What is a  Logical and Physical file path in sap?

what is a  Logical and Physical file path in sap?

Hi,
Physical file is what you see from the OS level.
Logical file is what ABAP code can call certain functions to read/write.
Transaction FILE would link them together. Typically the logical path ends with "<FILENAME>", and the logical file refers to the logical path.
To extract the physical path from the logical path name
DATA: lf_mandt TYPE sy-mandt,
        lf_opsys TYPE sy-opsys.
  lf_mandt = sy-mandt.
  lf_opsys = sy-opsys.
To extract the physical path from the logical path name
  CALL FUNCTION 'FILE_GET_NAME'
    EXPORTING
      client           = lf_mandt
      logical_filename = p_unix
      operating_system = lf_opsys
    IMPORTING
      file_name        = gwa_input
    EXCEPTIONS
      file_not_found   = 1
      OTHERS           = 2.
  IF sy-subrc EQ 0.
  Concatenating the physical path and the input unix file name
    CONCATENATE gwa_input p_file INTO gf_file .
  ENDIF.
Reward if helpful.
Regards,
Ramya

Similar Messages

  • Logical and physical file paths

    Hi,
    can anyone elobrate me  on what are logical and physical file
    paths ?

    hi,
    Follow this link
    http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3deb358411d1829f0000e829fbfe/frameset.htm
    File format determination (Required / optional fields and field checks).
    Logical File Path configuration through transaction 'FILE'. A new physical file path should be created on operating system level or an existing one can be used if agreed. The Basis team member should create a new file path at operating system level, if required.
    Hope this helps, Do reward.

  • Diff between logical and physical file path

    Hi ,
    Could you please explain difference between logical and physical file path's and their importance in ABAP.
    Thanks and regards,
    shyla

    Hi
    The function module FILE_GET_NAME convert a logical path into its corresponding physical path.
    The advantage of using logical pathes within your applications is obivous:
    If you need to change the physical path you just adjust it within transaction FILE yet no changes are required to your application.
    http://help.sap.com/saphelp_erp2005vp/helpdata/en/25/ab3a57df3b11d189fc0000e829fbbd/frameset.htm
    The file names that you use in ABAP statements for processing files are physical names. This means that they must be syntactically correct filenames for the operating system under which your R/3 System is running. Once you have created a file from an ABAP program with a particular name and path, you can find the same file using the same name and path at operating system level.
    Since the naming conventions for files and paths differ from operating system to operating system, ABAP programs are only portable from one operating system to another if you use the tools described below.
    To make programs portable, the R/3 System has a concept of logical filenames and paths. These are linked to physical files and paths. The links are created in special tables, which you can maintain according to your own requirements. In an ABAP program, you can then use the function module FILE_GET_NAME to generate a physical filename from a logical one.
    Maintaining platform-independent filenames is part of Customizing. For a full description, choose Tools ® Business Engineer ® Customizing, followed by
    Implement. projects ® SAP Reference IMG. On the next screen, choose Basis Components System Administration ® Platform-independent File Names.
    For a more detailed description of the function module FILE_GET_NAME, enter its name on the initial screen of the Function Builder and choose Goto Documentation. On the next screen, choose Function module doc.
    Another way of maintaining platform-independent filenames is to use the Transaction FILE. The following sections provide an overview of the transaction.
    To create a logical filename, choose Logical filename definition, client-independent from the Navigation group box in Transaction FILE, then choose New entries. You define logical filenames
    You can either define a logical filename and link it to a logical path (as displayed here), or you can enter the full physical filename in the Physical file field. In the latter case, the logical filename is only valid for one operating system. The rules for entering the complete physical filename are the same as for the definition of the physical path for the logical file. To display further information and a list of reserved words, choose Help.
    If you link a logical path to a logical file, the logical file is valid for all syntax groups that have been maintained for that logical path. The filename specified under Physical file replaces the reserved word  in the physical paths that are assigned to the logical path. To make the name independent of the operating system, use names that begin with a letter, contain up to 8 letters, and do not contain special characters.
    Save your changes.

  • Difference between logical file path and physical file path

    Hi,
    Can anyone tell me why logical file path is required and why physical file path is required? What exactly is the difference bet them?
    Thanks in advance.
    Regards,
    PS.

    Hi,
    The function module FILE_GET_NAME convert a logical path into its corresponding physical path.
    The advantage of using logical pathes within your applications is obivous:
    If you need to change the physical path you just adjust it within transaction FILE yet no changes are required to your application.
    http://help.sap.com/saphelp_erp2005vp/helpdata/en/25/ab3a57df3b11d189fc0000e829fbbd/frameset.htm
    The file names that you use in ABAP statements for processing files are physical names. This means that they must be syntactically correct filenames for the operating system under which your R/3 System is running. Once you have created a file from an ABAP program with a particular name and path, you can find the same file using the same name and path at operating system level.
    Since the naming conventions for files and paths differ from operating system to operating system, ABAP programs are only portable from one operating system to another if you use the tools described below.
    To make programs portable, the R/3 System has a concept of logical filenames and paths. These are linked to physical files and paths. The links are created in special tables, which you can maintain according to your own requirements. In an ABAP program, you can then use the function module FILE_GET_NAME to generate a physical filename from a logical one.
    Maintaining platform-independent filenames is part of Customizing. For a full description, choose Tools ® Business Engineer ® Customizing, followed by
    Implement. projects ® SAP Reference IMG. On the next screen, choose Basis Components System Administration ® Platform-independent File Names.
    For a more detailed description of the function module FILE_GET_NAME, enter its name on the initial screen of the Function Builder and choose Goto Documentation. On the next screen, choose Function module doc.
    Another way of maintaining platform-independent filenames is to use the Transaction FILE. The following sections provide an overview of the transaction.
    To create a logical filename, choose Logical filename definition, client-independent from the Navigation group box in Transaction FILE, then choose New entries. You define logical filenames
    You can either define a logical filename and link it to a logical path (as displayed here), or you can enter the full physical filename in the Physical file field. In the latter case, the logical filename is only valid for one operating system. The rules for entering the complete physical filename are the same as for the definition of the physical path for the logical file. To display further information and a list of reserved words, choose Help.
    If you link a logical path to a logical file, the logical file is valid for all syntax groups that have been maintained for that logical path. The filename specified under Physical file replaces the reserved word  in the physical paths that are assigned to the logical path. To make the name independent of the operating system, use names that begin with a letter, contain up to 8 letters, and do not contain special characters.
    Save your changes.
    regards,
    Omkar.

  • Information about file Id, Logical file name and Physical file name

    Hi All,
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    Thanks
    Puneet Aggarwal

    hi,
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    Thanks,
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  • Logical file names and Physical file names

    Hi Guys...
         Can you let me know what is the difference between Logical file names and Physical file names?
    Regards,
    Rohit

    Using Logical Files in ABAP Programs http://help.sap.com/saphelp_nw04/helpdata/en/9f/db95e635c111d1829f0000e829fbfe/content.htm
    Creating and Defining Logical Filenames
    http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3df8358411d1829f0000e829fbfe/content.htm

  • Logical & Physical File path

    Hi Gyes,
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    Thanks and regards,
      Suresh.

    hello,
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    CLIENT                          200
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    OPERATING_SYSTEM                WINDOWS NT
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    PARAMETER_2
    PARAMETER_3
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    USE_BUFFER
    ELEMINATE_BLANKS                X
    Reward points if helps.
    Thanks,
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    I think it is not possible. becuase the date & time added at runtime. so if you check the table  PATH you can find filename and their definitions
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    Can you please share the piece of code ?
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    Hi All,
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    Regards,
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        open dataset sfile for output in text mode encoding default.
    A.

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