Solved

Deadlock detected. Deadlock (argh!)

Posted on 1998-03-21
1
493 Views
Last Modified: 2008-02-01
I have a huge problem, I have some (as in more than one) applications each application is multithreaded and they may not even run on the same machine, these apps access the same interbase database and the same tables, this created dreadlocks (not really, but BDE thinks so) so BDE throws exceptions all over the place, I have gated all my Tquery.execsql and Tquery.open  calls with try...except blocks where I handle any exceptions, but to no avail, I cannot find the exact call that gennerates the exception.

My question is this: how do I catch the deadlock-exceptions and what calls cause them?
0
Comment
Question by:ffrand
1 Comment
 
LVL 1

Accepted Solution

by:
RJENKINS earned 340 total points
ID: 1360671
Try this in the BDE Admin in the Interbase driver config

From SQL Links Tech Support - www.borland.com
---
The Interbase SQL Links driver can be set to use "soft commit"
instead of "hard commit" by setting the Interbase DRIVER FLAGS to
either 4096 or 4068 (please see the READLINK.TXT fro details.)  
The current (BDE 4.0) drawback to this (at least until the next
version of the Interbase SQL Links driver comes out [v4.01]) is
that NO WAIT is used with NO RECORD VERSION which can result in
immediate deadlocks.By adding 512 to the DRIVER FLAGS param you are setting the
driver default back to a REPEATABLE READ (RECORD VERSION)
isolation level which helps to avoid a "deadlock detected error" condition.
---

I use 4608 and it seems to have solved our problems
(D3 C/S and BDE 4.51)

Hope this helps
RCJ
0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

The uses clause is one of those things that just tends to grow and grow. Most of the time this is in the main form, as it's from this form that all others are called. If you have a big application (including many forms), the uses clause in the in…
This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
This Micro Tutorial will give you a basic overview how to record your screen with Microsoft Expression Encoder. This program is still free and open for the public to download. This will be demonstrated using Microsoft Expression Encoder 4.
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.

810 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question