Dade error

rbuser

Checking the error logs of one of our customers server machine we see
that often when running (previewing) a report the following error is
occurring:

NexusDB: : System has been illegally
re-entered. [$2107/8455].

This could indicate that there is some problem with threaded session
management in the Nexus database engine, even though our application
doesn't deploy any multi-threaded code. Is possible that any RB
multi-threaded code could by involved?

P.S. When a report is "run" a datamodule is created with all the
necessary components hooked together, you can probably work it our from
the class definition:

TnxRBExecuteDM = class(TDataModule)
Report : TppReport;
dsReports : TDataSource;
ReportPipeline : TppDBPipeline;
QReports : TnxQuery;
nxDatabaseMapper1 : TnxDatabaseMapper;
NexusRBDatabase : TnxDatabase;
private
public
constructor Create(aOwner : Tcomponent; aReportDetails :
TReportDetails); reintroduce;
{ Public declarations }
end;

Thanks, Paul

nicocizik

Hi Paul,

ReportBuilder uses threading for background printing, previewing in RB
14 or later, and the Server.

If you are not creating a server, you can disable threading by disabling
Background Printing and setting the PreviewFormSettings.SinglePageOnly
property to True. This way you can test if the RB threading is causing
the issue.