Weblogic Server 12.1.1 Becomes Unresponsive with High CPU When a Huge HTTP GET Request is Sent Over SSL
Last updated on DECEMBER 11, 2017
Applies to:Oracle WebLogic Server - Version 22.214.171.124 to 126.96.36.199 [Release 12c]
Information in this document applies to any platform.
In WebLogic Server 12.1.1, when we are trying to send a very large data packet (2-4 times the "max. message size") over HTTP GET, using a SSL client, we can observe persistent high CPU, leading to system instability and service unavailability. On checking the top output and then validating the same with thread dump we can observe the following thread being the culprit:
We could observe this behavior with other muxer at the same time.
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