Troubleshooting OutOfMemoryError - Heap dump, Eclipse MAT

Learn how to troubleshoot OutOfMemoryError using the Eclipse MAT tool. You will learn best practices, cool tips & tricks to debug memory problems effectively.

If you liked this video, you'll love our Java Performance Masterclass. Learn more:
https://ycrash.io/java-performance-training

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Topics covered in the video:

0:22 - Memory leak Demo code from Opensource BuggyApp
3:33 - Object Hierarchy
4:45 - Application suffered from OutOfMemoryError
5:00 - How we can diagnose OutOfMemoryError
6:00 - How you can capture heap dumps?
9:25 - Eclipse MAT Titbits
15:36 - What is Shallow heap and Retained heap?
24:28 - Elements sitting with MapManager
27:34 - Who is creating MapManager?

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Links shared in the video:

Buggy App:
https://buggyapp.ycrash.io

HOW TO CAPTURE JAVA HEAP DUMPS? – 7 OPTIONS:
https://blog.heaphero.io/2017/10/13/how-to-capture-java-heap-dumps-7-options/

Eclipse MAT – Titbits:
https://blog.ycrash.io/2021/03/08/eclipse-mat-tidbits/

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Our Tools:

yCrash: https://yCrash.io/
GCeasy: https://gceasy.io/
fastThread: https://fastthread.io/
HeapHero: https://heaphero.io/

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SRE Community:

Need help in troubleshooting your performance problems?
Post here: https://answers.ycrash.io/

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Follow us on:

LinkedIn: https://www.linkedin.com/company/ycrash
Instagram: https://www.instagram.com/ycrash_rca/
Facebook: https://www.facebook.com/tier1app
Twitter: https://twitter.com/tier1app

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Related videos:

Shallow Heap vs Retained Heap:
https://youtu.be/Ns4Du2Qh91Y

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