PQ70391: PID OF APP SERVER IS NOT GOING AWAY WHEN APP SERVER DOES NOT FULL INITIALIZED LEADING TO LARGE NUMBER OF GHOST PID AND SYSTEM CR | |||||||||||||||||||||||||||||||||||
![]() |
|||||||||||||||||||||||||||||||||||
![]() APAR status Closed as program error. Error description PID of app server is not going away after the app server did not fully come up. This lead to large number of PID for the failing app server and cause the opsys to crash.Local fix Problem summary **************************************************************** * USERS AFFECTED: All users of WebSphere Application * * Server 4.0 * **************************************************************** * PROBLEM DESCRIPTION: When an application server fails * * during initialization, the admin * * server may restart it continuously. * * The user will see large numbers of * * app servers in output of "ps". * **************************************************************** * RECOMMENDATION: * **************************************************************** The distinguishing characteristics of this problem would be large number of instances of same app server appearing in the system process table. These are NOT zombie or defunct processes - they real processes using real resources. The only way to terminate this behavior is to stop the admin server.Problem conclusion There was a subtle problem in the way that WebSphere admin server was handling restart logic for an app server that would lead to a truly exponential growth in number of servers started. Added logic to keep track of whether a server start was in progress and, if another request came in to start an already started server, we now recognize that and terminate the thread that would have gone on to propagate more and more server instances. This does not mean that you cannot restart a server - only that we will not automatically start one if a copy of that server is already running.Temporary fix PQ70391_Test.jar and readme.txt submitted to: pq99999.raleigh.ibm.comComments
APAR is sysrouted FROM one or more of the following: APAR is sysrouted TO one or more of the following: Modules/Macros
SRLS
|
Document Information |
Product categories: Software > Application Servers >
Distributed Application & Web Servers > WebSphere Application
Server > General
Operating system(s):
Software version: 400
Software edition:
Reference #: PQ70391
IBM Group: Software Group
Modified date: Apr 3, 2003
(C) Copyright IBM Corporation 2000, 2006. All Rights Reserved.