Boost Uses LeaseAssist For Global Expansion

Cloud EssentialsRun Critical Databasesin the CloudOracle has the most complete data management portfolio for any enterprise workload.Cloud computing is transforming business practices and simplifying data center operations. However, when it comes to moving critical database assets to the cloud, many IT leaders are cautious—and rightly so. They have seen the limitations of popular commodity cloud solutions, which mostly consist of fragmented hardware and software offerings that must be manually configured. IT pros must build their own platforms on top of the service provider’s commodity infrastructure, migrate their data, and then figure out how to keep everything in sync with the apps and data still maintained on premise.Oracle Autonomous Database provides enterprise-level scalability, security, performance, and automation—at a level that often exceeds what you can achieve in your own data center. You can subscribe to complete database platforms with a few clicks, eliminating the need to provision, build, and manage in-house databases and storage systems. With pay-as-you-grow configurations—all managed by Oracle experts—your organization will obtain operational flexibility with zero up-front capital expenses. It’s a great way to lower operational costs becauseyou pay only for what you use.Read on to discover what a powerful cloud database can do foryour business.1C arl W. Olofson and David Schubmehl, “Oracle’s Autonomous Database: AI-Based Automation for Database Management and Operations,” IDC report, February 18, 2018, /us/products/database/idc-oracles-autonomous-database-4497146.pdf.Migrating to a Cloud Computing ModelModern businesses depend on their data more than ever before. That data is coming at an alarming rate, placing crushing demands on data marts, enterprise data warehouses, and analytics systems.Some businesses look to the cloud to help solve these scalability issues. However, most cloudproviders simply move familiar data management problems to a new infrastructure, and it’s up to you to keep the entire platform running efficiently. Industry research firm IDC found that as much as 75 percent of the total cost of database management can be attributed to labor.1Developing new applications using a cloud model can boost efficiency and reduce costs, but how do you achieve results that completely transform your business? The key to achieving this type of IT transformation is to move both existing and new applications to the cloud. To that end, Oracle’s complete cloud offering delivers a comprehensive data ecosystem in which a broad set of relatedcloud services work together automatically— and in many cases, autonomously.Oracle Cloud and Oracle Autonomous Database run on Oracle Cloud Infrastructure, a second-generation cloud offering that runs enterprise applications and databases with exceptional performance, scalability and security. For example, Oracle Cloud Infrastructure allows customers to independently scale compute and storage resources without restarts, instantly meeting the needs of any size business.All Oracle Cloud database offerings are 100 percent compatible with Oracle Database instances that have been deployed on premise, ensuring asmooth transition to the cloud and a flexible hybrid management strategy. You can migrate yourdatabases to Oracle Cloud with a single click, then monitor the environment in the same way that you monitor your on-premise databases—all from a single console. You can do it yourself or you can let Oracle handle everything for you, including backups, software patches, and upgrades.The World’s First and Only Autonomous DatabaseOracle Autonomous Database represents four decades of innovation with machine learning (ML) technology. This revolutionary database management system is available in two unique offerings.• O racle Autonomous Data Warehouse allows you to deploy new data marts, data lakes, and data warehouses to the cloud—or move existing ones from your datacenter to the cloud.• O racle Autonomous Transaction Processing is designed for high-performance, mission-criticaldatabases, mixed workloads and OLTP workloads.Both offerings are powered by Oracle Exadata, a high-performance database platform engineered for exceptional scalability, availability, and performance. Oracle automates patching, upgrades, and tuning—including performing all routine maintenance tasks while the database management system is running, without human intervention. Manually managed databases simply can’t compete. Oracle Autonomous Database leads the industry in price, performance, availability, and security.Self-driving.Oracle Autonomous Database eliminates human error whenprovisioning, securing, monitoring, backing up, recovering,troubleshooting, and tuning your database. In addition toreducing the need for manual input, it cuts costs and allowsyour IT staff to concentrate on higher-value tasks. And withadaptive machine-learning algorithms, the database canautomatically tune itself—allowing you to submit queries,visualize data, and share results without getting boggeddown by mundane data management tasks.Self-securing.Devastating security lapses can occur if patches are notapplied in a timely manner. Oracle Autonomous Databasepatches itself to avoid human errors or omissions. Itautomatically applies the latest security patches, reducingvulnerability and minimizing application downtime.Always-on encryption lets you control your own keysto further enhance security. Oracle Data Safe, now includedwith Autonomous Database, mitigates risk from risky users,sensitive data and misconfigurations.Self-repairing.Oracle Autonomous Database automatically recoversfrom any physical failures—at both the server and datacenter levels. In addition, by applying software updatesacross multiple nodes within a cluster, it ensures yourapplications remain online. With Artificial Intelligencediagnostics, Oracle Autonomous Database detectserrors by continually gathering statistics, analyzing theroot cause of problems, and resolving them quickly. Ituses AI to deliver unprecedented reliability, performance,and elasticity for deployments.For most businesses, success depends on maintaining system uptime. This requires a cloud architecture that can handle every threat that arises, from software and hardware failures to natural disasters and cyber attacks. However, despite the capabilities and convenience of cloud computing, these online systems have expanded the potential attack surface and introduced new risks, a situation that is exacerbated by today’s highly mobile workforce.As cyberthreats become more frequent and sophisticated, it is critical for businesses to ensure the resilience of their data and systems. Yet due to a significant shortage of cybersecurity expertise, it’s difficult to find enough security operations professionals to protect these systems. It’s an expensive problem: According to Security Today, the average cost of a data breach in 2018 wasUS$3.86 million, up 6.4 percent from the previous year, and the average cost of each stolen record containing sensitive and confidential information was US$148—a 4.8 percent increase from the previous year.2Autonomous technologies allow you to discover data breaches more quickly and often avert thementirely, reducing risks by using machines to fightmachines. Oracle Autonomous Database uses AIand machine learning technology to automate yourcyberdefenses. In addition, Oracle automaticallyapplies patches across the entire stack of softwarethat supports your applications, even whilethose apps are running—increasing uptime andminimizing the risk of human error.All Oracle Database access is monitored, recorded,and can be audited at any time. The data isencrypted—both in transit and while at rest. Oraclealso makes it easy to redact sensitive application-layer data, restrict privileged-user capabilities, maskdata in nonproduction environments, and monitorall user activities. Administrative access to yourOracle Database environment includes multiplesecurity zones to restrict access on a need-to-knowbasis for all IT staff. Oracle Data Safe adds securityand compliance solutions to mitigate risks thathave traditionally been considered the customers’responsibility, including risky users, sensitivedata and misconfigurations. Data Safe providessecurity risk assessments, user risk assessments,database activity auditing, sensitive data discoveryand data masking all in a simple, unified securitycontrol center.Did you know?Through 2022, Gartner projects that the cloudservices industry will grow nearly three times asfast as the IT services industry as a whole.32S 3“Cloud security for the entire lifecycle of data.• Data is encrypted by default in the cloud (in transit and at rest)• Data is classified for risk• Data is masked for DevTest activitiesIntelligent Business Analytics Require AutomationTraditionally, database administrators viewed each database deployment as unique. They were responsible for building, securing, repairing, tuning, and maintaining database assets. These endless cycles of maintenance required lots of skilled personnel, raising overall costs. Oracle Autonomous Database automates this lifecycle so you can innovate more, spend less, and keep your data secure.For example, Oracle Autonomous Data Warehouse gives you an easier way to store, access, and manage your analytics data. The self-tuning capabilities are preconfigured for automated patches and upgrades, helping you eliminate manual, error-prone management processes. The database detects available patches and automatically applies them, without human intervention. You can deploy a data warehouse in the cloud in 15 minutes, then expand or shrink computing and storage resources independently, with no downtime. You can also access cloud-based business intelligence and data integration services. Provisioning, patching, software updates, performance tuning, backups, and securitypatches are performed automatically.Automated Database ProvisioningRapid Provisioning ProcessesProvisioning an on-premise database is often a lengthy process, including finding space in the data center, procuring hardware resources, setting up storage volumes, allocating memory, configuring database instances, and much more. Oracle simplifies the provisioning process via a cloud portal interface and APIs that integrate with any management or orchestration tool. You can have a fully configured OracleAutonomous Database instance up and running in less than five minutes. After that, new database instances can be provisioned in minutes. This highly efficient model avoids the burden of having to maintain extra capacity.1Choose Autonomous Data Warehouse or Autonomous Transaction Processing.2Specify the name of the database.3Select how many CPU cores you need for your service.6Specify whether you want to use existing licenses or subscribe to new database licenses.A six-step process.Did you know?A full 71 percent of AI leader organizations have experienced revenue growth of more than 10 percent in the past two years, versus only 33 percent of AI laggards.44H arvard Business Review, “The Rise of Intelligent Automation: Turning Complexity into Profit,” HBR Pulse Survey, /a/ocom/docs/artificial-intelligence/hbr-pulse-survey.pdf.4Select thestorage capacity.5Set up administrator credentials.Autonomous Database Use CasesYou can migrate any OLTP or data warehouse workload to Oracle Autonomous Database and scale it as needed. There are several popular use cases.Application development and testing.DevTest is one of the leading use cases for the public cloud. Many companies form DevOps teams in which developers collaborate with operations personnel to create, test, troubleshoot, and improve applications as part of a continuous flow.These no-cost tools enable you to develop applications on top of Oracle Autonomous Database:• O racle Application Express (APEX) enables fast, low-code application development• O racle REST Data Services provides a seamless interface between Oracle Autonomous Database and anytechnology that can interact with RESTful services• O racle SQL Developer Web is available directly from the Oracle Autonomous Database service console• O racle Developer Cloud Service enables agile development methodologies and DevOps automation Sandbox environments.Some Oracle Database customers use Oracle Autonomous Database as a staging ground to practice upgrade procedures or try out new database features, such as transportable table spaces and pluggable databases. If you make a mistake, you can easily delete the database instance and start over.Data warehouses.Oracle Autonomous Database is ideal for data warehouse workloads, especially when a diverse or geographically dispersed workgroup needs to access analytics services.It reduces the cost and complexity of managing the infrastructure, allowing analysts to focus on extracting valuefrom their data. Once your data warehouse is in the cloud, people can access it from anywhere, allowing your entire team to utilize data warehouse assets and data to flow easily to key destination points—including to Oracle’s cloud-based business intelligence engine.Migrating Existing Workloads to the CloudDiscovering New Monetization OpportunitiesHigh-Performance Data ManagementFor high-performance data warehouses and OLTP applications, consider Oracle Autonomous Transaction Processing. Designed for high-performance, mission-critical databases and mixed workloads, this OLTP service delivers extreme performance for instant analytics. Backup and disaster recovery services.Oracle Database Backup Cloud includes enterprise-grade data encryption, compression, and protection for automated backup of your cloud data. You can also use Oracle Cloud to establish an offsite disaster recovery service, complete with Oracle Data Guard and Oracle Active Data Guard. Many customers use their backups as standby databases for reporting and analytics.Enterprise data warehousing Sandbox Environment Line-of-business data martsBackup and disaster Recovery to the CloudMigrate existing applications to Autonomous DatabaseData warehousing and cloud compute analytics High-performance data management Expansion of data warehouse to Oracle Big Data CloudYour Automated FutureAI technology is fundamentally altering enterprise computing by changing how organizations receive, manage, and secure business data. By 2025, Oracle predicts that 90 percent of all applications and services will incorporate AI at some level—and more than halfof all enterprise data will be managed autonomously. Oracle Autonomous Database represents an entirely new category of software based on machine learning that allows you to focus on your core business, worry less about day-to-day operations, and create opportunities for innovation. Oracle Cloud puts these emerging technologies to work by enabling customers to establish new IT capabilities quickly, affordably, and securely.Intelligence at every layer.Oracle’s complete, integrated cloud platform includes intelligent solutions that span the SaaS, PaaS, and IaaS layers. For example, Oracle embeds AI across its business applications to enable new, intelligent experiences. Oracle also extends ML into Oracle Autonomous Database—the world’s first and only self-driving database. It’s all deployed on a next-generation cloud infrastructure that provides the foundation for intelligent cloud services. Oracle is the only company delivering a complete and integrated set of cloud services, and the only company building intelligent solutions at every layer.sets Oracle apart from other DBaaS providers.registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their respective owners.VDL51082 191022。

Vehicle Ident. No. _______________________Working instruction for order no.! Maintenanceat 60,000, 120,000, 180,000, 240,000 km etc./36,000, 72,000, 108,000, 144,000 miles etc.(Labour operation 03 16 00 ..)For a description of the various models, see Technical Manual Mix fuel in fuel tank with additive (Keropur from Porsche; Part No. 000 043 206 89)The term 'checking' includes all necessary subsequent work, such as adjusting, readjusting, correcting and topping up, but does not include repairing, replacing and reconditioning parts or assemblies.Change engine oil and oil filter (please observe oil change service plan for the 911 Carrera, Boxster and Cayman)"Note: If the mileage for a regular service is not reached, maintenance must be carried out after 4, 8, 12...... years.911 Carrera (997), 911 Carrera S (997)Boxster (987), Boxster S (987)as of 2009 modelDiagnostic system: read out fault memory; reset maintenance intervalVehicle underbody and engine compartment:visual inspection for leaks (oils and fluids)and chafing damage (lines and hoses)Continued overleaf Copyright byElectrical equipment, warning and indicator lights: check operationVehicle lighting: check operationAll headlights: check adjustmentHorn: check operationHandbrake: check free play of handbrake leverExhaust system: visual inspection for leaks and damage, check engine mountBrake hoses and lines: visual inspection for leaks, damage, routing and corrosionSteering gear: visual inspection of the bellows for damageTie rod joints: check the play and dust bootsSeat belts: check operation and conditionAir cleaner: replace filter elementFuel system: visual inspection for damage, routing and secure fit of line connectionsParticle filter: replace filter elementDrive shafts: visual inspection of the boots for leaks and damageBrake system: visual inspection of the brake pads and brake discs for wearTyres: check condition and tyre pressureCheck the door locks, lid locks and safety hooks of the front lid to ensure that they are secure and functioning properly Axle joints: check the play and visually inspect the dust boots for damageVehicle underbody and engine compartment: visual inspection for leaks (oils and fluids) and chafing damage (lines and hoses)Underbody panels: visual inspection for completeness, secure installation and damageCoolant hoses: check conditionRadiators and air inlets: visual inspection for external contamination and blockageCoolant: check level and antifreezeWindscreen wiper/washer system, headlight cleaning system: check fluid level and nozzle settings,check antifreeze in winter months; check wiper bladesReplace spark plugs: see Additional maintenanceBattery: check functional state and fluid levelpy g y Dr. Ing. h. c. F. Porsche AGAfter Sales EngineeringPrinted in Germany - 11/08Vehicle Ident. No. _______________________Working instruction for order no.! Additional maintenance for spark plugs(Labour operation 03 81 00 ..)"! Additional maintenance for drive belt (Labour operation 03 60 00 ..)! Additional maintenance for convertible top(Labour operation 03 70 00 ..)! Additional maintenance every 90,000 km/54,000 miles or every 6 years (Labour operation 03 83 00 ..)as of 2009 modelService and maintain convertible top (911 Carrera only)every 30,000 km/18,000 miles or every 2 years Replace spark plugs every 30,000 km/18,000 miles or every 4 years Check drive belt every 60,000 km/36,000 miles or every 4 years every 150,000 km/90,000 miles or every 10 years Check drive beltCheck drive belt every 240,000 km/144,000 miles or every 16 years Boxster (987), Boxster S (987)R l d i b lt911 Carrera (997), 911 Carrera S (997)Controlled all-wheel (only Carrera 4) : change oil! Additional maintenance every 180,000 km/108,000 miles or every 12 years(Labour operation 03 88 00 ..)! Every 2 yearsFile condition report for long-life guarantee! Every 4 years! After 4 years, then every 2 years! After 4, 8, 10 years, then every 2 yearsSignature (mechanic): _______________________________Test drive:Oils, fluids: visual inspection for leaksSignature (final check): _________________________Remote control, front seats, footbrake and handbrake (also actuation travel), engine, clutch, steering, transmission, ParkAssist, cruise control, PSM switch, PASM switch, Sport switch, heating, air conditioning and instruments: check operation Manual transmission: change oilAncillary unit mounts and suspension: visual inspection of all rubber mountings and boots for damageChange brake fluidReplace tyre sealantCheck tyre pressure monitoring system batteryPDK transmission: change clutch fluidReplace drive belt PDK transmission: change transmission oilAll-wheel final drive: change oil (911 Carrera only)Copyright byDr. Ing. h. c. F. Porsche AGAfter Sales EngineeringPrinted in Germany - 11/08Porsche Centre。

datasourcedisableexception takelast -回复什么是"datasourcedisableexception takelast"异常，以及在该异常出现时应该如何处理。

“datasourcedisableexception takelast”是一个在软件开发中可能会发生的异常。

它通常是指一个数据源被禁用或无法访问的情况，并且"takelast"部分表示系统将采取的措施，即选择最后一次有效的数据源。

当应用程序或软件依赖于数据源进行数据收集、处理或呈现时，这种异常可能会导致程序无法执行，从而影响用户体验以及系统的正常运行。

出现"datasourcedisableexception takelast"异常的原因可能有很多。

例如，数据源可能由于网络连接问题、配置错误、权限限制、硬件故障或数据库错误而被禁用。

当数据源无法提供所需的数据或服务时，系统将抛出这个异常，并且可能会选择从备用数据源中获取数据以避免程序中断。

处理这种异常需要一定的技术和经验。

下面将逐步说明如何处理这种异常。

第一步，确定异常的根本原因。

首先，需要检查网络连接是否正常。

如果网络连接存在问题，可以尝试重新连接或修复网络。

如果数据源是基于数据库的，还应检查数据库的连接状态和配置是否正确。

如果数据源受到权限限制，需要确保应用程序有足够的权限来访问数据源。

通过排除可能的故障，可以更容易地定位和解决问题。

第二步，备份数据源。

在发现数据源出现异常时，系统可以采取预设的措施来选择最后一次有效的数据源。

这意味着系统会从备用数据源中获取数据以进行后续的处理或呈现。

备用数据源可以是另一个相同类型的数据源，或者是一个不同类型的数据源，只要能提供所需的数据即可。

第三步，提供错误提示和解决方案。

当系统抛出"datasourcedisableexception takelast"异常时，用户需要清楚地了解发生了什么错误以及如何解决问题。

DARPS 232High precision absolute and relative positionDARPS 232 is a GPS/GLONASS based system which uses simultaneously gathered GPS/GLONASS data from high performance sensors on remote and own vessel to compute distance to target (DT) and bearing to target (BT). Relative position will be availableat short and long distances with a worldwide accuracy of 20 cm andis independent of differential correction data. For computation of absolute position, differential corrections are used. The absolute position is available with a worldwide accuracy of 20 cm in High Precision mode utilising commercial subscription services. In addition the DARPS system also makes use of free-to-air SBAS correction signals such as WAAS, EGNOS and MSAS. These correction signals can be received and used free of charge.Combining GPS and GLONASSAdding GLONASS to GPS improves all aspects of satellite navigation. With more observations available for position calculation, the accuracy, availability and integrity of the system is greatly enhanced when operating in challenging environments.Trustworthy and reliableThe DARPS product has been in the market for 20 years and is recognized as one of the most suitable positioning solutions for shuttle tanker offshore operations. The quality of a combined GPS/ GLONASS system for DP operation has been improved through along and incremental development cycle. DARPS is designed to ensure continuous and reliable operation. New hardware technology tailored for maritime use and advanced modular software design in a networked architecture ensure a robust and stable performance.DP interfaceThrough the years, the DARPS system has been modified and improved to meet the demanding requirements for an accurate and reliable positioning sensor to the DP system. This includes features such as direct target selection by the DP, transfer of gyro information from the DP to the DARPS system and continuous updates of absolute and relative positions to the DP. All data interfaces, such as telegram formats, update rates and communication formats are duly in line with the prevailing DP specifications.Radio communicationData between the two DARPS systems are transferred by UHF transceivers operating in the 450 MHz band, 455 MHz band or 860 MHz band. The data are transmitted using a TDMA protocol, which enables two-way communication between the two systems. UHF frequency configuration flexibility ensures reliable and safe operations in areas with high radio communication activity.Lever arm compensationBuilt-in lever arm compensation enables selection of several measurement points on the vessel. It is possible to establish and correct loading and offloading points both on-board the shuttle tanker and the FPSO/FSU. The selected monitoring points will bethe basis for the distance calculations during relative position mode operation. Heading input is necessary to utilise the built-in lever arm compensation.Real-time situational awarenessA new operator software has been developed in close co-operation with DP operators for the new generation DARPS system. Operators need to assess the quality of their absolute and relative position quickly and efficiently. The primary goal of the HMI is to enable the operator to instantly identify and to react safely to critical situations. Several views tailored for different vessel operation modes are available.System diagnostics made easyDARPS offers a set of graphical views for easy and effective on-board system diagnostics. In addition, sensor data and telegram outputs are automatically logged by the system. A data export tool provides an easy way of exporting data from the system to a USB disk media, either for documentation, post-processing or diagnostics.System verificationReduce the risk of costly downtime by verifying your DARPS system before arriving at the location. A new tool has been developed fora quick verification of the DARPS UHF radios prior to an offshore loading operation. The test will run through all the radios sequentially and indicate if the radio units are operating as required. A redundant DARPS system is required to run the test.HIGH PERFORMANCE POSITION REFERENCE SYSTEM FOR OFFSHORE LOADING DARPS is a DP position reference system tailor made for offshore loading operations. The DARPS system combines high performance sensors for reliable and accurate absolute and relative positioning of two vessels such as a shuttle tanker and a FPSO/FSU.PERFORMANCERTK horizontal accuracy 1 cm + 1.6 ppm RMSRTK vertical accuracy2 cm + 3.2 ppm RMS XP/G2 horizontal accuracy 10 cm, 95 % CEP XP/G2 vertical accuracy 15 cm, 95 % CEPDGPS/DGLONASS position accuracy < 1 m, 95 % CEP, 0.4 m, 1 σSBAS accuracy < 1 m, 95 % CEP, 0.6 m, 1 σVelocity accuracy0.05 m/s, 95 % CEP, 0.2 m/s, 1 σRelative position accuracy 0.2 m, 95 % CEP1Output rate1 HzAll accuracy specifications are based on real-life tests conducted in the North Sea under various conditions. Operation in other locations under different conditions may produce different results.INTERFACESSerial ports 8 isolated ports, 6 configurable between RS-232 and RS-422Ethernet/LAN 4USB 3DATA OUTPUTSMessage formats NMEA 0183 v 3.0, Proprietary Message types ABBDP, ARABB, DPGGA, DTM, GBS, GGA, GLL, GNS, GRS, GSA, GST, GSV, PKNOR, PSKPS, PSKRB, RMC,VBW, VTG, ZDADATA INPUTSDGPS/DGLONASS corrections RTCM-SC104 v 2.2, 2.3, Seastar XP, Seastar G2RTK corrections RTCM-SC104 v 2.3, 3.0, 3.1 and CMR Gyro compass NMEA 0183 HDT, HRC, HDM, EM3000, PSXN10, PSXN 23 and Robertson LR22 BCD format WEIGHTS AND DIMENSIONSDARPS 232 Processing Unit 5.4 kg, 89 mm x 485 mm x 357 mm DARPS HMI Unit 3.8 kg, 44 mm x 485 mm x 330 mm Radio Units 3.0 kg, 44.5 mm x 482 mm x 370 mm GNSS antenna 0.5 kg, 69 mm x 185 mm IALA becon antenna 1 kg, 1000 mmUHF 450 antenna 1.3 kg, 1400 mm, 6 cm max ⌀UHF 860 antenna1.4 kg, 1510 mm1 Requires 4th generation DARPS system on both shuttle tanker and FPSO/FSU.2 Recommended +5 to +40 °C3 Recommended +5 to +40 °CPOWER SPECIFICATIONSDARPS 232 Processing Unit 100 to 240 V AC, 50/60 Hz, max. 60 W DARPS 232 HMI Unit 100 to 240 V AC, 50/60 Hz, max. 40 W Radio Units 100 to 240 V AC, 50/60 Hz, max. 15 W GNSS antenna 5 V DC from Processing Unit IALA beacon antenna 10.2 V DC from Processing UnitENVIRONMENTAL SPECIFICATIONS Operating temperature range DARPS 232 Processing Unit -15 to +55 °C2DARPS 232 HMI Unit -15 to +55 °C3Radio Units 0 to +55 °C GNSS antenna -40 to +85 °C IALA beacon antenna -55 to +55 °C UHF antennas -30 to +70 °CHumidityDARPS 232 Processing Unit Max. 95 % non-condensing DARPS 232 HMI Unit Max. 95 % non-condensing Radio Units Max. 95 % non-condensing GNSS antenna Hermetically sealed IALA beacon antenna Hermetically sealed UHF antennas Hermetically sealedMechanical VibrationIEC 60945/EN 60945Electromagnetic compatibility Compliance to EMCD,immunity/emission IEC 60945/EN 60945Product safetyCompliance to LVD, standard usedIEC 60950/EN 60950PRODUCT STANDARDS IMO regulations MSC.112(73) M SC.113(73) M SC.114(73) M SC.115(73)IEC standards IEC 61162-1 IEC 60945 IEC 61108-1UKOOA compliantSpecifications subject to change without any further notice.KONGSBERG SEATEXSwitchboard: +47 73 54 55 00Global support 24/7: +47 33 03 24 07E-mailsales:****************************.com E-mailsupport:******************************.com/maritimeF e b r u a r y 2021FEATURESIALA antennaGPS/Glonass。

2-BAY NASData SheetCentralize your storage and backups with a complete network storagesolution and private cloud for small businesses.The Seagate® Business Storage 2-bay NAS is a complete network storage solution designedto keep businesses with up to 20 employees productive by creating a secure private cloud.With the included backup software for Windows®, Time Machine® compatibility and RAIDprotection, it’s simple to keep your critical business files protected. The Business Storage2-bay NAS creates a shared space for your colleagues and clients to collaborate by storingfiles centrally. With the Global Access™ service, you can stay connected to your businessfrom anywhere in the world with free apps for iPhone®, iPad® and Android® devices.The Business Storage 2-bay NAS features a Web interface where clients and coworkers cansecurely download and upload large files. Unlike typical cloud storage services, you retaincomplete ownership and control of your data. Plus, it is so easy to set up and use that there’sno need to hire an IT professional.The Business Storage 2-bay NAS comes with everything your business needs to ensurecomplete protection for all the files stored on PC and Mac® computers in your business. Theincluded BlackArmor® backup software for Windows® PCs will take the hassle out of backingup multiple computers by automating the process. The software helps you protect databy backing up not only the files you store, but also the programs, settings, email and eventhe operating system on your local PCs. With this level of protection, you can restore theentire hard drive on a PC that has suffered a hardware failure. By supporting Time Machine®software, the Business Storage 2-bay NAS offers the same level of data protection for all theMac computers in your business.AMERICAS Seagate Technology LLC 10200 South De Anza Boulevard, Cupertino, California 95014, United States, 408-658-1000 ASIA/PACIFIC Seagate Singapore International Headquarters Pte. Ltd. 7000 Ang Mo Kio Avenue 5, Singapore 569877, 65-6485-3888 EUROPE, MIDDLE EAST AND AFRICASeagate Technology SAS 16–18, rue du Dôme, 92100 Boulogne-Billancourt, France, 33 1-4186 10 00© 2013 Seagate Technology LLC. All rights reserved. Printed in USA. Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. BlackArmor and Global Access are either trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. All other trademarks or registered trademarks are the property of their respective owners. When referring to drive capacity, one gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes. Your computer’s operating system may use a different standard of measurement and report a lower capacity. In addition, some of the listed capacity is used for formatting and other functions, and thus will not be available for data storage. The export or re-export of hardware or software containing encryption may be regulated by the U.S. Department of Commerce, Bureau of Industry and Security (for more information, visit ), and controlled for import and use outside of the U.S. Complying with all applicable copyright laws is the responsibility of the user. Seagate reserves the right to change, without notice, product offerings orspecifications. DS1777.1-1301 EMEA1 One gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one thousand billion bytes when referring to drive capacity.The Business Storage 2-bay NAS includes government-grade hardware encryption technology that helps protect data stored on the NAS.When you access files remotely, the 2-bay NAS also helps protect your data-in-flight with SSL/TLS, the same technology that secures your information when banking online.The 2-bay NAS features a Universal Storage Module (USM ™) slot that makes it incredibly simple and cost-effective to create off-site backups of your data. Start by docking a Seagate ® Backup Plus portable drive in the USM slot. With a touch of a button, you can transfer large files at speeds up to 3× faster than USB 2.0. Undock your portable drive and data, and you’re ready to take your files with you or to a secure, off-site location.The USM slot is also convenient for photographers, videographers and other professionals who routinely bring back large files from the field. Use a Backup Plus portable drive throughout the day and when you’re back at the office, slide the portable drive into the USM slot and—with a touch of a button—all of your work is transferred to a designated folder on the 2-bay NAS.2-BAY NAS。

loadacceleratorsa函数使用方法`LoadAcceleratorsA`是Windows API中用于加载加速键表的函数。

这个函数的目的是为了加载指定资源中的加速键表，通常在使用`TranslateAccelerator`函数时需要先加载这个加速键表。

以下是`LoadAcceleratorsA`函数的使用方法：1.包含头文件：在您的源文件中包含Windows API的头文件：```c#include<windows.h>```2.声明变量：声明`HINSTANCE`类型的变量，用于指定资源所在的实例句柄，以及`HACCEL`类型的变量，用于存储加载后的加速键表句柄：```cHINSTANCE hInstance;//指定资源所在的实例句柄HACCEL hAccelTable;//存储加载后的加速键表句柄```3.调用`LoadAcceleratorsA`函数：使用`LoadAcceleratorsA`函数加载加速键表。

通常，您需要提供资源的实例句柄和资源ID：```chAccelTable=LoadAcceleratorsA(hInstance,MAKEINTRESOURCEA(IDR_ACCELERATOR1));```这里的`IDR_ACCELERATOR1`是您在资源文件中定义的加速键表资源ID。

4.检查加载是否成功：检查`LoadAcceleratorsA`的返回值，如果加载成功，返回的是加速键表的句柄，否则为`NULL`：```cif(hAccelTable==NULL){//加速键表加载失败的处理}```5.在消息循环中使用`TranslateAccelerator`函数：在消息循环中使用`TranslateAccelerator`函数来处理加速键消息：```cwhile(GetMessage(&msg,NULL,0,0)){if(!TranslateAccelerator(hwnd,hAccelTable,&msg)){TranslateMessage(&msg);DispatchMessage(&msg);}}````TranslateAccelerator`会检查消息是否是加速键消息，如果是，则执行对应的操作。

Synology DS1819+ is an 8-bay NAS designed for small and medium-sized businesses, providingoutstanding performance with great expandability. With various built-in applications and comprehensive data protection technologies, DS1819+ fulfills different business needs while safeguarding users' valuable digital assets. DS1819+ is backed up by Synology's 3-year limited warranty.DiskStationDS1819+Highlights• Quad-core, 2.1 GHz CPU with AES-NI encryption engine• 4 GB DDR4 memory pre-installed, expandable up to 32 GB 1• Superior sequential throughput at over 2,045 MB/s reading and 656 MB/s writing 2• Boost IOPS performance with M.2 NVMe/SATA SSD cache through optional M2D18 adapter card 3• Four Gigabit LAN ports (RJ-45) with failover and Link Aggregation support; Optional 10GbE add-on card provides high-speed data transfer rate • Scalable up to 18 drives with two expansion unit DX517 to meet high capacity demands 4• Ready for deploying dynamic virtualization environments includes VMware vSphere, Microsoft Hyper-V, Citrix XenServer and OpenStack CinderScalable Storage with Outstanding PerformanceDS1819+ is an 8-bay desktop network attached storage built with great scalability and performance, ideally suitable for growing businesses. You can easily scale it up to 18 drives with two expansion unit DX5174 when needing more storage capacity. In addition, M.2 SSD adapter M2D183 is available for you to supercharge the random IOPS through SSD cache, while an optional 10Gb Ethernet adapter escalates data transmission bandwidth to meet intensive workload demands.DS1819+ is equipped with one quad-core processor and 4 GB memory 1 (upgradable to 32 GB), delivering sequential throughput at over 2,045 MB/s reading and 656 MB/s writing under aggregated 10Gb Ethernet environment 2. The built-in four Gigabit LAN ports support failover and Link Aggregation. DS1819+ can also be deployed with your existing virtualization environments with its dynamic virtual machine certificates.Btrfs: Next Generation Storage EfficiencyDS1819+ introduces the Btrfs file system , bringing the most advanced storage technologies to meet the management needs of modern businesses:• Advanced snapshot technology with customizable backup schedule allows shared folders to be backed up in a minimum 5-minute interval, without consuming heavy system resources.• File and folder level data restoration brings huge conveniences and saves time for users who wish to restore only a specific file or folder.• Flexible Shared Folder and User Quota System provides comprehensive quota control on all user accounts and shared folders.• File self-healing: Btrfs file system is able to auto-detect corrupted files with mirrored metadata, and recover broken data using the supported RAID volumes, including RAID1, 5, 6, and 10.• Advanced LUN offered by the cutting-edge iSCSI service built for administrators provides lightning-fast snapshot creation, recovery and cloning.Ultimate Backup SolutionDS1819+ integrates various backup applications to safeguard your important data on any device with an intuitive user interface and durable storage technologies.• Desktop backup: Cloud Station Backup safeguards your PC, Mac, and other desktop devices. DS1819+ is also compatible with Time Machine, allowing you to effortlessly backup your Mac to Synology NAS.• NAS backup: Hyper Backup comprehensively backs up your data to a local shared folder, an external device, another Synology NAS, an rsync server, or a public cloud service to ensure data safety.• Server/VMware backup: Active Backup for Business centralizes backup tasks for VMware virtual machines, Windows PC, servers, and rsync/SMB file servers. Fast and reliablerecovery options ensure running services, VMs and files instantly available when needed.• SaaS backup: Active Backup for Office 365/G Suite is an on-premise backup solution for public clouds with a centralized dashboard, optimizing storage efficiency through the single instancing and block-level deduplication technology.Powerful Collaboration SolutionUse the collaboration suite on your Synology NAS to build a private cloud to enhance team cooperation and boost productivity.• Synology Drive allows you to access the data and files on Synology NAS through a unified portal and supports cross-platform synchronization to allow anywhere dataaccess. You can also install the online editor Synology Office and collaborate with others on Document , Spreadsheet , and Slides .• Synology MailPlus allows your business to set up a private and reliable mail server with the support of high-availability design and gives your employees an intuitive web-based client to manage emails and boost productivity.• Synology Calendar enables you to manage team schedules and organize daily tasks effortlessly. Event information can also be synced to your CalDAV clients, allowing you to check schedules anywhere and anytime.• Synology Chat is a web-based application that allows you to start conversationsinstantly and safely and optimizes companies’ internal communications with its powerful information management and interaction features.Effortless Virtualization DeploymentSynology’s Virtual Machine Manager adds boundless capabilities to your NAS. Set up and run various virtual machines including Windows , Linux , and Virtual DSM on your NAS to test new software versions in a sandbox environment, isolate yourcustomers' machines, and increase the flexibility of your DS1819+ with reduced hardware deployment and maintenance costs. Synology iSCSI storage fully supports mostvirtualization solutions to enhance work efficiency with a simple management interface. VMware vSphere™ 6.5 and VAAI integration helps to offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rates, while the support for OpenStack Cinder transformsyour Synology NAS into a block-based storage component.Synology Collaboration SuiteA powerful and secure private cloud solution for business collaboration and organization, offering intuitive andeffective management options.Synology Active Backup SuiteIntegrated, modern, and license-free backup & instant recovery solution for business workloads in physical, virtual, and cloud environmentsVirtual Machine ManagerDS1819+ is designed with virtualization in mind. Virtual Machine Manager enables you to test new software in sandboxes, isolate your customers' machines, and increase the flexibility of your server.• Virtual DSM provides an equally intuitive experience as DiskStation Manager, offering a reliable storage solution with robust features.• Various Operating Systems Supported lets you run Windows, Linux, and Virtual DSM on your Synology NAS in just a few steps.• Snapshots for Virtual Machines is a snapshot technology provided by Virtual Machine Manager, allowing you to perfectly clone and restore a virtual machine within seconds.• Live Migration lets you seamlessly migrate Virtual DSM instances from one Synology NAS to another.• Flexible IT Resource Management enables you to allocate hardware resources such as computing power, storage space, or network interfaces across several virtual machines.• Multi-Tenant Environments allow you to create multiple isolated virtual machines for subsidiary business units or departments.• Synology iSCSI Storage fully supports most virtualization solutions to enhance work efficiency with a simple management interface.Running on Synology DiskStation Manager (DSM)Synology DiskStation Manager (DSM) is a web-based operating system tailor-madefor every Synology NAS. Featuring an intuitive multitasking user interface, DSM provides simple desktop-like experience to minimize the efforts in exploring and managing your Synology NAS.The built-in Package Center allows you to download and install a variety of packages designed specifically for your unique needs, including file backup, virtualization, productivity, safeguard security and utilities.With all the built-in and add-on features, DSM provides you with complete andfine-grained control of your DS1819+, maximizing your productivity and make the best out of your digital assets. All can be done with just a few clicks.Virtual Machine ManagerVirtual Machine Manager implements various virtualization solutions, allowing you to manage multiple virtual machines on your DS1819+, including Windows, Linux, and Virtual DSM.Technical SpecificationsHardwareCPUIntel Atom C3538 quad-core 2.1GHz Hardware encryption engine Yes (AES-NI)Memory4 GB DDR4 Non-ECC SO-DIMM 1 (expandable up to 32 GB wtih 16 GB ECC SO-DIMM x 2)Compatible drive type • 8 x 3.5” or 2.5” SATA HDD/SSD (drives not included)• 2 x M.2 2280/2260/2242 NVMe/SATA SSD 3 (drives not included)Hot swappable drive YesExternal port • 4 x USB 3.0 port • 2 x eSATA port Size (HxWxD)166 x 343 x 243 mm Weight 6 kgLAN4 x Gigabit (RJ-45)Wake on LAN/WAN YesPCIe 3.0 slot• 1 x 4-lane x8 slot• 10GbE network interface card support• M.2 NVMe/SATA SSD adapter card support 3Scheduled power on/off YesSystem fan2 (120 x 120 x 25 mm)AC input power voltage 100V to 240V AC Power frequency 50/60Hz, single phase Operating temperature 0°C to 40°C (32°F to 104°F)Storage temperature -20°C to 60°C (-5°F to 140°F)Relative humidity5% to 95% RH Maximum operating altitude3,048 m (10,000 ft)General DSM SpecificationNetworking protocol SMB, AFP , NFS, FTP , WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP , VPN (PPTP , OpenVPN ™, L2TP)File system• Internal: Btrfs, ext4• External: Btrfs, ext4, ext3, FAT, NTFS, HFS+, exFAT 5Supported RAID type Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10Storage management• Maximum single volume size: 108TB • Maximum of system snapshots: 65,5366• Maximum internal volumes: 512Hardware Overview1Status indicator 2Alert indicator 3Power button 4LAN indicator 5Drive status indicator 6Drive tray 7USB 3.0 port 8Power port 9eSATA port 101GbE RJ-45 port 11Reset button12USB 3.0 port13Fan14PCIe expansion slotSSD cache • Read-write cache support• M.2 SSD support (M.2 NVMe/SATA SSD)3File sharing capability • Maximum local user accounts: 2,048• Maximum local groups: 256• Maximum shared folders: 512• Maximum concurrent SMB/NFS/AFP/FTP connections: 1,000Privilege Windows Access Control List (ACL), application privilegesDirectory service Windows® AD integration: Domain users login via SMB/NFS/AFP/FTP/File Station, LDAP integration Virtualization VMware vSphere® 6.5, Microsoft Hyper-V®, Citrix®, OpenStack®Security Firewall, encryption shared folder, SMB encryption, FTP over SSL/TLS, SFTP, rsync over SSH, login autoblock, Let's Encrypt support, HTTPS (customizable cipher suite)Supported client Windows 7 and 10, Mac OS X 10.11 onwardsSupported browser Chrome®, Firefox®, Internet Explorer® 10 onwards, Safari® 10 onwards; Safari (iOS 10 onwards), Chrome (Android™ 6.0 onwards)Interface language English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svensk, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český,ภาษาไทย,Drive Provide a universal portal to synchronize your files across various platforms, including Windows, macOS, Linux, Android, and iOS. The built-in universal portal allows you to access data anytime and anywhere.• Maximum Number of Hosted Files: 1,000,000• Maximum Number of Concurrent Connections for PC Clients: 550File Station Virtual drives, remote folders, Windows ACL editor, compressing/extracting archived files, bandwidth control for specific users/groups, creating sharing links, transfer logsFTP Server Bandwidth control for TCP connections, custom FTP passive port range, anonymous FTP, FTP SSL/TLS and SFTP protocol, boot over the network with TFTP and PXE support, transfer logsPresto File Server High-speed data transfer over WAN with exclusive SITA technology between Synology NAS and desktop7Cloud Sync One or two-way synchronization with public cloud storage providers including Alibaba Cloud OSS, Amazon Drive, Amazon S3-compatible storage, Backblaze B2, Baidu Cloud, Box, Dropbox, Google Cloud Storage, Google Drive, hubiC, MegaDisk, Microsoft OneDrive, OpenStack Swift-compatible storage, Tencent COS, WebDAV servers, Yandex DiskiSCSI Manager • Maximum iSCSI target: 128• Maximum iSCSI LUN: 256• iSCSI LUN clone/snapshot supportBackup tools DSM configuration backup, macOS Time Machine support, Cloud Station Backup Shared folder sync - maximum task number: 16Snapshot Replication • Maximum of shared folder snapshots: 1,024• Maximum of Replication: 32High Availability Manager Reduce service downtime by setting up two identical NAS into one high-availability cluster Active Backup for G Suite Support G Suite My Drive and Team Drive backup and restorationActive Backup for Office 365Support Office 365 OneDrive for Business, mail, contacts, and calendar backup and restorationActive Backup for Business All-in-one backup solution designed for heterogeneous business IT environment, enabling IT admins to remotely manage and monitor protection over PC, servers and VM on one centralized consoleProductivity & CollaborationCollaboration tools Collaborate with instant message service Chat, online editor Office, and scheduling assistant Calendar • Chat maximum user: 1,500• Office maximum user: 1,800• Calendar: support CalDAV and access via mobile devicesNote Station Rich-text note organization and versioning, encryption, sharing, media embedding and attachmentsMailPlus Server Secure, reliable, and private mail solution with high-availability, load balancing, security and filtering design (includes 5 free email account licenses; additional accounts require the purchasing of additional licenses)Other packages Video Station, Photo Station, Audio Station, iTunes® ServerSurveillance StationMaximum IP camera: 40 (total of 1200 FPS at 720p, H.264) (including two free camera licenses; additional cameras require the purchasing of Synology Directory Server Provide a flexible and cost-effective domain controller solutionCMS Provide a single interface to manage and monitor multiple Synology NAS VPN Server Maximum connection: 30, supported VPN protocol: PPTP , OpenVPN™, L2TP/IPSec Mail Server Supported Mail Server protocol: POP3, SMTP , IMAP , support LDAP/AD accountMail Station Webmail interface for Mail Server to receive emails from multiple POP3 mailboxes, customizable SMTP server Web Station Virtual host (up to 30 websites), PHP/MariaDB®, 3rd-party applications support Storage Analyzer modified files, least recently accessed filesAntivirus Essential Full system scan, scheduled scan, white list customization, virus definition auto updateiOS/Android™ applications Synology Drive, DS audio, DS photo, DS video, DS cam, DS cloud, DS file, DS finder, DS note, Moments, MailPlus Other packagesAdditional 3rd-party packages available on Package CenterEnvironment and PackagingEnvironment safetyRoHS compliant Package content• DS1819+ main unit x 1• Quick Installation Guide x 1• AC power cord x 1• Accessory pack x 1• RJ-45 LAN cable x 2Optional accessories• 4GB DDR4-2133 Non-ECC SO-DIMM (D4NS2133-4G)• 16GB DDR4-2133 ECC SO-DIMM (RAMEC2133DDR4SO-16G)• Synology E10G18-T1 / E10G18-T2 / E10G15-F1 / E10G17-F2 10Gbps Ethernet adapters • Synology M2D18 M.2 SSD adatper card • Synology Expansion Unit DX517• VisualStation VS360HD, VS960HD • Surveillance Device License Pack • MailPlus License Pack •Virtual DSM License PackWarranty 3 years 8*Model specifications are subject to change without notice. Please refer to for the latest information.1. DS1819+ comes with 4GB DDR4 Non-ECC SO-DIMM and can support up to 32GB with optional ECC SO-DIMM.2. Performance figures may vary depending on environment, usage, and configuration. Visit https:///zh-tw/products/performance for more information.3. DS1819+ supports dual M.2 SSDs through M2D18 adapter card, sold separately.4. DS1819+ supports two Synology DX517, sold separately.5. exFAT Access is purchased separately in Package Center.6. System snapshot includes snapshots taken by iSCSI Manager, Snapshot Replication, and Virtual Machine Manager. Availability of these packages varies by model.7. Presto File Server License is purchased separately in Package Center.8.5 year warranty is available as an optional bundle with EW201, 2-year Extended Warranty service add-on. Visit https:///en-global/products/Extended_Warranty for more information on availability. The warranty period starts from the purchase date as stated on your purchase receipt. Visit https:///company/legal/warranty for more information.Headqu artersSynology Inc. 9F., No.1, Yuandong Rd., Banqiao Dist., New Taipei City 220, Taiwan Tel: +886 2 2955 1814 Fax: +886 2 2955 1884ChinaSynology Shanghai200070, Room 201, No. 511, Tianmu W. Rd., Jingan Dist. Shanghai, China FranceSynology France SARL102 Terrasse Boieldieu (TOUR W)92800 Puteaux, FranceTel: +33 147 176288North & South AmericaSynology America Corp.3535 Factoria Blvd SE,Suite #200, Bellevue, WA 98006, USATel: +1 425 818 1587United KingdomSynology UK Ltd.Unit 5 Danbury Court, Linford Wood, Milton Keynes, MK14 6PL, United Kingdom GermanySynology GmbHGrafenberger Allee 125 40237 DüsseldorfDeutschlandTel: +49 211 9666 9666JapanSynology Japan Co., Ltd4F, 3-1-2, Higashikanda, Chiyoda-ku,Tokyo, 101-0031, JapanSYNOLOGY INC.Synology creates network-attached storage, IP surveillance solutions, and network equipment that transform the way users manage data, conduct surveillance, and manage networks in the cloud era. By taking full advantage of the latest technologies, Synology aims to help users centralize data storage and backup, share files on-the-go, implement professional surveillance solutions, and manage networks in reliable and affordable ways. Synology is committed to delivering products with forward-thinking features and the best in class customer services.Copyright © 2019, Synology Inc. All rights reserved. Synology, the Synology logo are trademarks or registered trademarks of Synology Inc. Other product and company names mentioned herein may be trademarks of their respective companies. Synology may make changes to specification and product descriptions at anytime, without notice.DS1819+-2019-ENU-REV003。

一、leaksanitizer概述leaksanitizer是一种用于检测内存泄漏的工具，它在编译时插入一些额外的代码来跟踪内存的分配和释放情况，从而在程序运行时实时监测内存的使用情况。

它可以帮助我们发现那些被遗忘的内存块，从而减少程序的内存消耗，提高程序的性能和稳定性。

二、leaksanitizer的使用1. 编译选项在使用leaksanitizer时，我们需要在编译程序时添加一些选项来启用leaksanitizer的功能。

具体来说，我们可以使用以下命令来编译我们的程序：```bashclang -fsanitize=leak -fno-omit-frame-pointer -g -O2 program.c ```其中，-fsanitize=leak表示启用leaksanitizer，-fno-omit-frame-pointer表示不省略函数调用的堆栈信息，-g表示生成调试信息，-O2表示启用优化。

这些选项可以根据实际情况进行调整。

2. 运行程序编译完成后，我们可以直接运行生成的可执行文件。

在程序运行过程中，leaksanitizer会监测内存的分配和释放情况，并在发现内存泄漏时给出相应的警告。

3. 分析结果当程序运行结束后，leaksanitizer会输出一些信息来描述内存泄漏的情况，包括泄漏的内存块的位置区域、大小、分配和释放的堆栈信息等，以帮助我们更好地定位和修复问题。

三、leaksanitizer的优势1. 实时监测：leaksanitizer能够在程序运行时实时监测内存的使用情况，及时发现内存泄漏问题。

2. 精准定位：leaksanitizer能够提供详细的内存泄漏信息，包括泄漏的内存块的位置区域、大小和分配释放的堆栈信息，帮助我们精准地定位问题。

3. 提高程序性能：通过定位和修复内存泄漏问题，leaksanitizer可以减少程序的内存消耗，提高程序的性能和稳定性。

四、leaksanitizer的局限性尽管leaksanitizer具有很多优势，但也存在一些局限性，例如：1. 性能消耗：leaksanitizer在监测程序内存的同时会带来一定的性能消耗，特别是在内存使用量较大的情况下，可能会显著影响程序的性能。