8/9/2019 Overview of Operation Mode-SAP 08Jul2010

1/2

Rajagopalan M

08/Jul/2010 1 of 2

Overview of Operation Mode - SAP

Different work processes exist in an SAP system. These include dialog, background, spool,enqueue and update work processes. These work processes are of various types, use and differsin the minimum number that can be defined per dispatcher or in an SAP system.

As regards operation mode, the dialog and background work processes are of high importance.The dialog work process allows front end interaction with the SAP system while the backgroundwork process is used to handle background jobs.

Every dispatcher requires at least two dialog work processes. At least one background workprocess must exist in an SAP system. You can configure more than one background workprocess per dispatcher. Depending on the workload and the time, the number of both dialog andbackground work processes can be increased to meet the immediate system need.

Usually, at peak periods (may be during the day - DayTime), more users are connected to theSAP system and less background jobs are active, thus, enough dialog work process must beavailable for optimal transaction processing. In same vein, during off peak period (may be duringthe night - NightTime), less users are connected but more background jobs are active, hence,enough background work process must be available.

SAP offers functionality to automatically switch work process distribution especially betweendialog work process and background work process. The essence is to optimize systemperformance. By defining operation mode, work process and system resources are better utilized.

http://www.flickr.com/photos/50326522@N00/3238802206/

8/9/2019 Overview of Operation Mode-SAP 08Jul2010

2/2

Rajagopalan M

08/Jul/2010 2 of 2

During peak period (as stated above), more dialog work process will be available for dialog usersand during off peak periods (as stated above), more background work process is available forbackground job processing. Using this functionality, work process or system resources are notwasted and performance is optimized.

At operation mode change, work process is automatically redistributed without shutting down theinstance. Typically, the total number of work process remains the same, only a switch occurs, forexample a work process used for dialog processing is switched for background processing. Theswitching of work process may not be instantaneous as new process type is not activated until aprocess is free. When work processes are redistributed, the event is recorded in the system log.

The following activities need to be performed when configuring operation modes:

1. Create the operation mode using transaction RZ042. Assign instance attributes to an operation mode using transaction RZ043. Specify the distribution of dialog and background processes for the operation mode usingtransaction RZ044. Assign the operation mode through transaction SM63

Source:http://www.google.co.in/url?sa=t&source=web&cd=6&ved=0CDAQFjAF&url=http%3A%2F%2Fit.toolbox.com%2Fblogs%2Fsap-library%2Foverview-of-operation-mode-29645&ei=TKc1TJrqGMm7rAfwxpzfAw&usg=AFQjCNHDVqImkrnWXMuuQHfImMDdaAKd9g

http://www.google.co.in/url?sa=t&source=web&cd=6&ved=0CDAQFjAF&url=http%3A%2F%2Fit.toolbox.com%2Fblogs%2Fsap-library%2Foverview-of-operation-mode-29645&ei=TKc1TJrqGMm7rAfwxpzfAw&usg=AFQjCNHDVqImkrnWXMuuQHfImMDdaAKd9ghttp://www.google.co.in/url?sa=t&source=web&cd=6&ved=0CDAQFjAF&url=http%3A%2F%2Fit.toolbox.com%2Fblogs%2Fsap-library%2Foverview-of-operation-mode-29645&ei=TKc1TJrqGMm7rAfwxpzfAw&usg=AFQjCNHDVqImkrnWXMuuQHfImMDdaAKd9ghttp://www.google.co.in/url?sa=t&source=web&cd=6&ved=0CDAQFjAF&url=http%3A%2F%2Fit.toolbox.com%2Fblogs%2Fsap-library%2Foverview-of-operation-mode-29645&ei=TKc1TJrqGMm7rAfwxpzfAw&usg=AFQjCNHDVqImkrnWXMuuQHfImMDdaAKd9ghttp://www.google.co.in/url?sa=t&source=web&cd=6&ved=0CDAQFjAF&url=http%3A%2F%2Fit.toolbox.com%2Fblogs%2Fsap-library%2Foverview-of-operation-mode-29645&ei=TKc1TJrqGMm7rAfwxpzfAw&usg=AFQjCNHDVqImkrnWXMuuQHfImMDdaAKd9ghttp://www.google.co.in/url?sa=t&source=web&cd=6&ved=0CDAQFjAF&url=http%3A%2F%2Fit.toolbox.com%2Fblogs%2Fsap-library%2Foverview-of-operation-mode-29645&ei=TKc1TJrqGMm7rAfwxpzfAw&usg=AFQjCNHDVqImkrnWXMuuQHfImMDdaAKd9ghttp://www.google.co.in/url?sa=t&source=web&cd=6&ved=0CDAQFjAF&url=http%3A%2F%2Fit.toolbox.com%2Fblogs%2Fsap-library%2Foverview-of-operation-mode-29645&ei=TKc1TJrqGMm7rAfwxpzfAw&usg=AFQjCNHDVqImkrnWXMuuQHfImMDdaAKd9ghttp://www.google.co.in/url?sa=t&source=web&cd=6&ved=0CDAQFjAF&url=http%3A%2F%2Fit.toolbox.com%2Fblogs%2Fsap-library%2Foverview-of-operation-mode-29645&ei=TKc1TJrqGMm7rAfwxpzfAw&usg=AFQjCNHDVqImkrnWXMuuQHfImMDdaAKd9g