How To Fix RZ450 - Short nametab buffer alert

SAP Error Message - Details

• Message type: E = Error

• Message class: RZ - Messages for Computing Center Management System

• Message number: 450

• Message text: Short nametab buffer alert

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RZ450 - Short nametab buffer alert ?

  The SAP error message RZ450, which indicates a "Short nametab buffer alert," typically arises when the short name table (nametab) buffer in the SAP system is nearing its capacity. This buffer is used to store short names for various objects, and when it becomes full, it can lead to performance issues or errors in the system.
  Cause:
  
  Buffer Size Limit: The short nametab buffer has a predefined size limit. When the number of entries exceeds this limit, the system generates the RZ450 alert.
  High Usage of Short Names: If there are many objects in the system that utilize short names, this can quickly fill up the buffer.
  Configuration Issues: Sometimes, the buffer size may not be configured optimally for the specific needs of the system.
  
  Solution:
  
  
  Increase Buffer Size:
  
  You can increase the size of the short nametab buffer. This is done by adjusting the profile parameters in the SAP system.
  The relevant parameter is rdisp/short_name_tab_size. You can increase this value to allow for more entries in the buffer.
  After making changes, you will need to restart the SAP instance for the changes to take effect.
  
  
  
  Monitor Usage:
  
  Regularly monitor the usage of the short nametab buffer to ensure it does not reach critical levels again.
  Use transaction code RZ20 or RZ21 to set up monitoring alerts for the buffer usage.
  
  
  
  Clean Up Unused Entries:
  
  If there are obsolete or unused short names, consider cleaning them up to free up space in the buffer.
  
  
  
  Review Custom Developments:
  
  If there are custom developments or third-party applications that create a large number of short names, review them to see if optimizations can be made.
  
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like RZ10 (to change profile parameters) and RZ11 (to display and change profile parameters) to manage system parameters.
  SAP Notes: Check for relevant SAP Notes that may provide additional guidance or patches related to this issue.
  Documentation: Refer to the SAP Basis documentation for more details on buffer management and performance tuning.
  
  By addressing the short nametab buffer alert proactively, you can help maintain system performance and avoid potential disruptions in your SAP environment.