SAP spool tips & tricks

Spool number range and status

If your spool system for printing is getting out of numbers, the printing stops and even endangers your complete system. The signal is shortdump COMPUTE_BCD_OVERFLOW as described in OSS note 2208342 – Shortdump COMPUTE_BCD_OVERFLOW.

Checking spool number range can be done via program
RSPO_SHOW_SPO_NUM . Background is in OSS note 2635724 – Monitor or Display Spool Range Limit and Status.

To solve spool number range issues follow the instructions in OSS note 48284 – System cannot generate any more spool requests.

Avoiding large spool in background job output

If you have a batch job with large spool output and you never look at it, you can also setup device type NULL to immediately delete the output. This way the spool system is not filled up. For setup see this blog.

Transaction SPOOL

Transaction SPOOL contains links to most important spool transactions. See this dedicated blog.

Transaction SPOOL

Transaction SPOOL can be used as a central starting place for all printing and spool related settings, tools, error analysis.

Simply start transaction SPOOL:

Now switch from Standard Mode to Expert Mode to enable all tool.

Double clicking on the line will start the tool. On the right hand side are the transaction codes and the OSS note numbers for specific additional explanation.

Output device NULL

For some batch jobs you want to have the execution done and don’t want to fill up your system with large spool files of this execution. This blog will explain to setup printer NULL to have a batch job suppress the output generation.

Questions that that will be answered in this blog are:

  • How do I setup printer NULL?
  • How to test the setup of printer NULL?
  • Where to find more background information on printer NULL?

Setup of printer NULL

Start transaction SPAD to define a new printer. Now create printer call NULL (with long and short name both NULL):

Output device NULL SPAD

Select a simple windows driver. Fill the other mandatory fields. Add the message description clearly that the output will be lost.

Save the printer definition.

Testing the NULL printer

From the blog explaining the technical clean up we will take program RSWWHIDE. This program generates huge amount of output (per deleted item 3 to 10 lines). We will run the program twice in test mode: once with printer NULL and once with printer LP01 (default printer). Selection of printer NULL is same as with any printer:

Selection of printer NULL

Result in SM37:

Run with NULL or LP01

The first run with printer NULL has suppressed the generation of the spool file.

Background OSS note

All background on output device NULL can be read in OSS note 181571 – Output device NULL.