DZone
Thanks for visiting DZone today,
Edit Profile
  • Manage Email Subscriptions
  • How to Post to DZone
  • Article Submission Guidelines
Sign Out View Profile
  • Post an Article
  • Manage My Drafts
Over 2 million developers have joined DZone.
Log In / Join
Refcards Trend Reports
Events Video Library
Refcards
Trend Reports

Events

View Events Video Library

Zones

Culture and Methodologies Agile Career Development Methodologies Team Management
Data Engineering AI/ML Big Data Data Databases IoT
Software Design and Architecture Cloud Architecture Containers Integration Microservices Performance Security
Coding Frameworks Java JavaScript Languages Tools
Testing, Deployment, and Maintenance Deployment DevOps and CI/CD Maintenance Monitoring and Observability Testing, Tools, and Frameworks
Culture and Methodologies
Agile Career Development Methodologies Team Management
Data Engineering
AI/ML Big Data Data Databases IoT
Software Design and Architecture
Cloud Architecture Containers Integration Microservices Performance Security
Coding
Frameworks Java JavaScript Languages Tools
Testing, Deployment, and Maintenance
Deployment DevOps and CI/CD Maintenance Monitoring and Observability Testing, Tools, and Frameworks

Last call! Secure your stack and shape the future! Help dev teams across the globe navigate their software supply chain security challenges.

Modernize your data layer. Learn how to design cloud-native database architectures to meet the evolving demands of AI and GenAI workloads.

Releasing software shouldn't be stressful or risky. Learn how to leverage progressive delivery techniques to ensure safer deployments.

Avoid machine learning mistakes and boost model performance! Discover key ML patterns, anti-patterns, data strategies, and more.

Related

  • The Curious Case of Dead-End-Lock(Deadlock) | MySql
  • Deadlock-Free Synchronization in Java
  • Unmasking Entity-Based Data Masking: Best Practices 2025
  • How Trustworthy Is Big Data?

Trending

  • Blue Skies Ahead: An AI Case Study on LLM Use for a Graph Theory Related Application
  • How Clojure Shapes Teams and Products
  • Java's Quiet Revolution: Thriving in the Serverless Kubernetes Era
  • Scalability 101: How to Build, Measure, and Improve It
  1. DZone
  2. Data Engineering
  3. Databases
  4. Deadlock in Databases

Deadlock in Databases

Here's why you need to avoid database deadlock.

By 
Anghel Leonard user avatar
Anghel Leonard
DZone Core CORE ·
May. 28, 19 · Presentation
Likes (3)
Comment
Save
Tweet
Share
8.1K Views

Join the DZone community and get the full member experience.

Join For Free

From databases perspective, a deadlock is a phenomenon that occurs when two transactions are blocking each other.

Image title

In the figure above, we have a classic deadlock situation. Transaction A (old man transaction) holds a lock to resource A (Dogs), but it doesn't release it until it will acquire a lock to resource B (Cats) that is currently locked by transaction B (young man transaction). In the same time, transaction B (young man transaction) holds a lock to resource B (Cats), but it doesn't release it until it will acquire a lock to resource A (Dogs) that is currently locked by transaction A (old man transaction).

The application (data access layer) is responsible for managing the acquisition of the lock/release in order to avoid deadlocks, and implicitly performance issues. Without application support, you need to rely on the database capability of detecting and solving deadlocks (commonly, by aborting one of the transactions involved in a deadlock).

You may also like Java Persistence Performance Illustrated Guide.

Database Threading

Opinions expressed by DZone contributors are their own.

Related

  • The Curious Case of Dead-End-Lock(Deadlock) | MySql
  • Deadlock-Free Synchronization in Java
  • Unmasking Entity-Based Data Masking: Best Practices 2025
  • How Trustworthy Is Big Data?

Partner Resources

×

Comments

The likes didn't load as expected. Please refresh the page and try again.

ABOUT US

  • About DZone
  • Support and feedback
  • Community research
  • Sitemap

ADVERTISE

  • Advertise with DZone

CONTRIBUTE ON DZONE

  • Article Submission Guidelines
  • Become a Contributor
  • Core Program
  • Visit the Writers' Zone

LEGAL

  • Terms of Service
  • Privacy Policy

CONTACT US

  • 3343 Perimeter Hill Drive
  • Suite 100
  • Nashville, TN 37211
  • support@dzone.com

Let's be friends: