Hi Junaid ,
You dont need to worry about the above j2ee parameters when the check is done from the RZ10 .
When you change any parameter check only whether you have issues with the changed parameter
You can go back to an older version as suggested by Peter above or more better you can load an old version in RZ10 itself by putting the version number .
When you edit any ABAP parameter it is always a good practice to do it from RZ10
Thanks ,
Manu