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"GC (Allocation Failure): Messages On Java Virtual Machine Garbage Collector Log Files IN Siebel Application Containers for AI, SES and CGW (Doc ID 2777189.1)

Last updated on OCTOBER 27, 2022

Applies to:

Siebel CRM - Version 17.0 [IP2017] and later
Information in this document applies to any platform.

Symptoms


After enable Java Garbage Collector (GC) logging for Siebel Application Interface, Siebel Gateway and Siebel Server application containers (Apache/Tomcat) the following messages has been observed in the GC log files:

2021-05-03T21:22:07.001+0200: 334.511: [GC (Allocation Failure) [PSYoungGen: 2097664K->15106K(2446848K)] 2130263K->47714K(8039424K), 0.0161895 secs] [Times: user=0.01 sys=0.00, real=0.02 secs]
2021-05-03T21:25:58.708+0200: 566.221: [GC (Allocation Failure) [PSYoungGen: 2112770K->14330K(2446848K)] 2145378K->46946K(8039424K), 0.0088006 secs] [Times: user=0.09 sys=0.00, real=0.02 secs]
2021-05-03T21:29:49.417+0200: 796.924: [GC (Allocation Failure) [PSYoungGen: 2111994K->16752K(2446848K)] 2144610K->49395K(8039424K), 0.0099741 secs] [Times: user=0.02 sys=0.02, real=0.02 secs]
2021-05-03T21:35:00.113+0200: 1107.618: [GC (Allocation Failure) [PSYoungGen: 2114416K->21626K(2689024K)] 2147059K->54277K(8281600K), 0.0156264 secs] [Times: user=0.06 sys=0.03, real=0.02 secs]

This is been observed on all Siebel environments Development/Test/Production. There has been no side effects observed but Administrator wants to verify relevance of such messages above.

The issue can be reproduced at will with the following steps:

  1. Configure the Application Container Apache/Tomcat to enable GC log files.

  2. Run from command line <Siebel Root Folder>\applicationcontainer\bin\Tomcat9w.exe //ES//<Siebel Application Container Windows Service Name>" to bring the Tomcat monitor application.

  3. Go to Java tab

  4. On Java Options session add the following options:
    -XX:+PrintGCDetails
    -XX:+PrintGCTimeStamps
    -XX:+PrintGCDateStamps
    -Xloggc:C:\GCLogs\gc.log

    Here is an example for Siebel Enterprise Server Application Container Apache/Tomcat:


  5. Restart the Application Container for your Siebel resource (Gateway/AI/Server)

  6. Open the file C:\GCLogs\gc.log generate and you can observed similar message as above.

 

Changes

 Enable Apache/Tomcat JVM Garbage Collector logging on Siebel Application Containers.

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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