Starting, Stopping & Profile Parameters

What restart is needed after changing an instance profile versus the system profile (DEFAULT.PFL)?

On Windows, how is an SAP system started, and what does choosing Start on the SID do?

How can a parameter be changed at runtime without restarting, and what is the role of RZ11?

If an SAP system fails to start, what should you isolate first?

After saving a profile in RZ10, what does Profile > Activate do, and when do the values take effect?

What is the precedence order of SAP profile parameters?

How do you stop an SAP system on UNIX versus Windows?

Where are startup logs written, and why do they matter?

In what order does an SAP system shut down?

What does the instance profile configure?

What is a soft (graceful) shutdown, and where do you trigger it?

In what order does an SAP system start up?

On UNIX, which script starts an SAP system, and what do its -t and -i options control?

In current SAP systems, which command-line tool replaces the deprecated startsap and stopsap scripts?

Which transaction centrally maintains SAP profiles, and what features does it provide?

What are the three editing modes in RZ10 profile maintenance?

What are the three profile types an SAP system uses?

How many profiles do modern SAP systems (7.1+) have, after the start profile was discontinued?

What does report RSPARAM show, and which values does it NOT show?

Where is the TCP/IP port for frontend-to-message-server communication stored?

Which parameters control soft-shutdown behavior, and what do gui_auto_logout and disable_gui_login do?

Why must profiles be imported into the database before editing them in RZ10?

At OS level, what do sappfpar and memlimits do?

What does the start profile determine?