IBM Support

Slowness and intermittent disconnects on Datacap Web and Datacap Navigator while executing validation rules

How To


Summary

Datacap Web Services client applications such as Datacap Navigator or Datacap Web Client (TMWeb) experiencing random disconnects or performance issues, particularly when executing validation rules. These problems become more pronounced with increased user load.

A single application pool worker process (w3wp.exe) or Datacap Windows Service (wTMservice.exe) running validation tasks, user logins, and other application requests under a high load can result in high CPU usage, memory leaks, unhandled exceptions, and resource exhaustion.

Objective

When running Datacap Web Services and or Datacap Navigator Scan or Verify operations, it is essential to configure a specific registry key to enable eRRO.
 
Enabling the eRRO registry for Datacap Web Services creates a separate process, eRRo.exe, dedicated to handle validation rules on Datacap Web Server (TMWeb) or Datacap wTM Server. The eRRO.exe process is instantiated upon clicking the Submit or Run Validations button within the verify UI. When validation is complete, the eRRO.exe process is released.

Steps

To enable the eRRO feature on the Datacap wTM or TMWeb server:
 
1. Open a command prompt and type regedit.exe to open Registry Editor 
2. Navigate to the following registry key and create or set the existing "Use eRRO" value
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Datacap\RRS]
"Use eRRO"=dword:00000001
image-20250703171405-1
The following  example image shows two separate Datacap Navigator verify sessions running validations and how each of them has it's own eRRO.exe process, as seen in Windows Task Manager.
image-20250703171502-2

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Document Information

Modified date:
22 February 2024

UID

ibm10792169