PQ68542: ADMIN SERVER RESTARTS APP SERVER BUT THERE IS NEITHER A CRASH ORA PING TIMEOUT.

 Fixes are available

4.0.6: WebSphere Application Server Version 4.0 Fix Pack 6
System Management Component Cumulative Fix for 4.0.2/4.0.3/4.0.4 /4.0.5



APAR status
Closed as program error.

Error description
The Admin Server restarts the Application Server in a Windows
environment.  The tracefile reveals the following messages:

ActiveServerP A ADMS0028I: Restarting server: ServerName
ActiveServerP A ADMS0032I: Started server: ServerName (pid 2584)

This is usually evidence that a process running under the JVM
has crashed. Windows did not produce a DrWatson or user dump.
Running an Admin Server trace reveals very litte as to why the
Admin Server restarts the Application Server in this manner.

For this case, it was determined that when the Admin Server
restarted the JVM it did not attempt to shut down the
Application Server JVM as it does when it receives a no ping
received message.  Instead it was determined that the Admin
Service restarted the Application Server JVM due to Windows
communicating to the AdminService that the JVM process has been
terminated.  There was some evidance that the JVM's resources
were not totally released but this would require more
investigation to be conclusive.  If this is necessary then the
WL3SM team would need to provide a diagonostic module to further
investigate the Windows' issues.

This APAR should provide a log message indicating why the Admin
Server is restarting the Application Server.

At this time the e-fix for this APAR has been put into the
System Management cumulative efix which is:
WAS_SysMgmt_01_07_2003_4.02_4.03_4.04_AE_cumulative_Windows_eFix
Local fix Problem summary
****************************************************************
* USERS AFFECTED: WebSphere Application Server users.          *
****************************************************************
* PROBLEM DESCRIPTION: User sees application server being      *
*                      restarted by admin server without       *
*                      any explanation.                        *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
The admin server will restart an application server if:

  1)  The application server fails to send a "ping" to
  the admin server.  In this case, the admin server will
  try to gracefully shutdown the application server
  before restarting it.  There will be log entries in
  this scenario.

  2)  The application server process terminates
  unexpectedly. This is what was occurring in this
  scenario.
Problem conclusion
Code to produce log entries was added to report that the
application server has terminated and the exit code from
the application server is also reported.
Temporary fix
Test fix sent to Harry Rumley.
Comments
APAR information
APAR number PQ68542
Reported component name WEBSPHERE AE NT
Reported component ID 5630A2201
Reported release 400
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Submitted date 2002-11-24
Closed date 2003-01-05
Last modified date 2003-01-09

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
ADMINSVR          

SRLS

Fix information
Fixed component name WEBSPHERE AE NT
Fixed component ID 5630A2201

Applicable component levels
R400 PSY    UP


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > General
Operating system(s):
Software version: 400
Software edition:
Reference #: PQ68542
IBM Group: Software Group
Modified date: Jan 9, 2003