has been translated based on your browsers language setting. Discover and Share the best GIFs on Tenor. It's normal to feel giddy when you come across someone who really seems to have potential. Note: the article is dated from Dec 2008, i don't know whether this trick works with current versions of Chrome, it doesn't work for me with SRWare Iron Portable 3. The perfect Take A Break Iambrandon Relax Animated GIF for your conversation. You feel a crushing sense of disappointment if someone doesn't respond to you. You must use your mouse to click another tab and then click back on the tab you are trying to stop gif animation in. This is a temporary hack, until Google adds this functionality or a plugin is written.ī. Quizás éste es mi subconsciente diciendome que necesito un descanso. Maybe this is my subconscious telling me that I need to take a break. Necesito tomarme un descanso de todo esto. 'Some clitorises like very focused, targeted. ![]() Discover and Share the best GIFs on Tenor. que necesito darme un respiro (2) I need to take a break from all this. Boosting your sexual satisfaction with a vibrator can go beyond 1) take a vibrator and 2) put it on your clitoris. Dude Im Taking A Break Eric Cartman GIF SD GIF HD GIF MP4. When you scroll your browser or click the page, the gif will start animating again. The perfect Take A Break Break Sleep Animated GIF for your conversation. The perfect Dude Im Taking A Break Eric Cartman Kyle Broflovski Animated GIF for your conversation. This only stops the gif animation so that you can read without distraction. After all, we all need to recharge our batteries now and then. So whether you need to take a breather from your job or want to get away from the hustle and bustle of everyday life, these tips will help you get the break you need to relieve stress and improve your mental health. This also applies to a tough game which you believe you should’ve won but got screwed over for various reasons (we all have had those games aka 90 min 360 no. Go take a walk, have a drink, watch some videos, take your mind off the game for a bit. Have another tab open in your browser while you’re surfing, (if you don’t already).Ĭlick the other tab with your mouse, then click back to your original tab that had the animated gif.Ī. Amber Murphy Sometimes we need a break from life. If you’re on a 2+ games loss streak, you MUST take a minimum 20 min break. Nor is there a trusty Web Developer toolbar available to do away with them once and for all. ![]() The Esc key should stop animated gifs dead in their tracks, but it doesn’t. gif images in Google ChromeĪs we all know, the Escape key doesn’t work in the Google Chrome web browser.
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![]() There are still some awkward moments, like another venture into reggae on ‘Tropical Loveland’, but ABBA just about sustains momentum for a full album.ĪBBA embraced disco on their sixth album – the title track and ‘Angeleyes’ followed The Bee Gees onto the dance floor. ‘SOS’ wasn’t the only hit from ABBA – there’s also ‘Mamma Mia’ and ‘I Do, I Do, I Do, I Do, I Do’, while the forgotten glam of ‘So Long’ was actually the first single released from the record. Ulvaeus later stated that “ABBA found its identity as a pop group with the release of “SOS””. ![]() Despite the impressive achievement of creating a worthy comeback after so long away, Voyage still ranks in the lower half of ABBA’s discography.ĪBBA started to hit their stride with their third album. But there’s some genuinely strong material – ‘Don’t Shut Me Down’ is propulsive, the 1970s leftover ‘Just A Notion’ is a worthy addition to their stellar catalogue, and ‘Keep An Eye On Dan’ is fascinating. It’s often more kitsch than their 1970s heyday ‘Ode to Freedom’, ‘Bumblebee’ and the children’s choir of ‘Little Things’ all could have come from stage musicals. To ABBA’s credit, Voyage is a dignified return it follows the ABBA formula of catchy songs with dark undercurrents and it doesn’t chase trendy sounds. It’s unprecedented for a major group to release a new album after more than half a lifetime away. The minor hit ‘Honey Honey’ is pretty, but ABBA would release much stronger albums as they grew artistically. There’s oddball material like the reggae of ‘Sitting In A Palm Tree’ and the glam rock of ‘King Kong Song’. But like Ring Ring, Waterloo is the inconsistent output of a group searching for its identity. The title track of Waterloo famously won ABBA the Eurovision Song Contest, and it’s their first classic song. The single ‘Ring Ring’ was a minor hit, but it’s primitive compared to later triumphs. Despite the group’s collective talents, they hadn’t figured out their act – the men sing more often than on subsequent releases, and they try everything from country on ‘He Is Your Brother’ to a show tune on ‘I Am Just A Girl’. #9 Ring RingĪBBA didn’t yet have a name when they released their debut album – it was credited to Björn & Benny, Agnetha & Frida. Here are ABBA’s nine studio albums, ranked from worst to best. But looking back at their career in retrospect, they have albums that are enjoyable the whole way through. This is justified with regards to their early work – they were creating worldwide hits like ‘Waterloo’ before they started making solid albums. Pooling their talents the four became phenomenally popular in the 1970s, scoring worldwide hits like ‘SOS’, ‘Dancing Queen’, and ‘Take A Chance On Me’.ĪBBA have a reputation as a singles band rather than an albums band. Fältskog was already a solo star in Sweden, while Lyngstad had enjoyed smaller-scale success as a jazz singer. Ulvaeus and Andersson both enjoyed success in folk bands in the 1960s and formed ABBA’s songwriting team. On this list, Voyage is weighed up against the albums that ABBA released between 19.ĪBBA is a quartet of Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad. It’s not the longest gap between releases – niche groups like The Sonics, Fanny, Strawberry Alarm Clock, and The Standells have all taken longer between albums, but to less fanfare. It was the Swedish quartet’s first studio album in almost 40 years – an unprecedented gap in output for a superstar group. ![]() In November 2021, ABBA released their ninth studio album Voyage. ![]() We suggest converting into an MP4 container format so that you can get videos that are ready to upload to popular devices for portable use or streaming. It’s dependent on the gadget using which device to play the videos. ![]() Is WinX HD Video Converter Deluxe program is software for video conversion designed for people of all levels. With a custom quality level, you can choose the bitrate of the file output. It comes with a limited set of options to change the quality levels of the final file. ![]() If your television can be compatible with MKV or you download the codecs, then you’ll be able to view MKV videos.Ĭonvert To MP3 is a reliable MKV converter that allows you to convert supported audio and video format files into MP3 format. The software will be running right after the installation of the software is completed. ![]() The use of this tool is simple to use, which makes it ideal for users who are not familiar with it. It can convert MKV in any file format, and to any other format with lightning-fast speed and top-quality output. It also doesn’t save the converted file or saves it to an external server or cloud storage, which means it will not get into the wrong hands. The program is free of spyware and malware that could damage your system is included in the initial download. This program is meant for personal use only with private files that aren’t in violation of any user agreement. It is highly recommended however that the files converted don’t contain copyrighted content and should not be shared with anyone else. Select”Convert” or click the “Convert” button after you’ve selected the profile to convert and convert to your media file. The process could take some time, depending on your computer’s capabilities. Choose as well as a location for the date you converted and begin the file conversion. After that, select the converting option into AVI as well as MP4 output formats. Select your original parameters for subtitles and audio from the video information line. Please like and share this guide to help others.You can preserve the high-resolution video using the “Same as the source” profile. That's it! Let me know if this guide has helped you by leaving your comment about your experience. * Note: If you have audio delay problems while playing the converted MP4 video file, then from the main menu navigate to Tools > Track Synchronization and modify the Audio track synchronization setting (to positive or negative time), or – even better – convert your MKV to MP4 by using the MkvToMp4 converter. Navigate to the destination folder to find the converted mp4 video file* Wait until the MPV to MP4 converting process is complete.ġ2. Specify the destination and give a filename for the converted MP4 video file. At Audio codec tab, check both the Audio and the Keep original audio track checkboxes and then click the Save button.ĩ. At Video codec tab, check both the Video and the Keep original video track checkboxes.ħC. At the Profile select: Video –H.264 +MP3 (MP4) and then click the Settings icon next to it.ħB. mkv video file that you want to convert and click Open.Ħ. Launch VLC Media Player and from the main menu select Media > Convert/SaveĤ. Download and install VLC Media Player from: Ģ. How to convert MKV to MP4 in VLC Media Player (Windows & MAC)ġ. In this tutorial you can find detailed instructions on how to easily convert any MKV video file to an MP4 video by using VLC Media Player. Related article: Convert MKV to MP4 by using MkvToMp4 converter.mp4 video without loosing MKV's video quality. To bypass MKV compatibility, you can use the free VLC Media Player program to convert the. Also an MKV video cannot be added on iTunes which support only MP4 and QuickTime formats, or on the Sony Vegas video editing program. iPad Air, iPad Mini 4, iPad Pro, iPhone 6S, iPhone 6S Plus, iPod Touch 6, AppleTV) don't support it. The MKV (Matroska Multimedia Container) video format is a powerful video format that supports high definition quality, but Apple's devices (e.g. In some cases you have to convert MKV to MP4 video format, because the MKV video format is not compatible with all digital devices or Media Players. ![]() ![]() We used Program MARK to evaluate the influence of land cover on nest success. During 2014, 7 of 10 active nests fledged 22 chicks (3.1 chicks/successful nest) overall, 29 (2.9 chicks/successful nest) nestlings fledged in our study area. During the 2013 breeding season, 3 of 12 active nests fledged 7 chicks (2.3 chicks/successful nest). Apparent nest success was 25% in 2013, and 70% in 2014. n = 3), and residual corn ( Zea mays n = 1). Most northern harrier nests were in seasonal or permanent wetlands with cordgrass ( Spartina spp n = 12), bulrush ( Scirpus spp. During breeding seasons in 20, one breeding pair of northern harrier was found every 370.6 km 2. No golden eagle nest was documented in ED. Cottonwood ( Populus deltoides) was the sole tree of choice for nesting golden eagles in WD (n = 30) followed by steep cliff-side (n = 5). Overall, 41 golden eagle chicks successfully fledged 1.4 chicks/successful nest (SE = 0.09). Active nests of golden eagles were placed on two different substrates (i.e., steep cliff-side and trees ) and apparent nest success was 62% in 2013, 94% in 2014, and 87% in 2015. In WD golden eagle pairs were documented with one nest every 1740.4 km 2 for the duration of the study. Overall, 101 ferruginous hawk chicks fledged in ED 2.4 fledglings/successful nest, and 100 chicks fledged in WD 2.6 fledglings/successful nest. In ED, all ferruginous hawk nests were in trees, and apparent nest success was 62% in 2013, 94% in 2014, and 87% in 2015. In WD, we documented one breeding pair in 315 km 2. In a more suitable subset of 4420 km 2 in ED, we found one pair per 340 km 2. In ED, one pair of ferruginous hawk was found every 655 km 2. Using ground and aerial surveys, we located and monitored active ferruginous hawk, golden eagle, and northern harrier nests (ferruginous hawk, n = 55 golden eagle. During the breeding season from 2013–2015, we investigated the influence of factors associated with the landscape on survival and nest-site selection of ferruginous hawks, golden eagles, and northern harriers in the northern Great Plains (north-central South Dakota, south-central North Dakota hereafter, Eastern Dakota, and northwestern South Dakota hereafter, Western Dakota ). Northern harriers ( Circus cyaneus) prefer relatively open grasslands and wetland areas of various natures. Population trends of golden eagles in western United States are unclear although long-term monitoring of populations shows declines in occupancy and breeding performance. Golden eagles ( Aquila chrysaetos) are long-lived raptors with high nest-site fidelity and relatively low reproductive success. Their population reportedly declines in number if more than 30% of an area is cultivated and they rarely nest in areas dominated by croplands. Ferruginous hawks ( Buteo regalis) are a grassland and shrubland obligate nesting raptor and prefer lightly grazed pasture or idle areas for nesting. ![]() ThankyouWe are in need of a large tin bath - does anyone have any ideas of where we can get one from. See More User ( 12:56) We are in need of a large tin bath - does anyone have any ideas of where we can get one from. Please call nursery on 01 before 8.00pm this evening or message us on Facebook if you are interested. The dates are 11th and 18th May 9.30am to 4.00pm. We have free places available on our paediatric first aid course if any parents would like to attend. Thanks User ( 22:34) Fantastic opportunity available. ThanksAmendment to first aid The second date is 1st June not the 18th May. User ( 12:52) Nursery is closed on Monday! User ( 13:29) Please remember those sun hats and sun cream! □□□ User ( 23:14) Amendment to first aid The second date is 1st June not the 18th May. What Others Say about this business: User ( 21:10) Anyone know of a qualified plasterer that requires some work this weekend? Need a job in nursery completing. The staff within this room are supported by an early year's teacher and the team works well to ensure they provide play and learning experiences to cover all seven areas of learning. Preschool 3 years - 5 years This room accommodates 16 preschool children and has been designed to ensure children can move around safely and make choices for themselves. A variety of opportunities await the children in this room. Throughout the day the children experience opportunities appropriate to their age and stage of development. Tweenies - 2 years - 3 years This is a large room accommodating up to 15 children aged 2 years - 3 years. Our specially designed baby unit is fully equipped with a wide range of stimulating toys and play materials We aim to follow your baby's own individual routine in order to help him /her feel secure and settle into nursery quickly. There is also a separate sleep area and nappy changing area. Baby room - 3 months - 2 years This unit has a large open plan room that can be divided to accommodate babies of different ages. We have three main rooms in our nursery - babies, tweenies and preschool. Copies of our latest Ofsted report are available on request or can be found on the Ofsted website. More Information: We are registered with OFSTED (office for standards in Education) and follow the EYFS (Early Years Foundation Stage) throughout the nursery. ![]() “These are the times that try men's souls. Posted 06:40 (#3557212 - in reply to #3556638) Subject: RE: What is the difference between a dovetail and beavertail? Posted 21:32 (#3556716 - in reply to #3556695) Subject: Re: What is the difference between a dovetail and beavertail? I always thought one had feathers and one didn't! Posted 21:26 (#3556695 - in reply to #3556536) Subject: Re: What is the difference between a dovetail and beavertail? ![]() Posted 21:09 (#3556638 - in reply to #3556337) Subject: RE: What is the difference between a dovetail and beavertail? With a semi trailer, if it is hydraulic tilt, I always called those beavers. Was always under the impression that a dove was either fixed or manual tilt, like that on many 25 foot goosenecks, raise the deck, flip the stand and it's flat, lift the deck, fold the stand down and set the deck down and it's "doved". The tail adds another 7.75 to 12 inches (20 to 30.5 cm) to. (27 kilograms) and are 23 to 39 inches (60 to 100 centimeters) long. Posted 20:42 (#3556536 - in reply to #3556482) Subject: +1 The American beaver ( Castor canadensis) typically weighs 60 lbs. I would think that a dove tail is fixed while the beaver goes up and down like when it slaps water? Posted 20:29 (#3556482 - in reply to #3556112) Subject: Re: What is the difference between a dovetail and beavertail? ![]() I could see this thread taking a wrong turn. Posted 19:49 (#3556337 - in reply to #3556112) Subject: RE: What is the difference between a dovetail and beavertail? But again its not a defined term so I wouldn't assume anything when referencing one or the other. If I had to choose I would say more often I hear the dovetails are fixed with ramps and beavertail are hydraulic. There may be a difference historically but it doesn't seem to be known among anyone as the terms are used interchangeably for any type of tail fixed or hydraulic. Posted 19:04 (#3556160 - in reply to #3556112) Subject: Re: What is the difference between a dovetail and beavertail? Posted 19:02 (#3556154 - in reply to #3556112) Subject: Re: What is the difference between a dovetail and beavertail? Posted 19:02 (#3556153 - in reply to #3556112) Subject: RE: What is the difference between a dovetail and beavertail? Are they the same or is there actually a difference between the two? TIA What is the difference between a dovetail and a beavertail. I was talking to my neighbor the other day about stepdeck semi trailers and we got to talking about beavertail/dovetails. Beavertail - the back permanently angles down and may also have ramps that can fold down to the ground. the trailer is flat all the way to the rear end when the ramp/dovetail is raised. Posted 18:48 (#3556112) Subject: What is the difference between a dovetail and beavertail? I would not place money on this answer but, as I understand it: Dovetail - the ramp can be raised to becomes part of the deck when raised. What is the difference between a dovetail and beavertail? Jump to page : 1 Now viewing page 1 ![]() However, they must use builder units to collect supplies, with several needed to ensure funds are steady, and cannot build air units this is compensated by having more anti-air units than the other two factions. In addition, they do not require power for base structures, and any buildings that are destroyed will be automatically rebuilt if the enemy fails to destroy a tunnel entrance that is left behind. The Global Liberation Army rely on cheap units and terrorist-styled guerrilla combat to overcome opponents, in which several vehicle units can be upgraded by salvaging parts from defeated enemy vehicles (infantry can also claim this for funds), using specialised infantry units to create ambushes and considerable damage.However, their power plants can cause damage to surrounding units and buildings when destroyed, they maintain a weaker air force, and require large armies to make horde bonuses work effectively. In addition, their troop transports can detect stealth units, while their tanks and infantry can incur horde bonuses when grouped together. China relies on stronger tank and artillery units, and can use hackers to claim buildings or produce additional funds.In addition, they can improve power plants, their defensive structures link together to deal with enemy units, and they collect more supplies than the other two factions, but units are more expensive to produce. The United States rely on high-tech weaponry, such as drones, and a dominant air force to deal with opponents, and are able to use supply units to airdrop rifle infantry into occupied buildings, alongside flash grenades, to clear them out.Factions in the game function similar in how they operate, but maintain differences in units and strategies: In addition, players can also deploy superweapons which can decimate an opponent's forces, though must wait for a cooldown period to end before they can use it again. Training can be queued at production structures and units sent to rally points designated by the player, with the ability to research upgrades to improve certain units. Units that survive and manage to kill other units gain "veterancy" points, earning chevrons when they level up, effectively improve their abilities and making them more powerful at the highest level, it also grants the ability to repair any damage when out of combat. Success in the game relies upon making the most out of mixing units, utilising their advantages while countering their disadvantages with other units, in order to win against opponents - for example, rifle infantry are useful for countering anti-vehicle infantry, but need to rely on tanks to counter anti-infantry vehicles. anti-vehicle), while base structures are divided between unit production, support facilities, and defensive counter-measures. Various units types are available for training, ranging from infantry to ground vehicles and aircraft, each focuses on specific roles (e.g. Gameplay Ĭommand & Conquer Generals operates in a similar manner to that of other titles in the series - players construct bases and train units from these, acquiring resources on one of the game's maps to fund this, and then defeat their opponents by eliminating their bases and armies. The new game was part of the Generals franchise and was cancelled on Octoby EA after negative feedback during the closed alpha test. A sequel, Command & Conquer: Generals 2, was in development, until it was repurposed to a free-to-play game known as Command & Conquer. Both Generals and Zero Hour were met with highly positive reviews. An expansion pack, entitled Command & Conquer: Generals – Zero Hour, was additionally released for PC in 2003, and for Mac OS in 2004. ![]() Generals utilizes SAGE (Strategy Action Game Engine), an extended version of the Command & Conquer: Renegade 's 3D engine. In the game, the player can choose from three different factions: the United States, China and the Global Liberation Army (GLA). The Mac OS X version was re-released by Aspyr for the Mac App Store on April 12, 2004. The Windows version of Generals was developed by EA Pacific and published by EA Games, the Mac OS X version was developed by i5works and published by Aspyr Media. It was released for Microsoft Windows and Mac OS X in 20. Command & Conquer: Generals is a real-time strategy video game and the seventh installment in the Command & Conquer series. One of her other great ones is, 'You’ll be fine, honey, just don’t be yourself'. "She’s pretty great at taking the piss out of me and supporting me at the same time. Washington DCUpdated: Jan 30, 2021, 01:10 PM IST. "She said, 'Look, honey, there’s so many crap films made these days, so what if yours is just another one? Just go and make it'," he said laughing. Actor Simon Baker and his wife and actor Rebecca Rigg have called it quits after 29 years of marriage. So I don’t need to mark it with great things."ĭuring the interview, Baker also explained how his wife supported him when he made his directorial debut for the 2017 film Breath. Most of the time, 99 per cent of the time, we’re really great friends. "We’ve never really been big on it," he told People in 2018. However, Baker has shared a few things about their marriage, like the fact that they don't celebrate their wedding anniversary. Since then, the couple have kept their relationship relatively private. " the greatest woman any man could ever hope to make a life with." Simon Baker, protagonista de El Mentalista, se ha divorciado de Rebecca Rigg, la mujer que ha compartido su día a día con él durante los últimos 29 años, según ha informado el medio Fox News. "Marrying her was the best decision I ever made," Baker told The Daily Telegraph in 2015. The actors tied the knot in 1998, seven years after they first met. However, despite their public appearances, the former couple remained largely private and low-key.Since then, Baker has gone on to find fame as Patrick Jane in The Mentalist, while Rigg is best known for her roles in Fatty Finn and Ellie Parker. Early life Baker was born on 30 July 1969 in Launceston, Tasmania. Confidential, Margin Call & The Mentalist. He is known for his lead roles in the CBS television series The Mentalist as Patrick Jane and The Guardian as Nicholas Fallin and has starred in several Hollywood films. Family Family photo of the actor, married to Rebecca Rigg, famous for L.A. Rigg used to occasionally accompany Baker to premieres, award shows such as the Emmys and the Golden Globes, Vanity Fair's 2012 Oscars after-party, and other celebrity events. Simon Lucas Baker (born 30 July 1969) is an Australian actor in television and film, as well as a director. In the past years, they have mostly lived in Los Angeles and pursued their acting careers in Hollywood, where Baker filmed the popular CBS series 'The Mentalist', which aired between 20. One took place in Australia and the other, a smaller ceremony, was held in 1998 on the beach in Carmel, California, with Stella, then five years old, in attendance. The two tied the knot in 1990s in two separate ceremonies. However, they actually met on a blind date in 1991. ![]() The estranged couple played love interests on the short-lived 1990s Australian soap 'E Street'. ![]() Baker and Rigg share three children including 27-year-old Stella, 22-year-old Claude, and 19-year-old Harry. "We remain close friends and our three children will always be the most important focus of our lives," Baker and Rigg said in a joint statement. ![]() The long-time couple, who had quietly separated in April 2020, announced their split in a joint statement on Friday, reported E! News. Washington, January 30 (ANI): Actor Simon Baker and his wife and actor Rebecca Rigg have called it quits after 29 years of marriage. ![]() ![]() Have a quick look to learn more and get more insights from this very useful video. ![]() Choose a more flexible controller since the software has still a lot more to offer.įor beginners, this YouTube video can help you in maximizing the use of MIDI controllers to your Logic Pro X. So, see to it that your MIDI controller can keep up with the versatility of your software. Akai MPD and MPK Series MIDI Mapping to the Mixer in Logic Pro Logic Pro allows you to create and save templates, which act as starting places for your new projects. Plugins, Effects, and Sound - You know that Logic Pro X excels with onboard effects, sounds and more. Look for a controller that is handy enough to match the portability of the Logic Pro X. This ensures that you have a lightweight, yet still reliable controller to help you make beats on the go. Portability - You can use Logic Pro X on your iOS devices. Related: Best MIDI Keyboards for Ableton Live If you love drums, you should have a special look into the pads to see how well it handles finger drumming, effects and other sounds. MIDI pads - These are usually between 8-16 with three to four banks which are all assignable. When the controller is connected to your computer, all of Logic Pro X hardware controls are automatically assigned to Smart Controls and other functions. Mapping with Logic Pro X - Look for a MIDI controller that can be auto-mapped to the Logic Pro X. So, we give you some tips to be able to select the best that perfectly matches the quality and performance of Logic Pro X. Related: Best MIDI Keyboards for FL Studio But, if you’re not pairing it with a great MIDI controller, you can’t expect the software will do the things a great controller should perform. You can go endless checking the features of Logic Pro X and how great they are. I have an Akai mini MPK and a Maschine MK3 hooked up to it thru USB via an Alexis io2 interface and MIDI running from Maschine in and out from midi cables hooked up and through a MOTU MIDI hub. HOW TO CHOOSE THE BEST MIDI CONTROLLERS FOR LOGIC PRO X I have a newer Mac Studio m1 running Logic Pro on Mac OS Ventura. Need to unplug the USB cable to turn it off.Quite expensive for a MIDI controller with limited features. ![]() If our results must always be based on committed data, we need to be willing to wait for changes to be committed. In earlier versions of SQL Server, the tradeoff in concurrency solutions is that we can avoid having writers block readers if we are willing to risk inconsistent data-that is, if we use Read Committed isolation. The space in tempdb used to store previous versions of changed rows is called the version store. It is possible to avoid blocking because as soon as one of the new database options is enabled, SQL Server starts using tempdb to store copies (versions) of all rows that have changed, and it keeps those copies as long as there are any transactions that might need to access them. Conversely, a process requesting a shared lock does not block when the requested resource currently has an exclusive lock. Or, using locking terminology, a process requesting an exclusive lock does not block when the requested resource currently has a shared lock. The difference between optimistic and pessimistic concurrency is that with optimistic concurrency, writers and readers do not block each other. Exclusive locks can be acquired when you use optimistic concurrency, so you still need to be aware of all issues related to lock modes, lock resources, and lock duration, as well as the resources required to keep track of and manage locks. Starting in SQL Server 2005, optimistic concurrency is available after you enable one or both of the database properties called READ_COMMITTED_SNAPSHOT and ALLOW_SNAPSHOT_ISOLATION. Optimistic concurrency uses a new technology called row versioning to guarantee your transactions. Pessimistic concurrency uses locking to guarantee the appropriate transactional behavior and avoid problems such as dirty reads, according to the isolation level you are using. At the beginning of this chapter, I described two concurrency models that SQL Server can use. |