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· 8 hr 前 1m read

Prevent specific table data from being rolled back

InterSystems FAQ rubric

There is data, such as execution log data, that you do not want to return to its previous state even if a rollback occurs during a transaction. The above requirement can be met by placing that data in the IRISTEMP database, which will not be rolled back.

Temporary Globals and the IRISTEMP Database

By mapping the table entities you do not want to roll back to this database, you can retain the information after the rollback.

However, the contents of this database will be cleared when IRIS is restarted, so if you want to keep it permanently, you will need to copy it to a permanent table at some point (after a rollback, etc.).

Alternatively, you can make a table operation non-transactional by stopping journaling for the process before the operation and then restarting journaling after the operation is complete.

However, this method cannot be used when using mirroring.

Managing journaling at the process level with %NOJRN

Developer Community Article

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質問
· 8 hr 前

Using a Linked Table (SQL) as a Filter in a Business Rule

I had a need for a Filter, but did not want to recreate the wheel by creating another Data Lookup Table, so instead I created a Linked Table that points to a MS SQL Table outside of IRIS.

Once I had the Linked Table, I created a Class Method Function that would query the Linked Table and return a 1 if a result came back.

ClassMethod CheckPDMProviderType(pInput As %String) As %Boolean
{
    set ExtDisplay = ""
 		&sql(SELECT SecurityGroup_k INTO :ExtDisplay
        FROM osuwmc_CPD_SQL.Ref_SecurityGroup WHERE PDMExtDisplay = 1 AND SecurityGroup_k = :pInput)
    if ExtDisplay = "" {
        quit 0
    }
    quit 1
}

However, it doesn't seem like the Results of the Class Method are coming back correctly 100% of the time.

Is there an easier way to use the Linked Table to filter within a Business Rule? Are we able to project Linked Tables to Data Lookup Tables?

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質問
· 9 hr 前

Turbo Repair: Keeping Your Engine Running Smoothly

 

Turbo Repair: Keeping Your Engine Running Smoothly

Modern vehicles are designed with advanced technologies that balance power, fuel efficiency, and reduced emissions. Among these innovations, the turbocharger stands out as one of the most impactful. By using exhaust gases to compress more air into the engine, turbos help even smaller engines deliver strong performance without consuming excessive fuel. However, just like any other component, turbos are not immune to wear and tear. When problems occur, turbo repair becomes essential to keep the vehicle running at its best.

 


How a Turbo Works

A turbocharger consists of two main sections: the turbine and the compressor. Exhaust gases from the engine spin the turbine wheel, which is connected by a shaft to the compressor wheel. The compressor then forces additional air into the combustion chamber, allowing the engine to burn fuel more efficiently.

This process increases engine power and performance without significantly increasing fuel consumption. A turbo-equipped car can deliver up to 30–40% more power output compared to a naturally aspirated engine of the same size.

 


Why Turbochargers Fail

While turbos are durable, their operating conditions are extreme. They can rotate at speeds exceeding 200,000 revolutions per minute and endure temperatures over 800°C (1,470°F). Over time, these conditions can cause damage. Some of the most common causes of turbo failure include:

  • Lack of lubrication – Insufficient or poor-quality oil prevents proper cooling and lubrication, leading to rapid wear.
  • Contaminated oil – Dirt or particles in the oil can scratch or damage bearings.
  • Foreign objects – Small debris entering the intake system can strike the compressor blades.
  • Excessive heat – Continuous high-temperature operation without adequate cooling may warp or crack parts.
  • Normal wear and aging – Like all components, turbos eventually degrade after prolonged use.

 


Warning Signs of Turbo Trouble

Drivers should be aware of the symptoms that indicate a failing turbo. Acting early can often save money and prevent further engine damage.

  1. Loss of power – A drop in acceleration or overall performance may suggest reduced boost pressure.
  2. Unusual smoke – Blue smoke can mean oil leaks, while black smoke signals poor fuel-air mixture.
  3. Whining or whistling sounds – A distinct noise from the turbo usually points to air leaks or worn bearings.
  4. Excessive oil consumption – A common indicator of failing seals.
  5. Check engine warning – Modern vehicles often monitor turbo performance and can trigger dashboard alerts.

 


The Importance of Turbo Repair

Turbo repair restores the component to working condition, allowing the vehicle to regain lost efficiency and performance. Unlike a simple part replacement, repair involves a detailed inspection of all components, cleaning, replacing worn seals or bearings, and balancing the unit to ensure safe operation.

For many vehicle owners, repair is more cost-effective than replacing the entire turbocharger. However, the decision depends on the level of damage and the type of vehicle.

 


Professional Expertise Matters

Turbochargers are precision-engineered components that require specialized tools and knowledge for repair. Attempting to fix them without expertise often leads to further problems. Professional specialists can identify the root cause of failure, repair or replace the necessary parts, and ensure the turbo is balanced and tested before being returned to service.

For this reason, it is always recommended to find a specialist near you when dealing with turbo issues. Proper repair not only restores performance but also ensures long-term reliability.

 


How to Prevent Turbo Damage

While turbo repair may become necessary eventually, drivers can take steps to prolong the life of their turbocharger:

  • Regular oil changes – Using the right grade of oil and replacing it at scheduled intervals is the most important factor in preventing premature wear.
  • Warm-up periods – Allowing the engine to reach operating temperature before heavy acceleration helps avoid thermal stress.
  • Cool-down periods – Idling for a short time after long drives helps prevent sudden heat-related damage.
  • Clean air filter – Prevents dust and debris from entering the turbo.
  • Routine inspections – Keeping an eye on boost pressure, exhaust smoke, and unusual noises can help catch problems early.

These habits can significantly extend the turbo’s lifespan and delay the need for repair.

 


The Future of Turbo Technology

Automotive manufacturers are constantly refining turbocharger technology. Modern developments include:

  • Twin-scroll turbos – Improve efficiency by separating exhaust pulses, reducing lag.
  • Variable geometry turbos (VGTs) – Adjust the angle of the turbine blades to optimize performance across different speeds.
  • Electric turbos – Powered by electric motors, these reduce lag and improve response times.

With these advancements, turbo repair has also become more specialized, requiring technicians to stay updated with new designs and diagnostic tools.

 


Why Turbo Repair Shouldn’t Be Delayed

Ignoring a faulty turbo can lead to much more serious engine issues. A damaged turbo may allow oil to leak into the exhaust system, clog catalytic converters, or even cause internal engine damage. Early intervention not only saves money but also ensures the vehicle remains safe to drive.

 


Conclusion

Turbochargers are a vital part of modern engines, providing both efficiency and performance. But because they operate under intense stress, issues are inevitable over time. By understanding the causes of failure, recognizing warning signs, and seeking timely turbo repair, drivers can maintain their vehicle’s reliability and power. With proper care and professional expertise, a turbocharger can continue to deliver benefits for many years.

Turbo Repair: Keeping Your Engine Running Smoothly

Modern vehicles are designed with advanced technologies that balance power, fuel efficiency, and reduced emissions. Among these innovations, the turbocharger stands out as one of the most impactful. By using exhaust gases to compress more air into the engine, turbos help even smaller engines deliver strong performance without consuming excessive fuel. However, just like any other component, turbos are not immune to wear and tear. When problems occur, turbo repair becomes essential to keep the vehicle running at its best.

 


How a Turbo Works

A turbocharger consists of two main sections: the turbine and the compressor. Exhaust gases from the engine spin the turbine wheel, which is connected by a shaft to the compressor wheel. The compressor then forces additional air into the combustion chamber, allowing the engine to burn fuel more efficiently.

This process increases engine power and performance without significantly increasing fuel consumption. A turbo-equipped car can deliver up to 30–40% more power output compared to a naturally aspirated engine of the same size.

 


Why Turbochargers Fail

While turbos are durable, their operating conditions are extreme. They can rotate at speeds exceeding 200,000 revolutions per minute and endure temperatures over 800°C (1,470°F). Over time, these conditions can cause damage. Some of the most common causes of turbo failure include:

  • Lack of lubrication – Insufficient or poor-quality oil prevents proper cooling and lubrication, leading to rapid wear.
  • Contaminated oil – Dirt or particles in the oil can scratch or damage bearings.
  • Foreign objects – Small debris entering the intake system can strike the compressor blades.
  • Excessive heat – Continuous high-temperature operation without adequate cooling may warp or crack parts.
  • Normal wear and aging – Like all components, turbos eventually degrade after prolonged use.

 


Warning Signs of Turbo Trouble

Drivers should be aware of the symptoms that indicate a failing turbo. Acting early can often save money and prevent further engine damage.

  1. Loss of power – A drop in acceleration or overall performance may suggest reduced boost pressure.
  2. Unusual smoke – Blue smoke can mean oil leaks, while black smoke signals poor fuel-air mixture.
  3. Whining or whistling sounds – A distinct noise from the turbo usually points to air leaks or worn bearings.
  4. Excessive oil consumption – A common indicator of failing seals.
  5. Check engine warning – Modern vehicles often monitor turbo performance and can trigger dashboard alerts.

 


The Importance of Turbo Repair

Turbo repair restores the component to working condition, allowing the vehicle to regain lost efficiency and performance. Unlike a simple part replacement, repair involves a detailed inspection of all components, cleaning, replacing worn seals or bearings, and balancing the unit to ensure safe operation.

For many vehicle owners, repair is more cost-effective than replacing the entire turbocharger. However, the decision depends on the level of damage and the type of vehicle.

 


Professional Expertise Matters

Turbochargers are precision-engineered components that require specialized tools and knowledge for repair. Attempting to fix them without expertise often leads to further problems. Professional specialists can identify the root cause of failure, repair or replace the necessary parts, and ensure the turbo is balanced and tested before being returned to service.

For this reason, it is always recommended to find a specialist near you when dealing with turbo issues. Proper repair not only restores performance but also ensures long-term reliability.

 


How to Prevent Turbo Damage

While turbo repair may become necessary eventually, drivers can take steps to prolong the life of their turbocharger:

  • Regular oil changes – Using the right grade of oil and replacing it at scheduled intervals is the most important factor in preventing premature wear.
  • Warm-up periods – Allowing the engine to reach operating temperature before heavy acceleration helps avoid thermal stress.
  • Cool-down periods – Idling for a short time after long drives helps prevent sudden heat-related damage.
  • Clean air filter – Prevents dust and debris from entering the turbo.
  • Routine inspections – Keeping an eye on boost pressure, exhaust smoke, and unusual noises can help catch problems early.

These habits can significantly extend the turbo’s lifespan and delay the need for repair.

 


The Future of Turbo Technology

Automotive manufacturers are constantly refining turbocharger technology. Modern developments include:

  • Twin-scroll turbos – Improve efficiency by separating exhaust pulses, reducing lag.
  • Variable geometry turbos (VGTs) – Adjust the angle of the turbine blades to optimize performance across different speeds.
  • Electric turbos – Powered by electric motors, these reduce lag and improve response times.

With these advancements, turbo repair has also become more specialized, requiring technicians to stay updated with new designs and diagnostic tools.

 


Why Turbo Repair Shouldn’t Be Delayed

Ignoring a faulty turbo can lead to much more serious engine issues. A damaged turbo may allow oil to leak into the exhaust system, clog catalytic converters, or even cause internal engine damage. Early intervention not only saves money but also ensures the vehicle remains safe to drive.

 


Conclusion

Turbochargers are a vital part of modern engines, providing both efficiency and performance. But because they operate under intense stress, issues are inevitable over time. By understanding the causes of failure, recognizing warning signs, and seeking timely turbo repair, drivers can maintain their vehicle’s reliability and power. With proper care and professional expertise, a turbocharger can continue to deliver benefits for many years.

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記事
· 10 hr 前 1m read

5Unlock Business Success with Business Setup Services UAE

Starting a company in the UAE can be highly rewarding, but the legal processes and documentation often become overwhelming for new entrepreneurs. Business setup services UAE help simplify these challenges by managing approvals, licenses, and compliance requirements. With expert guidance, you can focus on growing your venture while professionals handle the technicalities, ensuring a smooth and efficient start.

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記事
· 13 hr 前 12m read

Traçage des applications InterSystems IRIS à l'aide de Jaeger

Nous présentons ici le processus d'utilisation de la célèbre solution Jaeger pour tracer les applications InterSystems IRIS. Jaeger est un produit open source permettant de suivre et d'identifier des problèmes, en particulier dans les environnements distribués et de microservices. Ce backend de traçage, apparu chez Uber en 2015, a été inspiré par Dapper de Google et OpenZipkin de Twitter. Il a ensuite rejoint la Fondation Cloud Native Computing (CNCF) en tant que projet en incubation en 2017, avant d'obtenir le statut gradué en 2019.

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