Hello Fabrice, > Then i defined this environment variable : > export XRDLCLROOT=/opt/qserv-dev/xrootd-run/ Please do not do this. XRDLCLROOT is not user-set. It is a value set by xrootd. > Then, looking at the source code : "worker/src/MySqlExportMgr.cc" : > I figured out that a database with next name should exists : > qserrvw_" + instanceName + "." + "Dbs" Please see the documentation in the ticket for this new dependency: https://dev.lsstcorp.org/trac/ticket/2478 Let me know if things are still broken after trying Jacek's suggestion. > (Furthermore, as i test in a mono-node instance, cmsd is'nt started.) Our configuration is a bit *wrong* for single-node environments. Single-node was never a priority (and really, more of an afterthought), but we seem to be relying on it more and more, so I will check with AndyH about how to configure an xrootd for single-node operation. -Daniel ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the QSERV-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=QSERV-L&A=1