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Wednesday 8 June 2011

What is the difference between dynamic and static parameter

This article answers following queries :

  • What is a SAP parameter?
  • Different types of SAP Parameters?
  • How to identify whether a parameter is dynamic or static ?

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In SAP, parameters are used to set the configuration and define the functionality of an sap system like number of workprocesses, buffer size, locktable size etc.

Basically there are 2 types of parameters :

  • Static
  • Dynamic
Static are the parameters those won't take effect immediately the value is set. Restart of an sap system is required for them to take effect.

Dynamic are the parameters those will take effect immediately in the run time. Restart of an sap system is not required for them to take effect.

Parameter can be differentiated whether it is dynamic or static by checking in RZ11 transaction of SAP.









 In Rz11, type the parameter and display it. In the screen , there will be a check box with description as "Dynamically switchable". If that check box is ticked, it means that it is dynamic parameter and value can changed in run time without restart of the system. If it is not ticked, then it is static parameter and it needs restart of a sap system for the changes to take effect. 

 In latest version SAP systems also, we can verify this through RZ11 tcode. Output might be bit different as shown below :



at

26 comments:

  1. ravi22 November 2012 at 18:50

    Hi Durga,

    Can we change Dynamic parameter value using Tcode RZ11?

    Thanks
    Ravi

    ReplyDelete
  2. DurgaPrasad22 November 2012 at 18:55

    Hi Ravi,

    Yes. Dynamic parameter value can be changed using RZ11 tcode.

    ReplyDelete
  3. Anonymous7 December 2012 at 04:34

    Hi Durga,
    I can not change values in rz11 . It has only display button.
    Thanks

    ReplyDelete
    Replies
    1. DurgaPrasad19 June 2013 at 18:59

      Hi Frnd, You can only change dynamic parameters through Rz11. If it is static parameter, you have to change it through Rz10 profiles.

      We can check a parameter is dynamic or static in Rz11. If "Dynamically switchable" checkbox is ticked in Rz11 then that parameter is Dynamic otherwise it is static.

      Delete
  4. damodar15 February 2013 at 15:15

    May be the parameter you have selected is static parameter.

    So, to change static parameter value go to RZ10.

    ReplyDelete
  5. Anonymous27 March 2013 at 11:36

    Hi Durga,
    can you please tell me some dynamic parameters. becoz
    i have checked in rz11.........>display....>dynamic swithcable check box......>but i did not find any dynamic parameter yet..mostly static parameters are there...
    thanks&regards
    vijay

    ReplyDelete
    Replies
    1. Anonymous27 May 2013 at 11:13

      rdisp/max_wprun_time is dynamic parameter..

      Delete
    2. DurgaPrasad19 June 2013 at 18:56

      Please find below some dynamic parameters:

      rdisp/max_wprun_time
      rdisp/TRACE
      rdisp/gui_auto_logout
      rdisp/j2ee_start
      rdisp/keepalive
      rdisp/max_priv_time
      rdisp/max_alt_modes
      rdisp/wppriv_max_no

      Delete
  6. DurgaPrasad19 June 2013 at 18:56

    ThanQ

    ReplyDelete
  7. Anonymous30 July 2013 at 13:22

    can u post some of static parameters

    ReplyDelete
  8. Unknown22 November 2013 at 13:16

    hi sir i cant able access any tcode to a user its displaying not autorised to use tcode

    ReplyDelete
  9. Dev B.23 November 2013 at 22:38

    Guess the user you using don't have roles assigned for the corresponding Tcodes you are trying.
    Go to SUIM & compare the user roles with a well working user profile & assign all the missing roles through SU01.

    ReplyDelete
  10. Dev B.23 November 2013 at 22:42

    Static Parameters:
    rdisp/wp_no_dia
    rdisp/wp_no_btc
    rdisp/wp_no_vb
    rdisp/wp_no_vb2
    rdisp/wp_no_enq
    rdisp/wp_no_spo

    ReplyDelete
  11. Shahin12 May 2014 at 17:01

    hi,
    table TPFYPROPTY contains all dynamic switchable system parameters

    regards,
    Shahin

    ReplyDelete
  12. Anonymous2 December 2014 at 16:57

    super blog

    ReplyDelete
  13. Unknown10 January 2015 at 15:21

    Hi Durga,

    I understand we can change,

    Static parameters via RZ10
    Dynamic parameters via RZ11.

    But If we change a dynamic parameter, and if sometime later the SAP system is restarted...will the changed dynamic parameter remain same in the system ? or do we need to make changes again ?

    I believe dynamic parameter changes remain reflected as long as the system is up and running.
    Kindly enlighten me.

    #Your blog is super awesome. Amazing !

    ReplyDelete
    Replies
    1. DreamEvent23 November 2015 at 22:16

      Akash, the change wont remain the same with Dynamic Parameter, you need to make the changes again...

      Delete
    2. Unknown23 August 2018 at 20:54

      How to distinguish between static ad dymanic parameters of an abap system??any fm or tables we cn depend?or os level cn we know??

      Delete
  14. Unknown13 August 2015 at 14:36

    Hello Durga,

    Your document is very useful for me, can you send me system refresh and system copy concept.

    ReplyDelete
  15. Unknown4 September 2015 at 02:01

    Hi Durga

    can u please tell me aboutnumber of workprocesses, buffer size, locktable size ?

    ReplyDelete
  16. Unknown1 December 2015 at 11:41

    very nice!thanks...........

    ReplyDelete
  17. Unknown26 December 2015 at 15:24

    Really Superb information. Thank you so much Durga Sir.

    ReplyDelete
  18. Anonymous9 May 2018 at 02:55

    in 2018 we still learn thanks to you Durga!

    ReplyDelete
  19. Unknown23 August 2018 at 20:50

    How can we distinguish between static ad dymanic parameters of an abap system??any fm or tables we cn depend?or os level cn we know??

    ReplyDelete
  20. Anonymous17 December 2018 at 18:42

    from which tcode we can check the changed parameter?

    ReplyDelete
    Replies
    1. Unknown27 April 2019 at 10:38

      Recent changes in parameter can be checked using TU02 tcode.

      Delete

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