Lock Object

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Chapter 5 General Activities Palette : Lock Object

Lock Object

Shared Configuration

Lock Object shared configuration resources are used by Critical Section groups to ensure that only one process instance executes the activities in a critical section group at a time.

The Lock Object resource can be used to synchronize process instances from more than one process definition in the same process engine, or it can be used to synchronize process instances across multiple process engines.

See TIBCO ActiveMatrix BusinessWorks Process Design for more information about Critical Section groups and Lock Object resources.

Configuration

The Configuration tab has the following fields.

Field

Global Var?

Description

Name

No

The name to appear as the label for the resource.

Description

No

Short description of the shared resource.

Multi-Engine

Yes

When checked, this field specifies the resource will be used to synchronize process instances across more than one process engine. If you are using this resource to synchronize shared variable access, make sure that the Lock Object and Shared Variable resources have the same setting for this field.

When synchronization is performed across process engines, a database transaction is performed to ensure proper execution order. Therefore, you must configure your process engine to use a database for storage, if you want to synchronize Critical Section groups across process engines. See TIBCO ActiveMatrix BusinessWorks Administration for more information about specifying a database for storing process engine information.

Field	Global Var?	Description
Name	No	The name to appear as the label for the resource.
Description	No	Short description of the shared resource.
Multi-Engine	Yes	When checked, this field specifies the resource will be used to synchronize process instances across more than one process engine. If you are using this resource to synchronize shared variable access, make sure that the Lock Object and Shared Variable resources have the same setting for this field. When synchronization is performed across process engines, a database transaction is performed to ensure proper execution order. Therefore, you must configure your process engine to use a database for storage, if you want to synchronize Critical Section groups across process engines. See TIBCO ActiveMatrix BusinessWorks Administration for more information about specifying a database for storing process engine information.