Stuck in Infinite Loop at Chunk.tail() with High CPU Consumption
Last updated on JULY 20, 2017
Applies to:Oracle WebLogic Server - Version 220.127.116.11.0 to 18.104.22.168.0 [Release 12c]
Oracle Service Bus - Version 22.214.171.124.0 to 126.96.36.199.0
Information in this document applies to any platform.
Under high load, Weblogic is stuck in an infinite loop at Chunk.tail() with High CPU Consumption with the following stack trace:
This rare issue happens satisfying all the following conditions:
- AsyncResponseHandler is used to receive outbound HTTP response asynchronously from a remote HTTP server.
- -Dhttp.keepAlive=false is set for outbound HTTP request and response.
- High load condition (e.g. 50+ WLS execute threads running simultaneously)
- Enough WLS execute threads in a thread pool (e.g. increasing self-tuning-thread-pool-size-min)
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