Multi-thread

[dEnvEr]

Hi,

I am using TOracleSession, TOracleDataSet version 3.4.6.1 in my delphi 6 project.

To open the query I am using a thread because some queries take really long and I want user to be able to cancel it.

However, when I run the query first time everything is fine but if requery the dataset and run it it generates the error message '..... raised exception class EListError with message

 

[Marco Kalter]

Is the dataset connected to a datasource and controls when you open it in a thread?

------------------
Marco Kalter
Allround Automations

[This message has been edited by mkalter (edited 27 May 2002).]

 

[dEnvEr]

Yes it is connect to the datasource component.

Thanks for the interest.

 

[Marco Kalter]

The dataset/datasource/datacontrols combination is not thread safe. You cannot open a dataset in a thread when it is connected to a datasource. You need to disconnect it from the datasource, open it in a thread, and after the thread is finished, reconnect it to the datasource.

------------------
Marco Kalter
Allround Automations

 

[dEnvEr]

Thanks for answer.