In networked applications, many workstations can run a VTS application. Because each workstation that is running the application can make changes to files, pages, and tags, a locking scheme is employed. Each file, page, and tag is referred to as a resource item.
When one workstation wants to make a change to a resource item, it must first lock that resource item so that no other workstation can make changes to the same item at the same time. Once an item becomes locked, all other workstations on the network are kept informed, and no other workstation can change that item until the lock is freed.
The configuration database (Config.db) stores the locking information for an application.
The following data is stored for each item:
The name of the item
The workstation that has the item locked
The server that allowed the item to be locked
Various lock classifiers
The date and time of the last modification of this item
Note: It is strongly recommended that you do not modify the configuration database directly, as it is strictly for use by VTS.