VTS (Virtual Table Server) is a web-based application that works with Vuser scripts. VTS offers an alternative to standard VuGen parameterization.
When you use standard parameterization, each Vuser is assigned parameter values from a dedicated set of values - parameter values are not shared between Vusers. In contrast, VTS enables you to assign parameter values from a single set of parameter values to multiple Vusers. This may enable you to more accurately emulate a real-user environment.
VTS is composed of two components, VTS-Client and VTS-Server. VTS-Client is a set of API functions that are used to access data in VTS-Server. Because the VTS API functions integrate with VuGen, there is no need to install VTS-Client. VTS-Server includes a table that contains parameter values that can be used by your Vuser scripts. The VTS table is composed of columns and rows. Each column represents a set of values that can be assigned to a specific parameter in your Vuser scripts. The cells within a column contain the actual values that are assigned to the parameter.
To install VTS, see Install VTS.
Note: Significant changes were made to VTS in LoadRunner version 11.52. When upgrading to a later version, these changes may result in various compatibility issues. For details on script modifications that are required in order to resolve these compatibility issues, see Preparing Vuser Scripts for VTS Parameterization.