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Message:

HELP! REWARD AVAILABLE!- Multi-threaded Contention Problem

Posted by Darren Silvester on 17 Dec 1998, 8:39 AM

REWARD - Any assistance which resolves the problem fully will be rewarded financially.

Technology
Java programming language running Java Webserver v1.1.1. The system connects to DB2 v3.1 via Neon's Shadow Direct ODBC Driver version 3. The technology claims to be multi-threading enabled.

Symptom
When running a number of users through the system concurrently, the system will stop responding and 'hang'

Cause
Problem has been traced to one line of code.
As the system processes the entered data, it will establish a connection into DB2(on the mainframe(MVS)), and process SQL transactions against the database to validate details.
When closing the database connection, the system 'hangs'

Please respond to darren_silvester@unipart.co.uk

• Have you solved your problem yet? If not, go to www.antssoftware.com Joe McCarthy November 29, 2001 at 4:42 AM (0)
• Contention Problem Roberta November 28, 2001 at 11:38 PM (0)