PVSS is a supervisory control and data acquisition (SCADA) system used extensively at CERN to protect the experiment equipment. The ETM’s PVSS related activities of the openlab started in February 2009 and have been focused on training while handling some development tasks.

Besides achievements on the Installation Tool, a tool which allows automated deployment of PVSS-based applications in the CERN environment, and porting the PVSS CVS plugin to SVN, a major contribution was already delivered on the Oracle Archiver code.

The purpose of the PVSS Oracle Archiver is to store/retrieve historical data and alarms. It is widely used at CERN and by other ETM clients. With the introduction of the version 3.8.1 of PVSS, some stability and performance issues have been identified. These issues have been solved in the context of the openlab in collaboration with ETM’s developers in Eisenstadt. The fixes have been distributed through an official patch release for the benefit of the whole ETM’s users’ community.