OAG Crashed When Request To Downstream Application Is Slow Causing Too Many Open Files Error (Doc ID 2003661.1)

Last updated on MAY 06, 2016

Applies to:

Oracle API Gateway - Version 11.1.2 and later
Information in this document applies to any platform.

Symptoms

PROBLEM DESCRIPTION
---------------------------------------
When downstream application response is slow, OAG crashed instead of refusing more request.

ERROR
------------
too many open files

WHAT IS WORKING
--------------------------------
When the downstream application took long time to respond(more 30 seconds), OAG continue to accept new request and crashed with too many open files error.

Current ulimit was set to 2048 with 12 GB memory


ENVIRONMENT
------------
OAG 11.1.2.3
OS: Linux Red Hat Enterprise 6

STEPS
-----------
1. Make a request from OAG
2. The application responds but takes more than 30 seconds
3. OAG continue to accept new request then crashes.
4. too many open files error is seen

BUSINESS IMPACT
-----------------------------

This issue is preventing the OAG from servicing application that takes longer time to respond.

Cause

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