Pentaho

just put the command line to start the carte server in a bat file.

I would put 2 lines in the bat file. First to stop the carte server

example when carte.bat file in same directory as bat file

carte.bat 127.0.0.1 8080 -s -p password -u user

and the second line to start the server

carte.bat 127.0.0.1 8080

In the past I also had some memory issue's with carte. I solved that by checking  in the first transformation entry

"Clear results row before execution" and "Clear result files before execution"

Ok but what command do you use to actually kill the carte server so you don't start a new one while the old one is still running?

And did I get that right: for every job that you have, you set the first transformation always like that?

The command to stop carte is : carte.bat 127.0.0.1 8080 -s -p password -u user

see: https://help.pentaho.com/Documentation/8.3/Products/Use_Carte_Clusters

These settings I use for jobs which are always running and the sceduling is set in the job