- Transaction Mode

The Transaction Mode is a property of the Main Server. It sets how data is written to the project database. Its value during normal operation is Logging. It may need to be switched to Simple to speed up certain configuration import tasks. This switch can be performed manually, or you can set the system to always switch the Transaction Mode automatically (recommended).

 

Property

Values

Commands

Transaction Mode

Logging

Setting used during normal operation.
Internal transactions are completed only after all the internal data is written to disk. This guarantees the database integrity and prevents data loss or database corruption over crashes or hardware failures.

From the drop-down list select Simple or Logging and click Set.

Simple

Setting used for bulk engineering activities, such as importing subsystem data.
It allows configuration tasks to be completed faster. However, in the event of a system crash or hardware failure, any unsaved data might be lost and the stored data might be corrupted.

NOTE: To prevent data loss, the Desigo CC station generates an event when the Transaction Mode is set to Simple, to remind users to switch it back to Logging.

Automatic Switch of Transaction Mode

True

The Transaction Mode is automatically set to Simple when a data import starts, and back to Logging when the import is completed.

From the drop-down list select True or False and click Apply.

False

The Transaction Mode will not be automatically switched. The manual commands must be used to set it to Simple before a configuration import and then back to Logging afterwards.

Set Transaction Mode to Switch Automatically

You can enable automatic switching of the transaction mode as follows. This avoids having to manually switch the Transaction Mode before and after import operations.

  1. In System Browser, select Management View.
  1. Select Project > Management System > Servers > Main Server.
  1. Select the Extended Operation tab.
  1. Set Automatic Switch of Transaction Mode property to True.
  1. Click Apply.
  • When any import operation starts, the Transaction Mode will be set to Simple automatically, and then set back to Logging when the import operation is completed.

Manually Set the Transaction Mode

If the automatic switching is not enabled, the Transaction Mode must be manually set as follows:

  1. In System Browser, select Management View.
  1. Select Project > Management System > Servers > Main Server.
  1. In the Extended Operation tab, do the following:
  • To increase system performance during bulk engineering activities, set Transaction Mode to Simple and then click Set.
  • When bulk engineering activities are completed, switch Transaction Mode back to Logging and then click Set.