i again,

about the first problem i see in the lightstreamer shell that the class can't found the driver to open a connection with the DB. i don't understand why this happend, because i add to the classpath the path of the jar file.

i see is necessary to add the library into the LS server, i do some test to add the jar file in some folders and the problem is solved i add "mysql-connector-java-5.1.7-bin.jar" into /shared/lib/ folder and all works fine.

about the other two questions, somebody can helpme??

regards