The maxMB parameter needs to be updated
maxMB : Maximum size in megabytes before running the garbage collector Default: 64
stackSizeKB : Size of each stack chunk in kilo octets Default: 8 -->
If your instance is hosted by Adobe, you can ask support to help you for such configuration scenarios (like checking/modifying the server configuration file).
Probably you have a instance hosted with Adobe and hence the serverconf.xml files will be present on the adobe hosted server.
David shared the location from the campaign server directory and you are looking at the campaign client installation directory .
I have no configuration folder
My version is 6.1.1 build 8857 and these are the main folders
Depends on your installation but usually under
Can you tell me where can I find the serverconf.xml file in Adobe Campaign v6 ?