RZ10 How to change SAP parameters ?

go to RZ10

You can  either search the parameter or create the parameter and then set the value to the desired and save the same

Set the parameter value in the text box provided and click copy button to copy the same and then press back button and press copy again in the next screen. After that press the back arrow

Click on Save button to save and activate the profile.

Press no to goto the next screen

Press yes, to activate the profile.

The parameter will take effect after restart of the application server