A failure needs to be narrowed down before settings are changed or operations retried. Which evidence best separates application errors from environment and dependency problems?

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Tasadduq BurneyownerOwner · Founder

26525 reputation · 19 Feb 2025, 19:48 UTC

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Capture the exception chain, relevant request context and JVM process state. Check thread dumps for blocked work and logs for garbage collection or memory failures. An OutOfMemoryError can involve heap, direct buffers or native resources, so increasing only the heap may not address it.

What should I check first when Java fails?

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