Tuesday, 9 July 2013

What is SAP Spool process work flow

Step 1. A dialog user or a background process initializes a print request.

Step 2. The print requests are stored in a location which is determined by a parameter ‘RSPO/Store_location = G’.........(G- Global directory at OS level) or
‘RSPO/Store_location = DB’......(DB- In database tables)


This location is referred as “Temse”( Temporary Sequential File).
‘Temse’ stores spool requests
Temse is stored in Global directory when it is referred as ‘G’. It is stored in database tables TST01 ; TST03. If it is referred as ‘DB’ .

By default the value is ‘DB’.

G: (Global Directory on Application Server):

1. If G is specified it is stored at OS level
2. The printing will be faster if there are less no of documents. Because from file system to spooler

The communication faster than database to host spooler



Advantages:

1. No special attention is required to backup the spool requests.
2. RDBMS rules are inherited to spool requests, because they are in the Database

Disadvantages:

1.A dedicated backup has to be planned to save the contents of Global directory.
2. When the records are more the printing consumes more time because of ‘Lack of indexes’ at file system.

Step 3 Spool process gets initiated and reads the contents from ‘TST01’ name of the Author, no of copies name of the printer and spool data from ‘TST03’. And converts spool requests into “Output Requests’ (Printer specific requests).



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