topic Re: memory in Application Development and Automation Discussions

memory

Former Member — Fri, 06 Jul 2007 09:58:55 GMT

What is the difference between SAP Memory and ABAP Memory?

Re: memory

Former Member — Fri, 06 Jul 2007 10:00:45 GMT

SAP memory is a memory area to which all main sessions within a SAPgui have access. You can use SAP memory either to pass data from one program to another within a session, or to pass data from one session to another. Application programs that use SAP memory must do so using SPA/GPA parameters (also known as SET/GET parameters). These parameters can be set either for a particular user or for a particular program using the SET PARAMETER statement. Other ABAP programs can then retrieve the set parameters using the GET PARAMETER statement. The most frequent use of SPA/GPA parameters is to fill input fields on screens

SAP global memory retains field value through out session.

set parameter id 'MAT' field v_matnr.

get parameter id 'MAT' field v_matnr.

They are stored in table TPARA.

ABAP memory is a memory area that all ABAP programs within the same internal session can access using the EXPORT and IMPORT statements. Data within this area remains intact during a whole sequence of program calls. To pass data

to a program which you are calling, the data needs to be placed in ABAP memory before the call is made. The internal session of the called program then replaces that of the calling program. The program called can then read from the ABAP memory. If control is then returned to the program which made the initial call, the same process operates in reverse.

ABAP memory is temporary and values are retained in same LUW.

export itab to memory id 'TEST'.

import itab from memory Id 'TEST'.

Here itab should be declared of same type and length.

http://www.sap-img.com/abap/difference-between-sap-and-abap-memory.htm

ABAP Memmory & SAP Memmory

http://www.sap-img.com/abap/difference-between-sap-and-abap-memory.htm

http://www.sap-img.com/abap/type-and-uses-of-lock-objects-in-sap.htm

Reward points for useful Answers

Regards

Anji

Re: memory

Former Member — Fri, 06 Jul 2007 10:03:06 GMT

Parameters in the SAP Memory

SPA/GPA parameters

The SAP Memory is a user-specific memory area of the application server, which is accessed by all main sessions of a user session at once. ABAP programs have access to SPA/GPA parameters stored in the SAP Memory (also called SET/GET parameters).

Each SPA/GPA parameter is identified by an ID of up to 20 characters. SPA/GPA parameters can either be created explicitly using the statement SET PARAMETER, or implicitly in a PAI event. They are then available to any programs and any sessions throughout the whole duration of a user session.

One example of a program that uses SPA/GPA parameters is user maintenance (transaction SU01). In this transaction, on the Parameters tab page, you can enter user-specific parameters, which are then set when the user logs on to the SAP system, and are evaluated by other programs.

Administrating SPA/GPA parameters

The names of SPA/GPA parameters are administrated in the database table TPARA. In the Object Navigator of the ABAP Workbench, the names of SPA/GPA parameters are created in the database table TPARA in upper case, and are linked to packages. The database table TPARA acts as a reservation table for SPA/GPA parameters. If you use SPA/GPA parameters in a program, you should ensure that the name of the parameter is contained in the PARAMID column of the database table TPARA. The SPA/GPA parameters of other applications should not be unintentionally overwritten.

Note

If a name exists in the database table TPARA, this does not automatically mean that the corresponding parameter also exists in the SAP Memory. SPA/GPA parameters are exclusively created during execution of an ABAP program.

SPA/GPA parameters and screen errors

When defining input fields, you can link screen fields to SPA/GPA parameters by entering the name of an SPA/GPA parameter from the database table TPARA as an attribute PARAMETER ID. If the corresponding parameter GET PARAMETER is set and no other value is assigned to the input field, the input field is filled with the value of the SPA/GPA parameter when the screen is sent. If the corresponding attribute SET PARAMETER is set, the content of the input field is assigned to the SPA/GPA parameter at the PAI event. If the parameter does not yet exist in the SAP Memory, it is implicitly created at the PAI event. In selection screens, you can create this link by using the MEMORY ID addition to the statements PARAMETERS and SELECT-OPTIONS.

Notes

A data transport between a screen field and an SPA/GPA parameter in the SAP Memory only takes place if a global data object with the same name as the screen field is declared in the corresponding ABAP program.

If the PAI event is triggered using a function of type "E", no values are assigned to the SPA/GPA parameters that are linked with the screen, and no parameters are created in the SAP Memory.

ABAP Memory

Memory area within every main session, which the programs with the statements EXPORT and IMPORT can access. This memory area is maintained via a succession of program calls (call sequence).

Regards,

Pavan P.

Re: memory

Former Member — Fri, 06 Jul 2007 10:14:32 GMT

Hi,

The main Difference between SAP memory and ABAP memory is

SAP MEMORY:

********************

SAP memory is same as Global variable, the Data dictonary related items such as Tables will store in SAP memory.

SAP memory datas can retrive any where of the program

ABAP MEMORY:

********************

*ABAP memory is same Local variable, our program variable is storing in ABAP memory.

*ABAP memory datas can access within that program

IF HELPFULL REWARD

Re: memory

varma_narayana — Fri, 06 Jul 2007 10:21:34 GMT

hI..

ABAP memory:

1. Session Specific (Each session window will have its own ABAP memory)

2. Using EXPORT and IMPORT statements we can pass the and read the data

2. We can pass all type of variables including internal tables

SAP memory:

1. Login Session Specific(Available accross the session windows)

2. Using SET PARAMETER / GET PARAMETER we can pass the data.

3. We can use it to pass the data to SCREEN fields only .

reward of helpful

Re: memory

Former Member — Fri, 06 Jul 2007 10:36:11 GMT

Hi,

The main Difference between SAP memory and ABAP memory is

SAP MEMORY:

********************

SAP memory is same as Global variable, the Data dictonary related items such as Tables will store in SAP memory.

SAP memory datas can retrive any where of the program

ABAP MEMORY:

********************

*ABAP memory is same Local variable, our program variable is storing in ABAP memory.

Re: memory

Former Member — Fri, 06 Jul 2007 10:39:04 GMT

SAP Memory

ABAP/4 Memory

SAP memory

The SAP memory, otherwise known as the global memory, is available to a user during the entire duration of a terminal session. Its contents are retained across transaction boundaries as well as external and internal sessions. The SET PARAMETER and GET PARAMETER statements allow you to write to, or read from, the SAP memory.

ABAP/4 memory

The contents of the ABAP/4 memory are retained only during the lifetime of an external session (see also Organization of Modularization Units). You can retain or pass data across internal sessions. The EXPORT TO MEMORY and IMPORT FROM MEMORY statements allow you to write data to, or read data from, the ABAP memory.

check these links

http://www.saptechies.com/what-is-the-difference-between-sap-memory-and-abap-memory-2/

http://help.sap.com/saphelp_nw2004s/helpdata/en/fc/eb3bc4358411d1829f0000e829fbfe/content.htm

Reward all helpfull answers

Regards

Pavan

Re: memory

Former Member — Fri, 06 Jul 2007 10:41:22 GMT

Hi vennila,

Difference Between SAP and ABAP Memory

Can any one tell me what is the difference between ABAP Memory and SAP Memory?

Answers 1:-

Within a main session, when ever you start an application program, it opens up an internal sessions with in the main session. The internal session has a memory area that contains the ABAP program and its associated data. So when ever you want to pass data between two internal sessions, then you can use ABAP Memory (i.e import, export).

When comes to SAP memory (also known as global memory), if the data has to be passed b/w two main sessions, we can use SAP Memory(SPA/GPA Parameters). SAP Memory can also be used to pass data b/w internal sessions.

Neelima

Answers 2:-

SAP Memory

ABAP/4 Memory

SAP memory

ABAP/4 memory

if useful reward points.

Yhanks

Sanket.

Re: memory

Former Member — Fri, 06 Jul 2007 10:43:14 GMT

SAP Memory

ABAP/4 Memory

Re: memory

Former Member — Fri, 06 Jul 2007 10:52:36 GMT

Hi,

In the Overview of the R/3 Basis System you have seen that each user can open up to six R/3 windows in a single SAPgui session. Each of these windows corresponds to a session on the application server with its own area of shared memory.

The first application program that you start in a session opens an internal session within the main session. The internal session has a memory area that contains the ABAP program and its associated data. When the program calls external routines (methods, subroutines or function modules) their main program and working data are also loaded into the memory area of the internal session.

Only one internal session is ever active. If the active application program calls a further application program, the system opens another internal session. Here, there are two possible cases: If the second program does not return control to the calling program when it has finished running, the called program replaces the calling program in the internal session. The contents of the memory of the calling program are deleted. If the second program does return control to the calling program when it has finished running, the session of the called program is not deleted. Instead, it becomes inactive, and its memory contents are placed on a stack.

The memory area of each session contains an area called ABAP memory. ABAP memory is available to all internal sessions. ABAP programs can use the EXPORT and IMPORT statements to access it. Data within this area remains intact during a whole sequence of program calls. To pass data to a program which you are calling, the data needs to be placed in ABAP memory before the call is made. The internal session of the called program then replaces that of the calling program. The program called can then read from the ABAP memory. If control is then returned to the program which made the initial call, the same process operates in reverse.

All ABAP programs can also access the SAP memory. This is a memory area to which all sessions within a SAPgui have access. You can use SAP memory either to pass data from one program to another within a session, or to pass data from one session to another. Application programs that use SAP memory must do so using SPA/GPA parameters (also known as SET/GET parameters). These parameters are often used to preassign values to input fields. You can set them individually for users, or globally according to the flow of an application program. SAP memory is the only connection between the different sessions within a SAPgui.

an ABAP program is active in the second internal session of the first main session. It can access the memory of its own internal session, ABAP memory and SAP memory. The program in the first internal session has called the program which is currently active, and its own data is currently inactive on the stack. If the program currently active calls another program but will itself carry on once that program has finished running, the new program will be activated in a third internal session.

Regards,

Omkar.

Re: memory

Former Member — Fri, 06 Jul 2007 11:15:41 GMT

answered