Optimal Configuration of Front-End Printing
As with the other output methods, the spool work process performs the processing for front-end printing. Conflicts can occur in your SAP spool system between normal and front-end print requests. Even if you have classified spool servers and output requests (as we recommend) according to the type of output (for example, production printing or high-volume printing), frontend printing may still cause performance problems due to increased loads on the server.
Process
The following contains information about how to configure your system to avoid conflicts.
If you are using front-end printing, set up at least two spool work processes on each application server, if possible.
To do this, add the profile parameter rdisp/wp_no_spo (number of spool work processes) to the instance profile of the relevant server, and set its value to at least 2.
Set the maximum number of spool work processes that can be used for frontend printing.
By default, a maximum of one spool work process for each spool server is defined for front-end printing; that is, this spool work process can also process front-end print requests.
If a very large quantity of front-end printing is performed in your system, add profile parameter rdisp/wp_no_Fro_max to the instance profile, and increase the number of work processes.
If you want to reserve spool work processes for front-end printing, you can use the parameter rdisp/wp_no_spo_Fro_min to do this.
The spool work processes reserved with this parameter are then available exclusively for front-end printing.
So that your SAP spool system can process requests as effectively as before despite the reservation, you should increase the number of spool work processes by at least one, as one spool work process is used for front-end printing, by default.
ExampleExample: In the instance profile of the spool server mn1234_YXZ_99, the number of spool work processes is defined as 2 using the profile parameter rsdisp/wp_no_spo, and the number of spool work processes reserved for frontend printing is defined as 2 using the profile parameter rdisp/wp_no_spo_Fro_min. Increase the value of rdisp/wp_no_spo to at least 3.
End of the example.
For more information, see SAP Note 351492 in the SAP Service Marketplace.
