17-05-07 ABAP FAQ's

->What is the means of communications between R/3 and external applications ?
Ans) The means of communication between R/2, R/3 and external applications is via the CPI-C handler or SAP Gateway, using the CPI-C Protocol.

->What is the protocol used by SAP Gateway process ?
Ans) The SAP Gateway process communicates with the clients based on the TCP/IP Protocol.


->Expand CPI-C .
Ans) Common Program Interface Communication.

->What is a Spool request?
Ans) Spool requests are generated during dialog or background processing and placed in the spool database with information about the printer and print format. The actual data is placed in the Tem Se (Temporary Sequential objects).

->What are different type of Log records?
Ans) V1 and V2. V1 must be processed before V2. But, we can have more than one V2 logs.

->What are the types of Update requests ?
Ans) An update request can be divided into one primary (V1) and several Secondary update components (V2). Time-critical operations are placed in V1 component and those whose timing are less critical are placed in V2 components. If a V1 update fails, V2 compnents will not be processed.

Dialog work processes perform only one dialog step and then available for the next request.

->Explain what is a transaction in SAP terminology.
Ans) In SAP terminology, a transaction is series of logically connected dialog steps.