PQ76114: ADMIN SERVER HANGS WITH SECURITY ON. YOU WILL SEE MANY ORB THREADS IN _REGISTRY_STUB.GETTYPE FROM KILL -3. | |||||||||||||||||||||||||||||||||||
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![]() APAR status Closed as program error. Error description The admin server can sometime hang when security is turned on. When looking at the javacores, you can see many ORB threads are in the following state: at org.omg.CORBA.portable.ObjectImpl._request(ObjectImpl.java: 428) at com.ibm.ejs.security.registry._Registry_Stub.getType( _Registry_Stub.java:605) at com.ibm.ejs.security.ltpa.LTPAServerObject.<init>( LTPAServerObject.java:73) In the middle of the ORB Threads. Now this happens with LDAP, not local OS security. This fix helps improve the performance by making the admin cache this information.Local fix Problem summary **************************************************************** * USERS AFFECTED: All WebSphere Application Server users who * * have security enabled. * **************************************************************** * PROBLEM DESCRIPTION: Threads in the administration server * * get into a dead locked state. * **************************************************************** * RECOMMENDATION: * **************************************************************** Threads in the admin server get into a dead locked state. This problem is not seen often and is likely related to a high application server to administration server topology which is not a recommended configuration. The specific system in question had 50+ application servers to one administration server.Problem conclusion The dead lock condition was caused by a redundant EJB call. The return value of this call is now cached so that the call only needs to be made once instead of each time a new credential is created.Temporary fix PQ76114_Test.jarComments
APAR is sysrouted FROM one or more of the following: APAR is sysrouted TO one or more of the following: Modules/Macros
SRLS
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Document Information |
Product categories: Software > Application Servers >
Distributed Application & Web Servers > WebSphere Application
Server > General
Operating system(s):
Software version: 400
Software edition:
Reference #: PQ76114
IBM Group: Software Group
Modified date: Aug 25, 2003
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