noni

• Sep 27th, 2006

 

LUM - is initials of

Linux, Unix, Windows

Hardik Mehta

• Oct 3rd, 2006

 

SAP LUW is the Logical Unit of Work, the smallest process which carry logical information.

There are different types of work processes viz. Dialog, Background, Spool, Update and Lock Processes.

Shimank Jain

• Oct 4th, 2011

 

Ans Two types of LUW are:

1) DB LUW - A database LUW is the mechanism used by the database to ensure that its data is always consistent. A database LUW is an inseparable sequence of database operations that ends with a database commit. The database LUW is either fully executed by the database system or not at all. Once a database LUW has been successfully executed, the database will be in a consistent state. If an error occurs within a database LUW, all of the database changes since the beginning of the database LUW are reversed. This leaves the database in the state it had before the transaction started.
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2) SAP LUW - A logical unit consisting of dialog steps, whose changes are written to the database in a single database LUW is called an SAP LUW. Unlike a database LUW, an SAP LUW can span several dialog steps, and be executed using a series of different work processes.


Thanks,
Shimank Jain