconsistent state. Non-repeatable Reads: A read is non-repeatable if a process might get different values when reading the same data in two reads within the same transaction. This can happen when another process changes the data in between the reads that the first process is doing. Phantoms: Occurs when membership in a set changes. It occurs if two SELECT operations using the same predicate in the same transaction return a different number of rows. Isolation Levels SQL Server supports 5 isolation levels that control the behavior of read operations. Read Uncommitted All behaviors except for lost updates are possible. Implemented by allowing the read operations to not take any locks, and because of this, it won’t be blocked by conflicting locks acquired by other processes. The process can read data that another process has modified but not yet committed. When using the read uncommitted isolation level and scanning an entire table, SQL Server can decide to do an allocation order scan (in page-number order) instead of a logical order scan (following page pointers). If another process doing concurrent operations changes data and move rows to a new location in the table, the allocation order scan can end up reading the same row twice. Also can happen if you have read a row before it is updated and then an update moves the row to a higher page number than your scan encounters later. Performing an allocation order scan under Read Uncommitted can cause you to miss a row completely – can happen when a row on a high page number that hasn’t been read yet is updated and moved to a lower page number that has already been read. Read Committed Two varieties of read committed isolation: optimistic and pessimistic (default). Ensures that a read never reads data that another application hasn’t committed. If another transaction is updating data and has exclusive locks on data, your transaction will have to wait for the locks to be released. Your transaction must put share locks on data that are visited, which means that data might be unavailable for others to use. A share lock doesn’t prevent others from reading but prevents them from updating. Read committed (snapshot) ensures that an operation never reads uncommitted data, but not by forcing other processes to wait. SQL Server generates a version of the changed row with its previous committed values. Data being changed is still locked but other processes can see the previous versions of the data as it was before the update operation began. Repeatable Read This is a Pessimistic isolation level. Ensures that if a transaction revisits data or a query is reissued the data doesn’t change. That is, issuing the same query twice within a transaction cannot pickup any changes to data values made by another user’s transaction because no changes can be made by other transactions. However, this does allow phantom rows to appear. Preventing non-repeatable read is a desirable safeguard but cost is that all shared locks in a transaction must be held until the completion of the transaction. Snapshot Snapshot Isolation (SI) is an optimistic isolation level. Allows for processes to read older versions of committed data if the current version is locked. Difference between snapshot and read committed has to do with how old the older versions have to be. It’s possible to have two transactions executing simultaneously that give us a result that is not possible in any serial execution. Serializable This is the strongest of the pessimistic isolation level. Adds to repeatable read isolation level by ensuring that if a query is reissued rows were not added in the interim, i.e, phantoms do not appear. Preventing phantoms is another desirable safeguard, but cost of this extra safeguard is similar to that of repeatable read – all shared locks in a transaction must be held until the transaction completes. In addition serializable isolation level requires that you lock data that has been read but also data that doesn’t exist. Ex: if a SELECT returned no rows, you want it to return no. rows when the query is reissued. This is implemented in SQL Server by a special kind of lock called the key-range lock. Key-range locks require that there be an index on the column that defines the range of values. If there is no index on the column, serializable isolation requires a table lock. Gets its name from the fact that running multiple serializable transactions at the same time is equivalent of running them one at a time. Now that we understand the basics of what concurrency is, the subsequent blog posts will try to bring out the basics around locking, blocking, deadlocks because they are the fundamental blocks that make concurrency possible. Now if you are with me – let us continue learning for SQL Server Locking Basics. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Performance, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: Concurrency

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  • C# SQL Statement transformed TO LINQ how can i translate this statement to a working linq

    - by BlackTea
    I am having trouble with this I have 3 Data tables i use over and over again which are cached I would like to write a LINQ statement which would do the following is this possible? T-SQL VERSION: SELECT P.[CID],P.[AID] ,B.[AID], B.[Data], B.[Status], B.[Language] FROM MY_TABLE_1 P JOIN ( SELECT A.[AID], A.[Data], A.[Status], A.[Language] FROM MY_TABLE_2 A UNION ALL SELECT B.[AID], B.[Data], B.[Status], B.[Language] FROM MY_TABLE_3 B ) B on P.[AID] = B.[AID] WHERE B.[Language] = 'EN' OR B.[Language] = 'ANY' AND B.STATUS = 1 AND B.[Language] = 'EN' OR B.[Language] = 'ANY' AND B.STATUS = 1 Then i would like it to create a result set of the following Results: |CID|AID|DATA|STATUS|LANGUAGE

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  • With Monit, how do I restart a process when a directory timestamp check fails?

    - by Alterscape
    In my /etc/monit/monitrc I have the following lines: check process foo_server with pidfile /var/run/bwam_server.pid start program = "/Users/foo/foo_server.sh start" stop program = "/Users/foo/foo_server.sh stop" check directory foo_data path "/Users/foo/Library/Application Support/foo_server/data" if timestamp > 1 minute then alert #if timestamp > 1 minute then restart foo_server I know I shouldn't have some of this stuff in my home directory, but this aside: if I uncomment the last line, Monit tells me syntax error on foo_server -- but I am, as far as I understand, correctly defining the process -- how else do I reference it?

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  • Is it possible to interrupt or cancel the trash-delete process?

    - by pete
    I am connected to the company server, onsite not remote, which is Windows based. When, in the OS finder, I go to delete a file or directory that resides on the window-based server, the trash progress panel appears as usual. Not infrequently it will just hang there appearing to be active but no progress occurs on the progress bar. So the X is chosen to stop or cancel the process. A new panel appears, and while appearing to be active, again, just hangs there indefinitely. My lack of reputation prevents posting a screen shot - sorry. The question then is this: Is there a way via the Activity Monitor, Terminal, etc. to interrupt this deleting process in the Mac OS? Currently, I have to force shutdown and reboot to eradicate the ever-deleting panel. Finder relaunch does not solve and only eliminates the finder until I force reboot. Any assistance is appreciated. Thanks, Pete iMac, Mac OS X (10.6.8), i7-2.8ghz, 8gb ram

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