Size of program buffer sap

Mauricio Grisa. November 19, Less than a 1 minute read. The most problematic buffers are listed below: Nametab buffers: it is recommended that you check SAP Notes and I can tell youit is normal that a lot of nametab entries are required during SGEN.

It is recommended that you check SAP Notes and Program buffer: it is recommended that you check SAP Notes and Alert Moderator. Alerting is not available for unauthorized users. Assigned Tags. Similar Blog Posts. Related Questions. You must be Logged on to comment or reply to a post. Nilesh Vangujar. Increase the size of the program buffer if the hit rate becomes too low, or the swaps become too frequent.

Development systems require a larger program buffer than normal systems. It is, however, almost impossible to avoid swapping in a development system. If undesired side effects occur after increasing the size of the SAP buffer, monitor the operating system paging for significant increase and the SAP Memory Management subtree in the Entire Systemmonitor for new alerts. Procedure if Hit Rate Is Too Low Hit rate alerts indicate that bad buffer performance is damaging the performance of the application server.

Note With the exception of the SingleRecord buffer, the hit rate for buffers should always be above 95 percent if the buffers are large enough. Program R3BufferProgram. Compiled SAP programs. Generic keys. Wholly or partly buffered database tables. Single record buffer. Individual records from utilized database tables. Screen R3BufferScreen.

Dynpro buffer Presentation buffer. Screen pages from ABAP programs. Menu buffer. Unless you understand the root cause and impact of your handling it is therefore difficult to give an ultimate answer to what you should do. Is it safe to reset buffers? Example: Buffered Number Ranges Worst case scenario you could get a "hole" in your number range. This might seem harmless from a technical perspective - and often is, but in rare cases it could lead to legal issues.

If it is safe to reset a buffer or not would therefore depend on what the buffer is used for, as well as how SAP and the applications handle these Decision to reset or not Performance impact might be an acceptable alternative rather than a restart of the system, though a controlled restart of the system would be safer way to deal with issues.

However, restarting a system with 24x7 could be unacceptable as well After this, pxanew replaces pxastat. Additionally, you could also preload a fixed amount of programs. To use this feature, you must create a file called pxauserload in the work directory. For details, check SAP Note and ABAP Development. Browse pages.