# unix
myscript.pl file1.sql &
myscript.pl file2.sql &
myscript.pl file3.sql &
myscript.pl file4.sql &
myscript.pl file5.sql &
myscript.pl file6.sql &

##</code><code>##

# Windows
start perl myscript.pl file1.sql
start perl myscript.pl file2.sql
start perl myscript.pl file3.sql
start perl myscript.pl file4.sql
start perl myscript.pl file5.sql
start perl myscript.pl file6.sql