The CTS plug-in is an add-on that installs the software component CTS_PLUG on SAP systems. You can find details on the installation and supported SAP releases in SAP Note 1665940 .
The CTS plug-in (software component CTS_PLUG) contains the following further plug-ins:
CTS Server plug-in
This plug-in contains all central CTS functions that are required on the CTS server. The CTS server is the SAP system on which the CTS plug-in (software component CTS_PLUG) is installed. The CTS Server plug-in is release-dependent.
CTS Service plug-in
This plug-in contains the central CTS functions that are required in the managed systems.
The CTS Service plug-in is release-dependent. There is one CTS Service plug-in for each SAP NetWeaver release. For an overview of supported releases, refer to SAP Note 1665940 .
CTS Bootstrapper plug-in
This plug-in contains functions that are required to activate the CTS Server plug-in on the CTS server as well as the CTS Service plug-ins on the managed systems.
The CTS Bootstrapper plug-in is release-independent.
From a technical point of view, the CTS plug-ins are transport requests. When the CTS plug-in (software component CTS_PLUG) is installed in an SAP system, the individual plug-ins are extracted to the transport directory. The CTS Server plug-in is installed on the SAP system. This converts the SAP system into a CTS server. The CTS Service plug-ins and the CTS Bootstrapper plug-in can be distributed from the CTS server to the managed systems. Distributing the plug-in means importing the transport requests in the managed systems.
CTS Service plug-ins are independent of the SAP NetWeaver Support Package level. Therefore, they can always be installed in a system with a minimum Support Package level of the software component SAP_BASIS. When the transport request of the CTS Service plug-in is imported in the managed system, the transport request of the CTS Bootstrapper plug-in is also imported.
These characteristics enable the CTS Service and Bootstrapper plug-ins to be installed at any time, even during production operation. In particular, no system restart is necessary and there are no constraints concerning production usage. In this way, you can use the current SAP technology in SAP systems without the need to update all managed systems to the current Support Package level. You can update the managed systems in the maintenance cycles that you are used to.
The graphic illustrates which parts of the CTS plug-in exist on the CTS server and which parts exist on the managed system.
The CTS Server plug-in (software component CTS_PLUG), the CTS Service plug-in, and the CTS Bootstrapper plug-in exist on the CTS server. From there, the CTS Service and CTS Bootstrapper plug-ins are distributed to the managed system. The process is as follows:
The CTS server asks the managed system if the CTS Service and the Bootstrapper plug-ins are available and in which version.
The managed system returns the required information.
If the CTS Service and Bootstrapper plug-ins need to be updated, you can trigger the distribution from the CTS server to the managed system.
The system compares the versions of the CTS Service and Bootstrapper plug-ins on the managed systems with the versions available in the CTS server. It does not check for versions of the CTS plug-in that are available on SAP Service Marketplace.