Dialog, Update, Locking & Output Processing

What is transaction SM13 used for?

What is transaction SM14 (Update Program Administration) for, and what do you do after updating is auto-deactivated?

How does a logical spool server improve availability and do load balancing, and which transaction creates it?

Since a work process is not bound to one user, what mechanism preserves context between dialog steps?

When creating a custom device type, why must you not edit the SAP standard type directly, and what is the right approach?

How are locks passed between the dialog process and the update process?

Why is an update system needed instead of letting the DIA write to the database at the end of each dialog step?

Is update load balancing on by default, and how do you restrict requests to specific servers?

Which report is used for update reorg, and which option is dangerous in production?

What is the difference between the Problem and Error statuses of a spool request?

Why are SAP locks called "logical locks", and how do they relate to database physical locks?

What characterizes a V1 update (processing, commit, locks)?

Which two transactions manage spool/output requests, and how do they differ?

Why can a logical spool server be built in the dev system and transported to others, and what is the cost of enabling load balancing?

Through what object does ABAP implement locking, and which two function modules are auto-generated for it?

What problem does the Printing Assistant for Landscapes (PAL) solve?

What is the difference between synchronous and asynchronous update?

What print-timing options are there when creating a spool request?

Why does printing take two steps, and what does the spool request vs output request each hold?

What is multiplexing in dialog processing?

What is an LUW (logical unit of work), and how does it end?

What are the four ACID properties that an LUW follows?

Which transaction manages lock entries, and what is its alias?

How is a V3 (collective run) update triggered, and how does it appear in SM13?

What is the difference between immediate/local and deferred update?

What do the values 1 and 2 of `rdisp/vb_delete_after_execution` mean?

What do the `_SCOPE` values 1, 2, and 3 decide about who owns a lock and when it is released?

Which access method is used for frontend printing, and what are its limitations?

From S/4HANA 2020 on, which kind of parameter should control the dialog step runtime timeout?

What notification does a user get when an update fails, and how do global and local errors differ?

What does a device type describe, how many ship with the system, and what if yours is missing?

Why are locks handed to the update written to a backup file, and which parameter specifies it?

What does each of the four core update tables store?

What does the `rdisp/vbdelete` parameter control, and what is its default?

In SM12, what do the black and blue lock entries represent?

Where is the lock table held, and why is it not in the database?

What lock-related limits does `enq/server/schema_0` configure, and which old parameter did it replace?

When a user logs on, how does the dispatcher assign them a dialog work process?

In SAP, what decides the update method (synchronous/asynchronous/local), and can the user choose it?

Which access methods are used for external output management (OMS) and email?

What routine checks should be done to operate the enqueue lock system, and what tool diagnoses it from the command line?

At what point is a lock handed over from the dialog process to the update process?

What do lock modes S, E, X, and O mean?

Which parameters set the number of UPD and UP2 processes, and what is the initial sizing guidance?

Which transaction checks TemSe consistency, and which tables does it compare?

How does a V2 update differ from V1 in terms of LUW division and locks?

With load balancing configured, how does the logon connection process differ, and how is the binding after logon?

What is a physical spool server, and which parameter sets its process count?

Which transaction is used alongside SM13 to read error codes when troubleshooting updates? Give a few codes.

Which platforms do local access methods L and C serve, and what are their pros/cons?

Before force-deleting a lock in SM12, what should you check first?

What is the default value of `enque/process_location`, and what does it mean?

What do the remote access methods U and S correspond to?

Which parameter sets the TemSe storage location, and what does each value mean?