How To Fix HH044 - Database buffer read quality could be better (buffers too small?)


SAP Error Message - Details

  • Message type: E = Error

  • Message class: HH - (Long) text for check tool 'infcfgcheck'

  • Message number: 044

  • Message text: Database buffer read quality could be better (buffers too small?)

  • Show details Hide details
  • What causes this issue?

    This is a single 'performance' check and therefore does not
    describe a critical system status. It is neither necessary nor
    time-critical to perform the steps described below, but they could
    help improve the overall performance of your R/3 System.

    The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

    The 'hit rate' of pages in the database buffer in percent is not
    optimal
    for read accesses. A rate of at least 95% is considered to be
    optimal. A better 'hit rate' can often be obtained by extending
    the database buffer (thus reducing the 'displacement rate' of pages in
    the buffer). On the other hand, the ONCONFIG parameter 'BUFFERS' should
    not be increased if this is not necessary in order to keep the
    use of Shared Memory (i.e. main memory) within reason.

    System Response

    How to fix this error?

    Check the read quality of the database buffer regularly with
    'onstat -p'. If the percent value is constantly below 95%, try
    increasing the ONCONFIG paramter 'BUFFERS'. You can assume 20% of the
    physical memory as a approximate value for the buffer size.
    As user 'informix', edit file
    '$INFORMIXDIR/etc/$ONCONFIG' ('BUFFERS' = number of pages).
    CAUTION: The change will only become active when the database has
    been started up.
    Please also refer to Note 38307.

    Error message extract from SAP system. Copyright SAP SE.


Smart SAP Assistant

  • What is the cause and solution for SAP error message HH044 - Database buffer read quality could be better (buffers too small?) ?
    The SAP error message HH044, which states "Database buffer read quality could be better (buffers too small?)", indicates that the performance of the database buffer is not optimal. This can lead to inefficiencies in data retrieval and overall system performance. Here’s a breakdown of the cause, potential solutions, and related information:
    
    Cause: Insufficient Buffer Size: The database buffer may be too small to hold the frequently accessed data, leading to increased disk I/O operations. High Data Volume: If the volume of data being processed exceeds the capacity of the buffer, it can lead to performance degradation. Inefficient Buffer Management: Poorly configured buffer management settings can also contribute to this issue. Increased Workload: A sudden increase in workload or user activity can strain the existing buffer settings.
    Solution: Increase Buffer Size: Review and adjust the size of the database buffer. This can typically be done in the database configuration settings. For SAP systems, you can adjust the parameters in the

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