PQ60430: CMP ENTITY BEANS ACCESSED VIA STATELESS SESSION BEAN BLOCKED | |||||||||||||||||||||||||||||||||||||
![]() |
|||||||||||||||||||||||||||||||||||||
APAR status Closed as program error. Error description CMP entity beans accessed via stateless session bean get blocked when the container detects transaction time out, namely they get severe blocking (a new transaction waits until "Connection time out"). Transactions are container managed. After the timeout the transaction is rolled back but the row for the first entity bean remain locked in DB.Local fix Problem summary **************************************************************** * USERS AFFECTED: WebSphere Application Server users of * * PreparedStatements inside Connection * * Management. * **************************************************************** * PROBLEM DESCRIPTION: Locks not freeing after Transaction * * Timeout occurs and problems using * * prepared statements. * **************************************************************** * RECOMMENDATION: * **************************************************************** 1. Locks not freeing after Transaction Timeout occurs. 2. When using prepared statements, an error can occur and work involving the prepared statement is not completed and the connection is not rolled back nor returned to the connection pool.Problem conclusion 1) Rollbacks are delayed when the transaction timeout occurs and there is still work in progress for the transaction. Normally what should happen is that the rollback will be performed when the work in progress completes. However, there are times when the rollback will not occur due to the connection having been marked closed before the work has completed. This fix ensures that the rollback will be performed and so the locks will be freed. 2) Closes on prepared statements were not being properly synchronized, this has been fixed.Temporary fix The customer has the final E-Fix for the ASV35 release.Comments
APAR is sysrouted FROM one or more of the following: PQ52986 APAR is sysrouted TO one or more of the following: Modules/Macros
|
Document Information |
Product categories: Software > Application Servers >
Distributed Application & Web Servers > WebSphere Application
Server > General
Operating system(s):
Software version: 400
Software edition:
Reference #: PQ60430
IBM Group: Software Group
Modified date: Apr 23, 2002
(C) Copyright IBM Corporation 2000, 2006. All Rights Reserved.